Document And Entity Information - USD ($)	12 Months Ended
Document And Entity Information - USD ($)	Dec. 31, 2016	Feb. 08, 2017	Jun. 26, 2016
Document Information [Line Items]
Entity Registrant Name	Ultralife Corp
Entity Central Index Key	0000875657
Trading Symbol	ulbi
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		15,363,658
Entity Public Float			$ 46,435,667
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash	$ 10,629	$ 14,393
Restricted Cash	77	140
Trade Accounts Receivable, Net of Allowance for Doubtful Accounts of $277 and $300, Respectively	13,179	11,430
Inventories, Net	23,456	23,814
Prepaid Expenses and Other Current Assets	2,079	1,900
Due from Insurance Company	0	177
Deferred Income Taxes	94	92
Total Current Assets	49,514	51,946
Property, Equipment and Improvements, Net	7,999	9,038
Goodwill	19,965	16,283
Other Intangible Assets, Net	7,194	3,946
Security Deposits and Other Non-Current Assets	72	309
Total Assets	84,744	81,522
Current Liabilities:
Accounts Payable	7,292	6,494
Accrued Compensation and Related Benefits	1,258	2,377
Accrued Expenses and Other Current Liabilities	2,606	1,749
Income Taxes Payable	172	227
Total Current Liabilities	11,328	10,847
Deferred Income Taxes	5,538	4,631
Other Non-Current Liabilities	18	28
Total Liabilities	16,884	15,506
Commitments and Contingencies (Note 7)
Shareholders' Equity:
Preferred Stock – Par Value $.10 Per Share; Authorized 1,000,000 Shares; None Issued
Common Stock – Par Value $.10 Per Share; Authorized 40,000,000 Shares; Issued – 19,324,723 Shares and 19,181,815 Shares, Respectively; Outstanding – 15,308,971 Shares and 15,322,155 Shares, Respectively	1,932	1,918
Capital in Excess of Par Value	178,163	177,007
Accumulated Deficit	(90,542)	(94,051)
Accumulated Other Comprehensive Loss	(3,080)	(907)
Treasury Stock - at Cost; 4,015,752 Shares and 3,859,660 Shares at December 31, 2016 and 2015, Respectively	(18,443)	(17,808)
Total Ultralife Corporation Equity	68,030	66,159
Non-Controlling Interest	(170)	(143)
Total Shareholders’ Equity	67,860	66,016
Total Liabilities and Shareholders' Equity	$ 84,744	$ 81,522

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Trade accounts receivable, allowance for doubtful accounts	$ 277	$ 300
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	19,324,723	19,181,815
Common stock, shares outstanding (in shares)	15,308,971	15,322,155
Treasury stock, shares (in shares)	4,015,752	3,859,660

Consolidated Statements of Income and Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Revenues	$ 82,460,000	$ 76,427,000
Cost of Products Sold	57,352,000	53,111,000
Gross Profit	25,108,000	23,316,000
Operating Expenses:
Research and Development	5,946,000	5,603,000
Selling, General and Administrative	15,399,000	14,233,000
Intangible Asset Impairment	0	150,000
Total Operating Expenses	21,345,000	19,986,000
Operating Income	3,763,000	3,330,000
Other (Expense) Income:
Interest Income	0	3,000
Interest and Financing Expense	(263,000)	(248,000)
Miscellaneous	80,000	65,000
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	3,580,000	3,150,000
Income Tax Provision	98,000	310,000
Net income	3,482,000	2,840,000
Net Loss Attributable to Non-Controlling Interest	27,000	29,000
Net Income Attributable to Ultralife Corporation	3,509,000	2,869,000
Other Comprehensive Loss:
Foreign Currency Translation Adjustments	(2,173,000)	(440,000)
Comprehensive Income Attributable to Ultralife Corporation	$ 1,336,000	$ 2,429,000
Net Income Per Share Attributable to Ultralife Corporation Common Shareholders – Basic: (in dollars per share)	$ 0.23	$ 0.18
Net Income Per Share Attributable to Ultralife Corporation Common Shareholders – Diluted: (in dollars per share)	$ 0.23	$ 0.17
Weighted Average Shares Outstanding – Basic (in shares)	15,261	16,182
Weighted Average Shares Outstanding – Diluted (in shares)	15,405	16,458

Consolidated Statements of Changes in Stockholders Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2014	18,941,544
Balance at Dec. 31, 2014	$ 1,894	$ 175,940	$ (467)	$ (96,920)	$ (8,420)	$ (114)	$ 71,913
Purchases of Stock					(9,388)		(9,388)
Vesting of Restricted Shares (in shares)	102,334
Vesting of Restricted Shares	$ 10	(28)					$ (18)
Stock Option Exercises (in shares)	137,937						137,937
Stock Option Exercises	$ 14	524					$ 538
Stock-Based Compensation - Stock Options		489					489
Stock-Based Compensation - Restricted Stock		82					82
Foreign Currency Translation Adjustments			(440)				(440)
Net Income				2,869		(29)	$ 2,840
Balance (in shares) at Dec. 31, 2015	19,181,815						19,181,815
Balance at Dec. 31, 2015	$ 1,918	177,007	(907)	(94,051)	(17,808)	(143)	$ 66,016
Purchases of Stock					(635)		$ (635)
Vesting of Restricted Shares (in shares)	15,900
Vesting of Restricted Shares	$ 2	(2)
Stock Option Exercises (in shares)	127,008						152,789
Stock Option Exercises	$ 12	448					$ 460
Stock-Based Compensation - Stock Options		676					676
Stock-Based Compensation - Restricted Stock		34					34
Foreign Currency Translation Adjustments			(2,173)				(2,173)
Net Income				3,509		(27)	$ 3,482
Balance (in shares) at Dec. 31, 2016	19,324,723						19,324,723
Balance at Dec. 31, 2016	$ 1,932	$ 178,163	$ (3,080)	$ (90,542)	$ (18,443)	$ (170)	$ 67,860

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
Consolidated Statements of Cash Flows - USD ($)	Dec. 31, 2016	Dec. 31, 2015
OPERATING ACTIVITIES:
Net Income	$ 3,482,000	$ 2,840,000
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation	2,223,000	2,401,000
Amortization of Intangible Assets	503,000	235,000
Amortization of Financing Fees	71,000	71,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0	150,000
Stock-Based Compensation	710,000	571,000
Loss on Long-Lived Asset Disposals	29,000	114,000
Deferred Income Tax Expense	135,000	183,000
Provision for allowance for doubtful accounts	(24,000)	(22,000)
Changes in operating assets and liabilities:
Accounts Receivable	(667,000)	(217,000)
Inventories	1,981,000	2,101,000
Prepaid Expenses and Other Assets	730,000	(757,000)
Income taxes receivable and payable	(158,000)	158,000
Accounts Payable and Other Liabilities	(1,362,000)	723,000
Net Cash Provided by Operating Activities	7,653,000	8,551,000
INVESTING ACTIVITIES:
Acquisition of Accutronics, Net of Cash Acquired	(9,857,000)	0
Cash Paid for Property, Equipment and Improvements	(1,219,000)	(2,910,000)
Change in Restricted Cash	65,000	0
Net Cash Used in Investing Activities	(11,011,000)	(2,910,000)
FINANCING ACTIVITIES:
Cash Paid to Repurchase Treasury Stock	(607,000)	(9,388,000)
Proceeds from Debt Borrowings	3,030,000
Payments of Debt Borrowings	(3,030,000)
Proceeds from Exercise of Stock Options	460,000	538,000
Tax Withholdings on Stock-Based Awards	(28,000)	(18,000)
Net Cash Used in Financing Activities	(175,000)	(8,868,000)
Effect of Exchange Rate Changes on Cash	(231,000)	(91,000)
DECREASE IN CASH	(3,764,000)	(3,318,000)
Cash, Beginning of Year	14,393,000	17,711,000
Cash, End of Year	10,629,000	14,393,000
Supplemental Cash Flow Information:
Construction in Process in Accounts Payable	83,000
Income Taxes Paid	273,000	52,000
Interest Paid	$ 179,000	$ 150,000

Note 1 - Summary of Operations and Significant Accounting Policies

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Business Description and Accounting Policies [Text Block]

Note

- Summary of Operations and Significant Accounting Policies

Description of Business

As used in this annual report, unless otherwise indicated, the terms “we”, “our” and “us” refer to Ultralife Corporation (“Ultralife”) and includes our wholly-owned subsidiaries, ABLE New Energy Co., Limited and its wholly-owned subsidiary ABLE New Energy Co.; Ltd; Ultralife UK LTD and its wholly-owned subsidiary, Accutronics Ltd; Ultralife Batteries (UK) Ltd.; and our majority-owned joint venture Ultralife Batteries India Private Limited.

We offer products and services ranging from power solutions to communications and electronics systems. Through our engineering and collaborative approach to problem solving, we serve government, defense and commercial customers across the globe. We design, manufacture, install and maintain power and communications systems including: rechargeable and non-rechargeable batteries, charging systems, communications and electronics systems and accessories, and custom engineered systems. We sell our products worldwide through a variety of trade channels, including original equipment manufacturers (“OEMs”), industrial and defense supply distributors, and directly to U.S. and international defense departments.

b.	Principles of Consolidation

The consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and include the accounts of Ultralife Corporation, our wholly-owned subsidiaries, Ultralife Batteries (UK) Ltd., Ultralife UK LTD, and its wholly-owned subsidiary Accutronics Ltd, ABLE New Energy Co., Limited, and its wholly-owned subsidiary ABLE New Energy Co., Ltd. (“ABLE” collectively), and our majority-owned subsidiary Ultralife Batteries India Private Limited (“India JV”). Intercompany accounts and transactions have been eliminated in consolidation.

c.	Management's Use of Judgment and Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at year end and the reported amounts of revenues and expenses during the reporting period. Key areas affected by estimates include: (a) carrying value of goodwill and intangible assets; (b) reserves for deferred tax assets, excess and obsolete inventory, warranties, and bad debts; (c) valuation of assets acquired and liabilities assumed in business combinations; (d) various expense accruals; and (e) stock-based compensation. Our actual results could differ from these estimates.

d.	Reclassifications

Certain items previously reported in specific financial statement captions are reclassified to conform to the current presentation. There were no material reclassifications for the years ended

December

31,

2016

and

2015.

Cash

Our cash balances

may

at times exceed federally insured limits. We have not experienced any losses in these accounts and believe we are not exposed to any significant risk with respect to cash.

f.	Accounts Receivable and Allowance for Doubtful Accounts

We extend credit to our customers in the normal course of business. We perform ongoing credit evaluations and generally do not require collateral. Trade accounts receivable are recorded at their invoiced amounts, net of allowance for doubtful accounts. We evaluate the adequacy of our allowance for doubtful accounts quarterly. Accounts outstanding longer than contractual payment terms are considered past due and are reviewed individually for collectability. We maintain reserves for potential credit losses based upon our loss history and specific receivables aging analysis. Receivable balances are written off when collection is deemed unlikely. Allowance for doubtful accounts was

$277

and

$300

for the years ended

December

31,

2016

and

2015,

respectively.

Inventories

Inventories are stated at the lower of cost or market with cost determined under the

first

-in,

first

-out (FIFO) method. We record provisions for excess, obsolete or slow-moving inventory based on changes in customer demand, technology developments or other economic factors.

h.	Property, Plant and Equipment

Property, plant and equipment are stated at cost. Depreciation and amortization are computed using the straight-line method over the estimated useful lives. Estimated useful lives are as follows:

Buildings (years)	10	–	20
Machinery and Equipment (years)	5	–	10
Furniture and Fixtures (years)	3	–	10
Computer Hardware and Software (years)	3	–	5
Leasehold Improvements	Lesser of useful life or lease term

Betterments, renewals and extraordinary repairs that extend the life of the assets are capitalized. Other repairs and maintenance costs are expensed when incurred. When disposed, the cost and accumulated depreciation applicable to assets retired are removed from the accounts and the gain or loss on disposition is recognized in operating income.

i.	Long-Lived Assets, Goodwill and Intangibles

We assess all of our long-lived assets for impairment when events or circumstances indicate that their carrying amounts

may

not be recoverable. For property, plant and equipment and amortizable intangible assets, this is accomplished by comparing the expected undiscounted future cash flows of the assets with the respective carrying amount as of the date of assessment. Should aggregate future cash flows be less than the carrying value, a write-down would be required, measured as the difference between the carrying value and the fair value of the asset. Fair value is estimated as the present value of expected discounted future cash flows. The discount rate used by us in our evaluation is an industry-based weighted average cost of capital. If the expected undiscounted future cash flows exceed the respective carrying amount as of the date of assessment, no impairment is recognized. We did

not

record any impairments of property, plant and equipment or amortizable intangible assets in the years ended

December

31,

2016

2015.

We do not amortize goodwill and intangible assets with indefinite lives, but instead measure these assets for impairment as of

December

31,

and on an interim basis when events or circumstances indicate that impairment

may

exist. We amortize intangible assets that have definite lives so that the economic benefits of the intangible assets are being recognized as expense over their weighted-average estimated useful lives.

The impairment analysis of goodwill consists

first

of a review of various qualitative factors of the identified reporting units to determine whether it is more likely than not that the fair value of a reporting unit exceeds its carrying amount, including goodwill. This review includes, but is not limited to, an evaluation of the macroeconomic, industry or market, and cost factors relevant to the reporting unit as well as financial performance and entity or reporting unit events that

may

affect the value of the reporting unit. If this review leads to the determination that it is more likely than not that the fair value of the reporting unit is greater than its carrying amount, further impairment testing is not required. However, if this review cannot support such a conclusion or we determine to do so at our discretion, we will perform quantitative impairment steps. Similarly, the analysis for indefinite-lived intangible assets consists of review of various qualitative factors to determine if it is more likely than not that the indefinite-lived intangible asset is not impaired. If such a conclusion cannot be supported or at our discretion, we will perform quantitative impairment steps.

The quantitative impairment test for goodwill consists of a comparison of the fair value of the reporting unit with the carrying amount of the reporting unit to which it is assigned.

If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. If the carrying amount of a reporting unit exceeds its fair value, a

second

step of the goodwill impairment test is performed to measure the amount of impairment loss, if any. The impairment test for intangible assets with indefinite lives consists of a comparison of the fair value of the intangible assets with their carrying amounts. If the carrying value of the intangible assets exceeds the fair value, an impairment loss is recognized in an amount equal to that excess. We determine the fair value of the reporting unit for goodwill impairment testing based on a discounted cash flow model. We determine the fair value of our intangibles assets with indefinite lives (trademarks) through the relief from royalty valuation approach.

impairments of long-lived intangible assets were recorded in the year ended

December

31,

2016.

While our testing indicated that the McDowell Research Corporation trademark is not impaired in

2016,

it passed by a relatively narrow margin and is most susceptible to variances in sales from current projections. Due to time delays in the awarding by government/defense customers in recent years of certain large projects in our Communications Systems segment, we recorded a partial impairment of our McDowell Research, Ltd. trademark in the year ended

December

31,

2015.

This impairment amounted to

$150.

Future amortization expense of amortizable intangible assets will be approximately

$405,

$373,

$352,

$340

and

$321

for the fiscal years ending

December

31,

2017

through

2021,

respectively.

j.	Translation of Foreign Currency

The financial statements of our foreign subsidiaries are translated from the functional currency into U.S. dollar equivalents, with translation adjustments recorded as the sole component of accumulated other comprehensive loss on the balance sheets. Exchange gains and (losses) relate to foreign currency transactions and balances denominated in currencies other than the functional currency included in net income for the years ended

December

31,

2016

and

2015

were

$86

and

$48,

respectively.

k .	Revenue Recognition

Product Sales – In general, revenues from the sale of products are recognized when products are shipped. When products are shipped with terms that require transfer of title upon delivery at a customer’s location, revenues are recognized on the date of delivery. We will make a provision at the time the revenue is recognized for warranty costs expected to be incurred. Customers, including distributors, do not have a general right of return on products shipped.

Deferred Revenue

–

For each source of revenues, we defer recognition if: (i) evidence of an agreement does not exist,( ii) delivery or service has not occurred, (iii) the selling price is not fixed or determinable, or (iv) collectability is not reasonably assured.

l.	Warranty Reserves

We estimate future costs associated with expected product failure rates, material usage and service costs in the development of our warranty obligations. Warranty reserves, included in other current liabilities and other long-term liabilities as applicable on our Consolidated Balance Sheets, are based on historical experience of warranty claims. In the event the actual results of these items differ from the estimates, an adjustment to the warranty obligation would be recorded.

m.	Shipping and Handling Costs

Costs incurred by us related to shipping and handling are included in cost of products sold. Amounts charged to customers pertaining to these costs are reflected as revenue.

n.	Advertising Expenses

Advertising costs are expensed as incurred and are included in selling, general and administrative expenses in the accompanying Consolidated Statements of Income and Comprehensive Income. Such expenses amounted to

$32

and

$59

for the years ended

December

31,

2016

and

2015,

respectively.

o.	Research and Development

Research and development expenditures are charged to operations as incurred. The majority of research and development expenses pertain to salaries and benefits, developmental supplies, depreciation and other contracted services. During

2016

and

2015,

we expended

$6,155

and

$6,112,

respectively, on research and development, including

$209

and

$509,

respectively, on customer sponsored research and development activities, which are included in cost of goods sold. We recognized

$209

and

$509

of revenue relating to these activities during

2016

and

2015,

respectively.

p.	Environmental Costs

Environmental expenditures that relate to current operations are expensed. Remediation costs that relate to an existing condition caused by past operations are accrued when it is probable that these costs will be incurred and can be reasonably estimated.

q.	Income Taxes

We account for income taxes using the asset and liability method. Under this method, deferred tax assets and liabilities are determined based on differences between financial reporting and tax basis of assets and liabilities and are measured using the enacted tax rates and laws that are expected to be in effect when the differences are expected to reverse.

A valuation allowance is required when it is more likely than not that the recorded value of a deferred tax asset will not be realized. As of

December

31,

2016,

we continued to recognize a valuation allowance in the U.S. and certain U.K. operations on our net deferred tax assets to the extent that temporary tax differences and the U.S. and U.K. net operating loss and tax credit carry-forwards resulting in the deferred tax asset are not able to be offset by future reversing temporary differences. The assessment of the realizability of the U.S. NOL was based on a number of historical factors including, our history of net operating losses, the volatility of our earnings, our historical operating volatility, our historical inability to accurately forecast earnings for future periods and the continued uncertainty of the general business climate as of the end of

2016.

We concluded that these historical factors represent sufficient negative evidence and have concluded that we should record a full valuation allowance against these net deferred tax assets. We also recorded a full valuation allowance on our net deferred tax asset for the year ended

December

31,

2015.

r.	Concentration Related to Customers and Suppliers

During the year ended

December

31,

2016,

we had

two

major customers, both large defense primary contractors, which together comprised

25%

of our revenues. During the year ended

December

31,

2015,

one

of those customers comprised

23%

of our sales. There were no other customers that comprised greater than

10%

of our total revenues during these years.

Currently, we do not experience significant seasonal trends in our revenues. Since a significant portion of our revenues are based on purchases from U.S. and allied country defense departments, the timing of our sales could be impacted by delays in the government budget process and the decisions to deploy resources to support military purchases of our products.

We generally do not distribute our products to a concentrated geographical area nor is there a significant concentration of credit risks arising from individuals or groups of customers engaged in similar activities, or who have similar economic characteristics. While direct and indirect sales to the U.S. Department of Defense have been substantial during

2016

and

2015,

we do not consider this customer to be a significant credit risk. We do not normally obtain collateral on trade accounts receivable.

Certain materials and components used in our products are available only from a single or a limited number of suppliers. As such, some materials and components could become in short supply resulting in limited availability and/or increased costs. Additionally, we

may

elect to develop relationships with a single or limited number of suppliers for materials and components that are otherwise generally available. Although we believe that alternative suppliers are available to supply materials and components that could replace materials and components currently used and that, if necessary, we would be able to redesign our products to make use of such alternatives, any interruption in the supply from any supplier that serves as a sole source could delay product shipments and have a material adverse effect on our business, financial condition and results of operations. We have experienced interruptions of product deliveries by sole source suppliers in the past.

s.	Fair Value Measurements and Disclosures

Fair value is defined as the price that would be received for an asset or the exit price that would be paid to transfer a liability in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into

three

levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement:

Level

Quoted prices in active markets for identical assets or liabilities.

Level

Observable inputs, other than Level

prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or that we corroborate with observable market data for substantially the full term of the related assets or liabilities.

Level

Unobservable inputs supported by little or no market activity that are significant to the fair value of the assets or liabilities.

The fair value of financial instruments approximated their carrying values at

December

31,

2016

and

2015.

The fair value of cash, trade accounts receivable, trade accounts payable, and accrued liabilities approximates carrying value due to the short-term nature of these instruments.

t.	Earnings Per Share

Basic earnings per share is computed by dividing net income or loss attributable to Ultralife Corporation by the weighted average number of common shares outstanding for the period. Diluted earnings per share calculations reflect the assumed exercise and conversion of dilutive employee stock options and unvested restricted stock, if any, applying the treasury stock method. Diluted earnings per share in

2016

include

1,238,804

outstanding in-the-money stock options that add

135,458

shares to the number of shares outstanding, and include

15,900

restricted stock units that add

9,538

shares outstanding. Diluted earnings per share in

2015

include

1,312,282

outstanding in-the-money stock options that add

260,318

shares to the number of shares outstanding, and include

32,800

restricted stock units which add

15,385

shares outstanding.

Diluted earnings per share calculations exclude the effect of approximately

1,332,281

and

945,687

employee stock options in

2016

and

2015,

respectively, as such options have an exercise price in excess of the weighted average market price of the Company’s common stock.

u.	Stock-Based Compensation

We have various stock-based employee compensation plans that are described more fully in Note

The compensation cost relating to share-based payment transactions is measured at the grant date, based on the estimated fair value of the award, and is recognized as expense over the employee’s requisite service period (generally the vesting period of the equity award).

v.	Segment Reporting

We have

two

operating segments – Battery & Energy Products, and Communications Systems. The basis for determining our operating segments is the manner in which financial information is used in monitoring our operations. Management operates and organizes itself according to business units that comprise unique products and services across geographic locations.

w.	Recent Accounting Pronouncements

May

2014,

the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No.

2014

(Topic

606)

“Revenue from Contracts with Customer” related to revenue from contracts with customers. Under this standard, revenue is recognized when promised goods or services are transferred to customers in an amount that reflects the consideration that is expected to be received for those goods or services. The updated standard will replace most existing revenue recognition guidance under GAAP and permits the use of either the retrospective or cumulative effect transition method. Topic

606

is effective for annual reporting periods beginning after

December

15,

2017,

including interim periods within that reporting period. We do not expect the adoption of Topic

606

to have a material impact on our Consolidated Financial Statements. We do not anticipate early adoption of the standard.

July

2015,

the FASB issued Accounting Standards Update No.

2015

11,

"Simplifying the Measurement of Inventory," which simplifies the subsequent measurement of inventory by using only the lower of cost and net realizable value. This standard is effective for fiscal years and interim periods within those years beginning after

December

15,

2016,

and must be applied on a retrospective basis. The adoption of this standard is not expected to have a material impact on our Consolidated Financial Statements.

November

2015,

the FASB issued Accounting Standards Update No.

2015

17,

“Income Taxes, Balance Sheet Classification of Deferred Taxes” which requires that deferred tax assets and liabilities be classified as noncurrent in a classified statement of financial position. The new standard is effective for annual periods beginning after

December

15,

2016,

and interim periods within that reporting period. The guidance under this new statndard

may

be applied either prospectively or retrospectively to all periods presented. We will apply the standard retrospectively beginning in the

first

quarter

2017.

February

2016,

the FASB issued Accounting Standards Update No.

2016

02,

“Leases” requires that lessees recognize a right-to-use asset and related lease liability for all significant financing and operating leases not considered short-term leases, and specifies where in the statement of cash flows the related lease payments are to be presented. The guidance is effective for years beginning after

December

15,

2018

and early adoption is permitted. The Company has not yet determined the impact of this new standard on our Consolidated Financial Statements, but believes it

may

be significant. We have not yet determined whether we will adopt the standard in advance of its required effective date.

March

2016,

the FASB issued Accounting Standards Update No.

2016

09,

“Compensation – Stock Compensation (Topic

718)”

Improvements to Employee Share-Based Payment Accounting” which involves several aspects of accounting for share-based payment transactions, including income tax consequences, forfeitures and classification on the statement of cash flows. The guidance is effective for annual periods beginning after

December

15,

2016,

and interim periods within those periods. We will adopt this standard effective

January

2017.

We do not expect this standard to have a material impact on our Consolidated Financial Statements.

October

2016,

the FASB issued Accounting Standards Update No.

2016

16,

“Income Taxes (Topic

740),

Intra-Entity Transfers of Assets Other Than Inventory”. The new guidance requires that entities recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs, rather than when the asset is sold to an outside party. The guidance is effective for annual reporting periods beginning after

December

15,

2017,

including interim periods within those annual reporting periods. Early adoption is permitted. The new guidance requires adoption on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The company will adopt effective

January

2018

and is currently evaluating the impact this guidance will have on our Consolidated Financial Statements.

August

2016,

the FASB issued Accounting Standards Update No.

2016

15,

“Statement of Cash Flows (Topic

230),

Classification of Certain Cash Receipts and Cash Payments”. The new guidance makes

eight

targeted changes to how cash receipts and cash payments are presented and classified in the statement of cash flows. The guidance is effective for fiscal years beginning after

December

15,

2017,

and interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. An entity that elects early adoption must adopt all of the amendments in the same period. The new guidance requires adoption on a retrospective basis unless it is impracticable to apply, in which case the company would be required to apply the amendments prospectively as of the earliest date practicable. The company will adopt

January

2018

and is currently evaluating the impact this guidance will have on our Consolidated Financial Statements.

Note 2 - Acquisition

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Mergers, Acquisitions and Dispositions Disclosures [Text Block]

Note

– Acquisition

January

13,

2016,

Ultralife UK Limited (the “Merger Subsidiary”), a U.K. corporation and a wholly-owned subsidiary of Ultralife Corporation (the “Company”), completed the acquisition of all of the outstanding ordinary shares of Accutronics Limited (“Accutronics”), a U.K. corporation based in Newcastle-under-Lyme, U.K., from Intrinsic Equity Limited, Catapult Growth Fund Limited Partnership, MJF Pension Trustees Limited, Robert Andrew Phillips and Michael Allen (collectively, the “Sellers”). There are no material relationships between the Company or Merger Subsidiary and any of the Sellers, other than pertaining to this acquisition. Accutronics is a leading independent designer and manufacturer of smart batteries and charger systems for high-performance, feature-laden portable and handheld electronic devices and is classified in the Battery & Energy Products segment. The acquisition of Accutronics advances our strategy of commercial revenue diversification and expands our geographic reach within European OEM’s. With industry experts predicting mid-to-high single digit growth in the global medical batteries market, this strategic investment positions Ultralife well for further penetration of and growing revenue streams from an attractive commercial market.

The acquisition was completed pursuant to the terms of the Share Purchase Agreement dated

January

13,

2016

by and among the Merger Subsidiary and the Sellers. The Merger Subsidiary paid at the time of closing an aggregate purchase price of

£7,575

($10,976)

in cash, and in exchange the Merger Subsidiary received all of the outstanding shares of Accutronics ordinary stock. Monies to fund the purchase price were advanced to the Merger Subsidiary from the Company’s general corporate funds.

The purchase price was subject to adjustment based on the difference between actual and estimated amounts of working capital of Accutronics as well as the amount of net cash of Accutronics. The adjustment resulted in a final payment to the Sellers in the amount of

£133

February

24,

2016,

bringing the total aggregate purchase price to

£7,708

($11,161).

The purchase price allocation was determined in accordance with the accounting treatment of a business combination in Financial Accounting Standards Board (“FASB”) ASC Topic

805,

Business Combinations

. Under the guidance, the fair value of the consideration was determined and the assets acquired and liabilities assumed have been recorded at their fair values at the date of the acquisition. The excess of the consideration paid over the estimated fair values has been recorded as goodwill.

The allocation of purchase price to the assets acquired and liabilities assumed at the date of the acquisition is presented in the table below (in thousands). Management is responsible for determining the fair value of the tangible and intangible assets acquired and liabilities assumed as of the date of acquisition. Management considered a number of factors, including reference to an analysis performed under FASB ASC Topic

805

solely for the purpose of allocating the purchase price to the assets acquired and liabilities assumed. The Company’s estimates are based upon assumptions believed to be reasonable, but which are inherently uncertain and unpredictable. These valuations require the use of management’s assumptions, which would not reflect unanticipated events and circumstances that occur. The originally reported purchase price allocation has been updated based on information obtained about facts and circumstances that existed as of the acquisition date. As a result, adjustments were made which reduced identifiable intangible assets and property, plant and equipment by

$402

and

$99,

respectively, and increased prepaids and other current assets, inventory, deferred income taxes on intangible assets and goodwill by

$291,

$75,

$113

and

$104,

respectively.

Cash	$	1,304
Accounts Receivable		1,344
Inventory		2,167
Prepaids and Other Current Assets		584
Property, Plant & Equipment		269
Identifiable Intangible Assets		4,374
Goodwill		4,487
Accounts Payable		(1,009	)
Accrued Expenses		(1,136	)
Income Taxes Payable		(111	)
Non-Current Liabilities		(209	)
Deferred Income Taxes		(74	)
Deferred Income Taxes on Intangible Assets		(829	)

Total Consideration	$	11,161

The goodwill included in the Company’s purchase price allocation presented above represents the value of Accutronics assembled and trained workforce, the incremental value that Accutronics engineering and technology will bring to the Company and the revenue growth expected to occur over time attributable to increased market penetration from future new products and customers. The goodwill acquired in connection with the acquisition is not deductible for income tax purposes.

The identifiable intangible assets included in the Company’s purchase price allocation represent customer contracts and relationships of

$2,821,

intellectual property of

$1,132

and trade name of

$421

that are amortized straight-line over a period ranging from

years.

During the year ended

December

31,

2016,

direct acquisition costs of

$251

and increased cost of sales related to purchase accounting adjustments of

$96

for inventory acquired were recorded in the Company’s Consolidated Statement of Income and Comprehensive Income. Accutronics contributed revenue of

$10,362

and operating income of

$436

during

the

twelve

-month period ended

December,

2016,

reflecting the purchase accounting adjustments and non-recurring costs directly related to the acquisition.

Set forth below is the unaudited pro forma results of the Company and Accutronics for the

twelve

-month period ended

December

31,

2015

as if the acquisition occurred as of

January

2015

along with the reported results for the

twelve

-month period ended

December

31,

2016

which includes the consolidation of Accutronics. The results of Accutronics were not material for the period from

January

2016

to the acquisition date. The unaudited pro forma results include purchase accounting adjustments to reflect the restatement of inventory to estimated fair value and the resulting increase in cost of sales for the sale of the inventory during this

twelve

-month period, direct acquisition costs and the amortization of intangible assets resulting from the purchase price allocation.

	Twelve-Months Ended
	Dec. 31, 2015		Dec. 31, 2016

Revenue	$	89,534	$	82,460
Operating Income	$	3,858	$	3,763
Net Income Attributable to Ultralife Corporation	$	3,258	$	3,509
Earnings Per Share:
Basic	$	.20	$	.23
Diluted	$	.20	$	.23

The unaudited pro forma results do not reflect the realization of any expected cost savings or other synergies from the acquisition of Accutronics as a result of restructuring activities, other cost savings initiatives or sales synergies following the completion of the business combination. Accordingly, these unaudited pro forma results are presented for informational purposes only and are not necessarily indicative of what the actual results of operations of the combined Company would have been if the acquisition had occurred at the beginning of the

2015

period presented, nor are they indicative of future results of operations.

Note 3 - Share Repurchase Program	12 Months Ended
Note 3 - Share Repurchase Program	Dec. 31, 2016
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	Note 3 – Share Repurchase Program On April 28, 2014, the Company’s Board of Directors approved a share repurchase program (the “Share Repurchase Program”) which became effective on May 1, 2014 and under which the Company was authorized to repurchase up to 1.8 million shares of its outstanding common stock over a period not to exceed twelve months. The Share Repurchase Program was extended through June 2, 2016, and the maximum number of shares authorized to be repurchased under the program was increased to 3.4 million shares. Share repurchases under this program were made in accordance with SEC Rule 10b - 18 using a variety of methods, which included open market purchases and block trades in compliance with applicable insider trading and other securities laws and regulations. With the exception of repurchases made during stock trading black-out periods under 10b5 - 1 Plans, the timing, manner, price and amount of any repurchases were determined at the Company’s discretion. The Share Repurchase Program expired on June 2, 2016 and did not obligate the Company to repurchase any specific number of shares. In 2016, we repurchased a total of 156,092 shares of our common stock for an aggregate consideration of $630, of which 149,904 shares were repurchased under the Share Repurchase Program for an aggregate amount (excluding fees and commissions) of $603. In 2015, we repurchased a total of 2,258,929 shares of our common stock for an aggregate consideration of $9,388, of which 2,225,437 shares were repurchased under the Share Repurchase Program for an aggregate amount (excluding fees and commissions) of $9,162. From the inception of the Share Repurchase Program on May 1, 2014 through its expiration on June 2, 2016, the Company repurchased 2,592,095 shares for an aggregate cost (excluding fees and commissions) of $10,480.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

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-Name Accounting Standards Codification
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-Section S99
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Section S99
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(d))
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-Name Accounting Standards Codification
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+ Details

Note 4 - Supplemental Balance Sheet Information

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Supplemental Balance Sheet Disclosures [Text Block]

Note

- Supplemental Balance Sheet Information

a.	Inventory , Net

Inventories are stated at the lower of cost or market with cost determined under the

first

-in,

first

-out (FIFO) method. The composition of inventories, net was:

	December 31,
	201 6		201 5
Raw Materials	$	14,482	$	11,602
Work in Process		986		1,560
Finished Products		7,988		10,652
Total	$	23,456	$	23,814

The

December

31,

2016

inventories include

$1,443

for Accutronics, which was acquired on

January

13,

2016.

b.	Property, Plant and Equipment

Major classes of property, plant and equipment consisted of the following:

	December 31,
	201 6			201 5
Land	$	123		$	123
Buildings and Leasehold Improvements		7,757			7,490
Machinery and Equipment		49,722			49,609
Furniture and Fixtures		1,947			1,974
Computer Hardware and Software		5,223			4,585
Construction in Progress		421			745
		65,193			64,526
Less – Accumulated Depreciation		(57,194	)		(55,488	)
Total	$	7,999		$	9,038

Estimated costs to complete construction-in-progress as of

December

31,

2016

and

2015

were approximately

$170

and

$180,

respectively.

Depreciation expense was

$2,223

and

$2,401

for the years ended

December

31,

2016

and

2015,

respectively.

c.	Impairment of Goodwill, Intangible Assets and Long-Lived Assets

We elected to forego the qualitative assessment for our

four

identified reporting units and conducted a quantitative assessment.

The fair value for our reporting units subjected to this quantitative test could not be determined using readily available quoted Level

inputs or Level

inputs that were observable in active markets. Therefore, we used an income approach to estimate the fair value of the reporting units, using Level

inputs. To estimate the fair value of the reporting units, we used significant estimates and judgments, including an assessment of our future revenue prospects, particularly government/defense opportunities, as well as our estimates of the probabilities of the opportunities being funded, awarded, and awarded to us. Other key estimates and factors used in the valuation model included revenue growth rates and profit margins based on internal forecasts, as well as industry and market based terminal growth rates, inputs to the weighted-average cost of capital used to discount future cash flows, and earnings multiples. As a result of the goodwill impairment tests performed during

2016

and

2015,

we determined that an impairment was not required.

Similarly, for our

four

other indefinite-lived intangible assets (trademarks), we elected to forego the qualitative assessment and proceeded to perform quantitative assessments.

The fair value for our indefinite-lived intangible assets subjected to this quantitative test could not be determined using readily available quoted Level

inputs or Level

inputs that were observable in active markets. Therefore, we used a relief from royalty approach, to estimate the fair value of the indefinite-lived intangible assets, using Level

inputs. This method also required us to use significant estimates and judgmental factors. The key estimates and factors used in the valuation model included revenue growth rates, as well as industry and market based terminal growth rates, inputs to the weighted-average cost of capital used to discount future cash flows, and determined royalty rates from market data. As a result of the impairment tests performed during

2016,

we determined that

impairments were required. As a result of the impairment tests performed during

2015,

we determined that an impairment amounting to

$150

was required to reduce the carrying value of

one

Communications Systems business trademark to its estimated fair value.

There is a possibility that our goodwill and other intangible assets, particularly in our Communications Systems business, could be impaired should there be a significant change in our internal forecasts and other assumptions we use in our impairment analysis.

Goodwill

The following table summarizes the goodwill activity by segment for the years ended

December

31,

2016

and

2015:

	Battery & Energy Products			Communi- cations Systems		Total
Balance – January 1, 2015	$	4,914		$	11,493	$	16,407
Effect of Foreign Currency Translation		(124	)		-		(124	)
Balance – December 31, 2015		4,790			11,493		16,283
Acquisition of Accutronics		4,487			-		4,487
Effect of Foreign Currency Translation		(805	)		-		(805	)
Balance – December 31, 2016	$	8,472		$	11,493	$	19,965

e.	Other Intangible Assets

The composition of intangible assets was:

	December 31, 201 6
	Cost		Accumulated Amortization		Net
Trademarks	$	3,404	$	-	$	3,404
Customer Relationships		6,395		3,975		2,420
Patents and Technology		5,455		4,417		1,038
Distributor Relationships		377		368		9
Trade Name		359		36		323
Total Other Intangible Assets	$	15,990	$	8,796	$	7,194

	December 31, 201 5
	Cost		Accumulated Amortization		Net
Trademarks	$	3,411	$	-	$	3,411
Patents and Technology		4,482		4,217		265
Customer Relationships		3,971		3,716		255
Distributor Relationships		370		355		15
Total Other Intangible Assets	$	12,234	$	8,288	$	3,946

Amortization of intangible assets was included in the following financial statement captions:

	Year ended December 31,
	201 6		201 5
Research and Development Expense	$	200	$	130
Selling, General and Administrative Expense		303		105
Total	$	503	$	235

Except for the impairment charge recorded against a Communications Systems trademark in

2015,

the change in the cost value of total intangible assets is a result of the acquisition of Accutronics on

January

13,

2016

and the effect of foreign currency exchange rate fluctuations.

Note 5 - Operating Leases

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Leases of Lessee Disclosure [Text Block]

Note

- Operating Leases

We lease various buildings, machinery, land, automobiles and office equipment. Rental expenses for all operating leases were approximately

$668

and

$672

for the years ended

December

31,

2016

and

2015,

respectively. Future minimum lease payments under non-cancelable operating leases as of

December

31,

2016

are as follows:

201 7				201 8				201 9				20 20				202 1
$	660			$	558			$	416			$	100			$	-

Note 6 - Debt

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Debt Disclosure [Text Block]

Note

- Debt

Credit Facilities

We are party to a Revolving Credit, Guaranty and Security Agreement (the “Credit Agreement”) and related security agreements with PNC Bank, National Association (“PNC”) that provides us a

$20

million secured asset-based revolving credit facility that includes a

million letter of credit subfacility (the “Credit Facility”). The Credit Agreement expires on

May

24,

2017.

April

30,

2014,

the Company and PNC entered into an amendment (the “Amendment”) to the Credit Agreement. The Amendment permits the Company to commence the Share Repurchase Program described in Note

provided that (a) the Company is not in default under the Credit Agreement, (b) the Company’s undrawn availability under the Credit Agreement is at least

million both prior to and immediately following any repurchase, (c) the Company’s undrawn availability under the Credit Agreement plus domestic unrestricted cash is at least

million both prior to and immediately following any repurchase, and (d) the Company uses its unrestricted cash for such repurchases and does not request advances against the Credit Agreement for such purposes. On

October

28,

2014,

the Company and PNC entered into a

second

amendment to the Credit Agreement which modifies the definition of EBITDA in the Credit Agreement to include non-cash stock-based compensation expense.

April

29,

2015,

the Company and PNC entered into a

third

amendment to the Credit agreement which permitted the Company to extend the Share Repurchase Program to

April

30,

2016.

June

15,

2015,

the Company and PNC entered into a

fourth

amendment to the Credit Agreement that permitted the expansion of the Share Repurchase Program described in Note

and the extension of this program to

June

2016.

Finally, on

January

13,

2016,

Company and PNC entered into a

fifth

amendment to the Credit Agreement which permitted the Company’s acquisition of Accutronics Ltd. as described in Note

above.

Our available borrowing limit under the Credit Facility fluctuates from time to time based on a borrowing base formula equal to the sum of up to

85%

of eligible accounts receivable plus the least of (a) up to

65%

of the eligible inventory and eligible foreign in-transit inventory, (b) up to

85%

of the appraised net orderly liquidation value of eligible inventory and eligible foreign in-transit inventory, and (c)

$7.5

million, in each case subject to the definitions in the Credit Agreement and reserves required by PNC.

Interest is payable quarterly and will accrue on outstanding indebtedness under the Credit Agreement at the alternate base rate, as defined in the Credit Agreement, plus the applicable margin or at the

one,

two

three

month LIBOR rate plus the applicable margin as selected by us from time to time and listed below.

Quarterly Average Undrawn Borrowing Availability	Applicable Margin for Alternate Base Rate Loans		Applicable Margin for LIBOR Rate Loans
Greater than $8,000,000		1.00%		2.00%
$5,000,000 up to $8,000,000		1.25%		2.25%
Less than $5,000,000		1.50%		2.50%

We must pay a fee on the Credit Facility’s unused availability of

0.375%

per annum and customary letter of credit fees in addition to various collateral monitoring and related fees and expenses.

In addition to customary affirmative and negative covenants, we must maintain a fixed charge coverage ratio as defined in the Credit Agreement of

1.15

1.00,

tested quarterly for the

four

-quarters then ended. As of

December

31,

2016

we were in compliance with all covenants. The Credit Facility is secured by substantially all our assets.

Any outstanding advances must be repaid upon expiration of the term of the Credit Facility. Payments must be made during the term to the extent outstanding advances exceed the maximum amount then permitted to be drawn as advances under the Credit Facility and from the proceeds of certain transactions. Upon the occurrence of an event of default, the outstanding obligations

may

be accelerated and PNC will have other customary remedies.

As of

December

31,

2016,

we had

outstanding balance under the Credit Facility, an applicable interest rate of

4.5%,

borrowing capacity of

$9,549

in addition to our unrestricted cash on hand of

$10,629,

and

outstanding letters of credit related to the Credit Facility.

Note 7 - Commitments and Contingencies

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Commitments and Contingencies Disclosure [Text Block]

Note

- Commitments and Contingencies

Indemnity

Our organizational documents provide that our directors or officers will be reimbursed for all expenses, to the fullest extent permitted by law arising out of their performance.

b.	Purchase Commitments

As of

December

31,

2016,

we have made commitments to purchase approximately

$504

of production machinery and equipment.

China

Our operating facility in China presents risks including, but not limited to, changes in local regulatory requirements, including changes in labor laws, local wage laws, environmental regulations, taxes and operating licenses, compliance with U.S. regulatory requirements, including the Foreign Corrupt Practices Act, uncertainties as to application and interpretation of local laws and enforcement of contract and intellectual property rights,

eminent domain claims, labor disputes, rapid changes in government, economic and political policies,

and other various contingencies that are outside of our control. Any such event could depress our earnings and have other material adverse effects on our business, financial condition and results of operations.

d.	Employment Contracts

We have an employment contract with Michael D. Popielec, our President and Chief Executive Officer, which remains in effect until terminated by either party. This agreement provides for a base salary, as adjusted for increases at the discretion of our Board of Directors, and includes incentive bonuses based upon attainment of specified quantitative and qualitative performance goals. This agreement also provides for severance payments in the event of specified events of termination of employment. In addition, this agreement provides for a lump sum payment in the event of termination of employment in connection with a change in control.

As part of our employment commencement process, employees are required to enter into agreements providing for confidentiality of certain information and the assignment of rights to inventions made by them while employed by us. These agreements also contain certain non-competition and non-solicitation provisions effective during the employment term and for varying periods thereafter depending on position and location. There can be no assurance that we will be able to enforce these agreements. All of our employees agree to abide by the terms of a Code of Ethics policy that provides for the confidentiality of certain information received during the course of their employment.

e.	Product Warranties

We estimate future costs associated with expected product failure rates, material usage and service costs in the development of our warranty obligations. Warranty reserves are based on historical experience of warranty claims and generally will be estimated as a percentage of sales over the warranty period. In the event the actual results of these items differ from the estimates, an adjustment to the warranty obligation would be recorded. Changes in our product warranty liability during the years ended

December

31,

2016

and

2015

were as follows:

	201 6			201 5
Balance, January 1	$	192		$	376
Provision (reversal) for warranties issued		39			(90	)
Settlements made		(59	)		(94	)
Balance, December 31	$	172		$	192

f .	Legal Matters –

We are subject to legal proceedings and claims that arise in the normal course of business. We believe that the final disposition of such matters will not have a material adverse effect on our financial position, results of operations or cash flows.

Dreamliner Litigation

July

2013,

an unoccupied Boeing

787

Dreamliner aircraft operated by Ethiopian Airlines (“EA”) was damaged by a fire while parked at London Heathrow Airport. We participated in and provided technical assistance in support of an investigation of this incident conducted by U.K. and U.S. regulatory authorities as well as by the manufacturer of the aircraft, as we are

one

of many downstream suppliers to that manufacturer. A final report was issued by the Air Accidents Investigative Branch - - UK Civil Aviation regulatory authority, with findings indicating that the fire was primarily caused by circumstances related to the plane’s emergency locator transmitter (“ELT”) manufactured and installed by another company.

A component of the ELT is a battery pack which incorporates Ultralife’s industry-standard Lithium Manganese Dioxide non-rechargeable D-cell. Ultralife has had this cell in production since

2001,

with millions of units produced. The cell is widely-used for global defense and commercial applications. This battery product has gone through rigorous safety and qualification testing, including United Nations Transport of Dangerous Goods, Manual of Tests and Criteria, and is authorized for use in aerospace applications under Technical Standard Order

C142.

May

2015,

we were notified of a lawsuit in which we were named, along with other suppliers to the aircraft manufacturer, concerning that

2013

fire. The suit was filed by EA in the Commercial Court, Queen’s Bench Division of the High Court of Justice, London and seeks as damages

$42,000

plus other unspecified amounts, including those for loss of use and diminution in value of the aircraft. We maintain liability and products liability insurance through reputable providers, and in accordance with our corporate practices, immediately advised and referred this matter to our insurers. We are working with those insurers and their counsel to actively defend against this action, which is ongoing.

At this time, we believe that there is not a reasonable possibility that this incident will result in a material financial exposure to the Company.

Arista Power Litigation

Since

September

2011,

we have been pursuing legal action against Arista Power, Inc. (“Arista”) and our former employee, David Modeen, for, among other things, alleged breach of certain agreements, duties and obligations, including misappropriation of our confidential information and trade secrets, tortious interference, and breach of contract. On

January

12,

2016,

Arista filed for liquidation under Chapter

of the bankruptcy laws of the United States, without accurately identifying our ongoing lawsuit against them. Although we have not withdrawn our lawsuit, nor has it been dismissed, the Company did not submit a Proof of Claim in connection with Arista’s bankruptcy filing, nor does it intend to actively pursue its claims against Arista at this time.

Note 8 - Shareholders' Equity

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Shareholders' Equity and Share-based Payments [Text Block]

Note

- Shareholders' Equity

a.	Stock-Based Compensation Expense

We recorded non-cash stock compensation expense in each period as follows:

	2016		201 5
Stock Options	$	676	$	489
Restricted Stock Grants		34		82
Total	$	710	$	571

These are more fully discussed as follows:

b.	Stock Options

We have various stock-based employee compensation plans, for which compensation cost is recognized in the financial statements. The cost is measured at the grant date, based on the fair value of the award, and is recognized as an expense over the employee’s requisite service period (generally the vesting period of the equity award).

Our shareholders have approved various equity-based plans that permit the grant of stock options, restricted stock and other equity-based awards. In addition, our shareholders have approved the grant of stock options outside of these plans.

June

2004,

our shareholders adopted the

2004

Long-Term Incentive Plan

(“2004

LTIP”) pursuant to which we were authorized to issue up to

750,000

shares of common stock and grant stock options, restricted stock awards, stock appreciation rights and other stock-based awards. Through shareholder approved amendments to the LTIP in

2006,

2008,

2011,

and

2013,

the total number of shares authorized under the LTIP was increased to

2,900,000.

June

2014,

our shareholders approved the

2014

Long-Term Incentive Plan

(“2014

LTIP”) as the successor plan to the

2004

LTIP that expired on

June

10,

2014.

Under the

2014

LTIP, a total of

1,750,000

shares of Common Stock will be available for grant of awards. However, of the total number of shares of common stock available for awards under the

2014

LTIP, no more than

800,000

shares of Common Stock

may

be used for awards other than stock options and stock appreciation rights. Grants under the

2014

LTIP

may

be awarded through

June

2024.

Stock options granted under the LTIPs are either Incentive Stock Options (“ISOs”) or Non-Qualified Stock Options (“NQSOs”). Key employees are eligible to receive ISOs and NQSOs; however, directors and consultants are eligible to receive only NQSOs. Most ISOs vest over a

three

- year period and expire on the

seventh

anniversary of the grant date. All NQSOs issued to non-employee directors vest immediately and expire on the

seventh

anniversary of the grant date. As of

December

31,

2016,

there were

1,243,697

stock options outstanding under the

2004

LTIP and

679,884

stock options outstanding under the

2014

LTIP.

December

30,

2010,

pursuant to the terms of his employment agreement, we granted our President and Chief Executive Officer, Michael D. Popielec, options to purchase shares of common stock under the

2004

LTIP as follows: (i)

50,000

shares at

$6.42,

vesting in annual increments of

12,500

shares over a

four

-year period commencing

December

30,

2011;

(ii)

250,000

shares at

$6.42,

vesting in annual increments of

62,500

shares over a

four

-year period commencing

December

30,

2011;

(iii)

200,000

shares at

$10.00,

with vesting to begin on the date the stock reaches a closing price of

$10.00

per share for

trading days within a

-day trading period, with such vesting in annual increments of

50,000

shares over the

four

anniversary dates of that date; and (iv)

200,000

shares at

$15.00,

with vesting to begin on the date the stock reaches a closing price of

$15.00

per share for

trading days within a

-day trading period, with such vesting in annual increments of

50,000

shares over the

four

anniversary dates of that date. All such options in items (i) and (ii) shall expire on

December

30,

2017.

All such options in items (iii) and (iv) shall expire as of the later of

December

30,

2017

and

five

years after the initial vesting commences, but in no event later than

December

30,

2020.

The market-based conditions for the stock options in items (iii) and (iv) had not been met as of

December

31,

2016.

The options set forth in items (ii), (iii) and (iv) were subject to shareholder approval of an amendment to the

2004

LTIP, which approval was obtained on

June

2011.

January

2011,

pursuant to the terms of his employment agreement, we granted our President and Chief Executive Officer, Michael D. Popielec, an option to purchase

50,000

shares of common stock at

$6.58

under the

2004

LTIP. The option vested in annual increments of

12,500

shares over a

four

-year period commencing

December

30,

2011.

The option expires on

December

30,

2017.

As of

December

31,

2016,

there was

$505

of total unrecognized compensation costs related to outstanding stock options, which we expect to recognize over a weighted average period of

1.1

years.

We use the Black-Scholes option-pricing model to estimate fair value of stock-based awards. The following weighted average assumptions were used to value options granted during the years ended

December

31,

2016

and

2015:

	Years Ended December 31,
	2016			2015
Risk-free interest rate		1.36	%		0.72	%
Volatility factor		48.20	%		48.54	%
Dividends		0.00	%		0.00	%
Weighted average expected life (years)		4.83			4.15
Forfeiture rate		10.0	%		13.8	%

We used a Monte Carlo simulation option-pricing model to estimate the fair value of market performance stock-based awards, of which there were

new awards in the years ended

December

31,

2016

2015.

We calculate expected volatility for stock options by taking an average of historical volatility over the expected term. The computation of expected term was determined based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards and vesting schedules. The interest rate for periods within the contractual life of the award is based on the U.S. Treasury yield in effect at the time of grant. Forfeiture rates are calculated by dividing unvested shares forfeited by beginning shares outstanding. The pre-vesting forfeiture rate is calculated yearly and is determined using a historical

twelve

-quarter rolling average of the forfeiture rates.

The following tables summarize data for the stock options issued by us:

Year Ended December 31, 201 6
	Number of Shares			Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Shares under Option – January 1		2,257,969		$	6.30
Options Granted		369,550			4.69
Options Exercised		(152,789	)		3.86
Options Forfeited or Expired		(151,149	)		6.09
Shares under option – December 31		2,323,581		$	6.22		3.31	$	1,101
Vested and Expected to Vest - December 31		2,192,138		$	6.31		2.98	$	1,006

Options Exercisable – December 31		1,302,390		$	5.05		1.92	$	669

Year Ended December 31, 201 5
	Number of Shares			Weighted Average Exercise Price Per Share
Shares under Option – January 1		2,056,122		$	6.66
Options Granted		411,250			4.68
Options Exercised		(137,937	)		3.90
Options Forfeited or Expired		(71,466	)		11.86
Shares under option – December 31		2,257,969		$	6.30

Options Exercisable – December 31		1,255,736		$	5.22

The following table represents additional information about stock options outstanding at

December

31,

2016:

			Option Outstanding						Options Exercisable
Range of Exercise Prices			Number of Outstanding Options – December 31, 2016		Weighted- Average Remaining Contractual Life		Weighted- Average Exercise Price		Number of Options Exercisable at December 31, 2016		Weighted- Average Exercise Price
$3.22	-	$3.99		608,200		3.68	$	3.76		394,218	$	3.75
$4.00	-	$4.99		686,548		3.62	$	4.40		396,006		4.45
$5.00	-	$9.99		628,833		2.17	$	6.58		512,166		6.52
$10.00	-	$15.00		400,000		4.00	$	12.50		-		-

$3.22	-	$15.00		2,323,581		3.31	$	6.22		1,302,390	$	5.05

The weighted average fair value of options granted during the years ended

December

31,

2016

and

2015

was

$2.01

and

$2.32,

respectively. The total intrinsic value of options (which is the amount by which the stock price exceeded the exercise price of the options on the date of exercise) exercised during the years ended

December

31,

2016

and

2015

was

$149

and

$364,

respectively.

Cash received from option exercises under our stock-based compensation plans for the years ended

December

31,

2016

and

2015

was

$460

and

$538,

respectively. There were

excess tax benefits realized in accumulated paid-in capital on exercised options for the years ended

December

31,

2016

and

2015.

c.	Restricted Stock Awards

During

2014,

we awarded

49,200

restricted stock units under the

2014

LTIP to certain key employees. These units vest over

three

years and we estimated their weighted average grant date fair value to be

$3.24

per share.

$34

and

$82

of expense was recorded in

2016

and

2015,

respectively, relating to these units. In

September

2016,

15,900

shares of the awarded restricted stock vested and the Company repurchased

4,131

shares to satisfy the statutory tax withholding on shares vested for certain employees.

December

31,

2016,

there was

$11

of unrecognized compensation expense related to restricted stock grants.

d.	Reserved Shares

We have reserved

901,700

shares of common stock under the various stock option plans, warrants and restricted stock awards as of

December

31,

2016.

Note 9 - Income Taxes

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Income Tax Disclosure [Text Block]

Note

- Income Taxes

Our income tax provision consists of:

	Years Ended December 31,
	201 6			201 5
Current:
Federal	$	(70	)	$	4
State		20			15
Foreign		13			111
		(37	)		130
Deferred:
Federal		220			169
State		-			-
Foreign		(85	)		11
		135			180
Total income tax provision	$	98		$	310

The deferred income tax provision is primarily due to the recognition of deferred tax liabilities relating to goodwill and certain intangible assets that cannot be predicted to reverse for book purposes during our loss carry-forward periods offset by the deferred tax benefit of the amortization of certain intangible assets of Accutronics (U.K.). The current income tax provision is primarily due to the income reported for Accutronics (U.K.) while the remaining expense is primarily due to state taxes. The benefit associated with the current income tax provision is primarily related to an excess accrual of income taxes in prior years. In

2015,

the deferred provision was reduced by a deferred tax benefit amounting to

$51

relating to our

$150

impairment of a trademark.

Deferred income taxes reflect the net tax effect of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amount used for income tax purposes. Significant components of our deferred tax liabilities and assets are as follows:

	Years Ended December 31,
	201 6			201 5
Deferred Tax Liabilities:
Property, Plant and Equipment	$	-		$	-
Intangible Assets		5,471			4,631
Total Deferred Tax Liabilities		5,471			4,631

Deferred Tax Assets:
Property, Plant and Equipment		77			288
Net Operating Loss Carry-Forwards		27,127			27,283
Tax Credit Carry-Forwards		1,704			1,596
Intangible Assets		2,923			3,391
Accrued Expenses, Reserves and Other		1,527			2,127
Total Deferred Tax Assets		33,358			34,685
Valuation Allowance for Deferred Tax Assets		(33,331	)		(34,593	)
Net Deferred Tax Assets		27			92

Net Deferred Tax Liabilities	$	5,444		$	4,539

Net deferred tax liabilities are comprised of the following balance sheet amounts:

	Years Ended December 31,
	201 6			201 5

Current Deferred Tax Assets	$	94		$	92
Non-Current Deferred Tax Liabilities		(5,538	)		(4,631	)
	$	(5,444	)	$	(4,539	)

The valuation allowance for deferred tax assets decreased by

$1,262

and increased by

$6,642

in the years ended

December

31,

2016

and

2015,

respectively. The

2016

decrease in the valuation allowance was due to the reduction of deferred tax assets due to the Company’s pretax income in

2016.

The

2015

increase in the valuation allowance included an increase of

$7,296

relating to the release of our unrecognized tax benefit during

2015

(see below). Excluding the effect of the release of the unrecognized tax benefit during

2015,

the valuation allowance would have decreased by

$654.

2016

and

2015,

in the U.S. and certain operations in the U.K., we continue to report a valuation allowance for our deferred tax assets that cannot be offset by reversing temporary differences. We continue to conclude that, based on historical factors, it is more likely than not that we will not fully utilize our U.S. and U.K. NOLs that have accumulated over time. The recognition of a valuation allowance on our deferred tax assets results from our evaluation of all available evidence, both positive and negative. The assessment of the realizability of the NOLs is based on a number of factors including, our history of net operating losses, the volatility of our earnings, our historical operating volatility, our historical inability to accurately forecast earnings for future periods and the continued uncertainty of the general business climate as of the end of

2016.

We believe that these historical factors represent negative evidence sufficient to conclude that we should record a full valuation allowance against our deferred tax assets. In both

2016

and

2015,

we have not recorded a valuation allowance against our other foreign deferred tax assets as we believe that it is more likely than not that they will be realized. We continually assess the carrying value of this asset based on relevant accounting standards.

As of

December

31,

2016,

we have domestic and foreign NOLs totaling approximately

$70,976

and

$12,760,

respectively, and domestic tax credits of approximately

$1,704,

available to reduce future taxable income. Included in our NOL carry-forward are foreign loss carry-forwards of approximately

$12,760,

nearly all of which can be carried forward indefinitely. The domestic NOL carry-forward of

$70,976

expires beginning in

2019,

through

2034.

The domestic NOL carry-forward includes approximately

$3,223

for which a benefit will be recorded in capital in excess of par value when realized.

December

31,

2016,

the undistributed earnings of the Company's foreign operations were indefinitely reinvested in those operations.

For financial reporting purposes, income (loss) from continuing operations before income taxes is as follows:

	Years Ended December 31,
	201 6		201 5
United States	$	2,803	$	2,582
Foreign		777		568
	$	3,580	$	3,150

The provision for income taxes differs from the amount of income tax determined by applying the applicable U.S. statutory federal income tax rate to income (loss) from continuing operations before income taxes as follows:

	Years Ended December 31,
	201 6			201 5

Statutory Income Tax Rate		34.0	%		34.0	%
(Increase) Decrease in Tax Provision Resulting From:
Equity Compensation		9.6			2.2
Income Tax Credits		(6.2	)		(4.5	)
Foreign Tax Rates		(2.2	)		(2.2	)
Release of Unrecognized Tax Benefits		-			(231.6	)
Valuation Allowance		(30	)		210.9
Excess Accrual		(5.2	)		-
Other		2.7			1.0
Effective Income Tax Rate		2.7	%		9.8	%

Accounting for Uncertainty in Income Taxes

Our unrecognized tax benefits related to uncertain tax positions at

December

31,

2014

related to Federal and various state jurisdictions. We recorded the release of uncertain tax positions in

2015

relating to the conclusion of a federal tax examination, resulting in a

$21.4

million increase in the amount of our reported domestic NOL carry-forward.

The following table summarizes the activity related to our unrecognized tax benefits:

	Years Ended December 31,
	201 6		201 5
Balance – beginning of year	$	-	$	7,296
Increases related to current year tax positions		-		-
Increases related to prior year tax positions		-		-
Decreases related to prior year tax positions		-		-
Expiration of statute of limitations for assessment of taxes		-		-
Settlements of examinations		-		(7,296	)
Balance – end of year	$	-	$	-

The total unrecognized tax benefit balances at

January

2015

$7,296

was comprised of tax benefits that, if recognized, would result in a deferred tax asset and a corresponding increase in our valuation allowance. As a result, because the benefit would be offset by an increase in the valuation allowance, there would be no net effect on our effective tax rate or income tax provision. We recorded the release of this unrecognized tax benefit amount during

2015

upon the conclusion of a of a federal tax examination, resulting in a

$21.4

million increase in the amount of our reported domestic NOL carry-forward. There were no unrecognized tax benefits at

December

31,

2016.

We are not required to accrue interest and penalties as the unrecognized tax benefits have been recorded as a decrease in our NOL. Interest and penalties would begin to accrue in the period in which the NOLs related to the uncertain tax positions are utilized. We do not expect our unrecognized tax benefits to change significantly over the next

twelve

months.

As a result of our operations, we file income tax returns in various jurisdictions including U.S. federal, U.S. state and foreign jurisdictions. We are routinely subject to examination by taxing authorities in these various jurisdictions. Our U.S. tax matters for the years

2001

through

2016

remain subject to examination by the Internal Revenue Service (“IRS”) due to our NOL carry-forwards. Our U.S. tax matters for the years

2001

through

2016

remain subject to examination by various state and local tax jurisdictions due to our NOL carry-forwards. Our tax matters for the years

2009

through

2016

remain subject to examination by the respective foreign tax jurisdiction authorities.

Note 10 - 401(k) Retirement Benefit Plan	12 Months Ended
Note 10 - 401(k) Retirement Benefit Plan	Dec. 31, 2016
Notes to Financial Statements
Pension and Other Postretirement Benefits Disclosure [Text Block]	Note 10 - 401(k) Retirement Benefit Plan We maintain a defined contribution 401(k) plan covering substantially all employees. Employees can contribute a portion of their salary or wages as prescribed under Section 401(k) of the Internal Revenue Code and, subject to certain limitations, we may, at the discretion of our Board of Directors, authorize an employer contribution based on a portion of the employees' contributions. Since January 2010, we have matched 50% on the first 4% contributed by an employee, or a maximum of 2% of the employee’s income. For 2016 and 2015, we contributed $191 and $201, respectively, to the 401(k) plan.

Note 11 - Business Segment Information

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

Note

- Business Segment Information

We report our results in

two

operating segments: Battery & Energy Products and Communications Systems. The Battery & Energy Products segment includes: Lithium

-volt, cylindrical and various other non-rechargeable batteries, in addition to rechargeable batteries, uninterruptable power supplies, charging systems and accessories. The Communications Systems segment includes: RF amplifiers, power supplies, cable and connector assemblies, amplified speakers, equipment mounts, case equipment, integrated communication system kits and communications and electronics systems design. We believe that reporting performance at the gross profit level is the best indicator of segment performance. As such we report segment performance at the gross profit level and operating expenses as Corporate charges.

2016

	Battery & Energy Products		Communications Systems		Corporate			Total
Revenue	$	64,753	$	17,707	$	-		$	82,460
Segment Contribution		19,580		5,528		(21,345	)		3,763
Interest Expense, Net						(263	)		(263	)
Miscellaneous						80			80
Income Tax Provision						(98	)		(98	)
Non-Controlling Interest						27			27
Net Income Attributable to Ultralife								$	3,509

Total Assets	$	39,691	$	32,021	$	13,032		$	84,744
Capital Expenditures		852		158		367			1,377
Goodwill		8,472		11,493					19,965
Depreciation and Amortization of Intangible Assets		2,042		541		143			2,726
Stock-Based Compensation		403		110		197			710

015

	Battery & Energy Products		Communi cations Systems		Corporate			Total
Revenue	$	65,272	$	11,155	$	-		$	76,427
Segment Contribution		18,698		4,618		(19,986	)		3,330
Interest Expense, Net						(245	)		(245	)
Miscellaneous						65			65
Income Tax Provision						(310	)		(310	)
Non-Controlling Interest						29			29
Net Loss Attributable to Ultralife								$	2,869

Total Assets	$	35,295	$	28,849	$	17,378		$	81,522
Capital Expenditures		355		973		562			1,890
Goodwill		4,790		11,493					16,283
Depreciation and Amortization of Intangible Assets		1,625		98		984			2,707
Intangible Asset Impairment				150					150
Stock-Based Compensation		46		3		522			571

U.S. and No

n-U.S. Revenue Information

2016:	Total Revenue		United States			Non-United States
Battery & Energy Products	$	64,753	$	29,587		$	35,166
Communications Systems		17,707		15,507			2,200
Total	$	82,460		45,094		$	37,366
				55	%		45	%

2015 :	Total Revenue		United States			Non-United States
Battery & Energy Products	$	65,272	$	37,106		$	28,166
Communications Systems		11,155		9,635			1,520
Total	$	76,427	$	46,741		$	29,686
				61	%		39	%

Sales classified to U.S. include shipments to U.S.-based prime contractors which in some cases

may

serve non-U.S. projects

Long-lived assets (including goodwill and intangible assets) held outside the U.S., principally in the United Kingdom and China, were

$11,652

and

$4,748

December

31,

2016

and

2015,

respectively.

Commercial and Government/Defense Revenue Information:

2016 :	Total Revenue		Commercial			Government/ Defense
Battery & Energy Products	$	64,753	$	40,886		$	23,867
Communications Systems		17,707		-			17,707
Total	$	82,460	$	40,886		$	41,574
				50	%		50	%

2015 :	Total Revenue		Commercial			Government/ Defense
Battery & Energy Products	$	65,272	$	33,367		$	31,905
Communications Systems		11,155		-			11,155
Total	$	76,427	$	33,367		$	43,060
				44	%		56	%

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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+ Details

Note 12 - Due From Insurance Company	12 Months Ended
Note 12 - Due From Insurance Company	Dec. 31, 2016
Notes to Financial Statements
Business Insurance Recoveries [Text Block]	Note 1 2 – Due from Insurance Company In June 2011, we experienced a fire that damaged certain inventory and machinery and equipment at our facility in China. The fire occurred after business hours and was fully extinguished quickly with no injuries, and the plant was back in full operation shortly thereafter with no significant disruption in supply or service to customers. We maintain adequate insurance coverage for this operation. The total amount of the loss pertaining to assets and the related expenses was approximately $1,589, including damaged inventory, business interruption and lost profits. We have pursued a claim against our insurance policy, with the majority of our insurance claim related to the recovery of damaged inventory. We had received payments in June 2012 and April 2013 totaling approximately $1,286 as a partial payment on our insurance claim, which resulted in no gain or loss being recognized. Since the filing of the claim and through June 26, 2016, we reflected a receivable from the insurance company of $177, net of our deductible of approximately $126, representing additional proceeds expected to be received. On September 6, 2016, our claim was finalized with the insurance company resulting in a $55 loss included in our 2016 results.

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2016

Accounting Policies [Abstract]

Consolidation, Policy [Policy Text Block]

b.	Principles of Consolidation

Use of Estimates, Policy [Policy Text Block]

c.	Management's Use of Judgment and Estimates

Reclassification, Policy [Policy Text Block]

d.	Reclassifications

Certain items previously reported in specific financial statement captions are reclassified to conform to the current presentation. There were no material reclassifications for the years ended

December

31,

2016

and

2015.

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash

Our cash balances

may

at times exceed federally insured limits. We have not experienced any losses in these accounts and believe we are not exposed to any significant risk with respect to cash.

Receivables, Policy [Policy Text Block]

f.	Accounts Receivable and Allowance for Doubtful Accounts

$277

and

$300

for the years ended

December

31,

2016

and

2015,

respectively.

Inventory, Policy [Policy Text Block]

Inventories

Inventories are stated at the lower of cost or market with cost determined under the

first

-in,

first

-out (FIFO) method. We record provisions for excess, obsolete or slow-moving inventory based on changes in customer demand, technology developments or other economic factors.

Property, Plant and Equipment, Policy [Policy Text Block]

h.	Property, Plant and Equipment

Property, plant and equipment are stated at cost. Depreciation and amortization are computed using the straight-line method over the estimated useful lives. Estimated useful lives are as follows:

Buildings (years)	10	–	20
Machinery and Equipment (years)	5	–	10
Furniture and Fixtures (years)	3	–	10
Computer Hardware and Software (years)	3	–	5
Leasehold Improvements	Lesser of useful life or lease term

Goodwill and Intangible Assets, Policy [Policy Text Block]

i.	Long-Lived Assets, Goodwill and Intangibles

We assess all of our long-lived assets for impairment when events or circumstances indicate that their carrying amounts

may

December

31,

2016

2015.

We do not amortize goodwill and intangible assets with indefinite lives, but instead measure these assets for impairment as of

December

31,

and on an interim basis when events or circumstances indicate that impairment

may

The impairment analysis of goodwill consists

first

may

The quantitative impairment test for goodwill consists of a comparison of the fair value of the reporting unit with the carrying amount of the reporting unit to which it is assigned.

If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. If the carrying amount of a reporting unit exceeds its fair value, a

second

No impairments of long-lived intangible assets were recorded in the year ended

December

31,

2016.

While our testing indicated that the McDowell Research Corporation trademark is not impaired in

2016,

December

31,

2015.

This impairment amounted to

$150.

Future amortization expense of amortizable intangible assets will be approximately

$405,

$373,

$352,

$340

and

$321

for the fiscal years ending

December

31,

2017

through

2021,

respectively.

Foreign Currency Transactions and Translations Policy [Policy Text Block]

j.	Translation of Foreign Currency

December

31,

2016

and

2015

were

$86

and

$48,

respectively.

Revenue Recognition, Policy [Policy Text Block]

k .	Revenue Recognition

Deferred Revenue

–

Guarantees, Indemnifications and Warranties Policies [Policy Text Block]

l.	Warranty Reserves

Shipping and Handling Cost, Policy [Policy Text Block]

m.	Shipping and Handling Costs

Costs incurred by us related to shipping and handling are included in cost of products sold. Amounts charged to customers pertaining to these costs are reflected as revenue.

Advertising Costs, Policy [Policy Text Block]

n.	Advertising Expenses

$32

and

$59

for the years ended

December

31,

2016

and

2015,

respectively.

Research and Development Expense, Policy [Policy Text Block]

o.	Research and Development

2016

and

2015,

we expended

$6,155

and

$6,112,

respectively, on research and development, including

$209

and

$509,

respectively, on customer sponsored research and development activities, which are included in cost of goods sold. We recognized

$209

and

$509

of revenue relating to these activities during

2016

and

2015,

respectively.

Environmental Cost, Expense Policy [Policy Text Block]

p.	Environmental Costs

Income Tax, Policy [Policy Text Block]

q.	Income Taxes

A valuation allowance is required when it is more likely than not that the recorded value of a deferred tax asset will not be realized. As of

December

31,

2016,

2016.

December

31,

2015.

Concentration Risk, Credit Risk, Policy [Policy Text Block]

r.	Concentration Related to Customers and Suppliers

During the year ended

December

31,

2016,

we had

two

major customers, both large defense primary contractors, which together comprised

25%

of our revenues. During the year ended

December

31,

2015,

one

of those customers comprised

23%

of our sales. There were no other customers that comprised greater than

10%

of our total revenues during these years.

2016

and

2015,

we do not consider this customer to be a significant credit risk. We do not normally obtain collateral on trade accounts receivable.

may

Fair Value Measurement, Policy [Policy Text Block]

s.	Fair Value Measurements and Disclosures

three

levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement:

Level

Quoted prices in active markets for identical assets or liabilities.

Level

Observable inputs, other than Level

Level

Unobservable inputs supported by little or no market activity that are significant to the fair value of the assets or liabilities.

The fair value of financial instruments approximated their carrying values at

December

31,

2016

and

2015.

The fair value of cash, trade accounts receivable, trade accounts payable, and accrued liabilities approximates carrying value due to the short-term nature of these instruments.

Earnings Per Share, Policy [Policy Text Block]

t.	Earnings Per Share

2016

include

1,238,804

outstanding in-the-money stock options that add

135,458

shares to the number of shares outstanding, and include

15,900

restricted stock units that add

9,538

shares outstanding. Diluted earnings per share in

2015

include

1,312,282

outstanding in-the-money stock options that add

260,318

shares to the number of shares outstanding, and include

32,800

restricted stock units which add

15,385

shares outstanding.

Diluted earnings per share calculations exclude the effect of approximately

1,332,281

and

945,687

employee stock options in

2016

and

2015,

respectively, as such options have an exercise price in excess of the weighted average market price of the Company’s common stock.

Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]

u.	Stock-Based Compensation

We have various stock-based employee compensation plans that are described more fully in Note

Segment Reporting, Policy [Policy Text Block]

v.	Segment Reporting

We have

two

New Accounting Pronouncements, Policy [Policy Text Block]

w.	Recent Accounting Pronouncements

May

2014,

the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update No.

2014

(Topic

606)

606

is effective for annual reporting periods beginning after

December

15,

2017,

including interim periods within that reporting period. We do not expect the adoption of Topic

606

to have a material impact on our Consolidated Financial Statements. We do not anticipate early adoption of the standard.

July

2015,

the FASB issued Accounting Standards Update No.

2015

11,

December

15,

2016,

and must be applied on a retrospective basis. The adoption of this standard is not expected to have a material impact on our Consolidated Financial Statements.

November

2015,

the FASB issued Accounting Standards Update No.

2015

17,

December

15,

2016,

and interim periods within that reporting period. The guidance under this new statndard

may

be applied either prospectively or retrospectively to all periods presented. We will apply the standard retrospectively beginning in the

first

quarter

2017.

February

2016,

the FASB issued Accounting Standards Update No.

2016

02,

December

15,

2018

and early adoption is permitted. The Company has not yet determined the impact of this new standard on our Consolidated Financial Statements, but believes it

may

be significant. We have not yet determined whether we will adopt the standard in advance of its required effective date.

March

2016,

the FASB issued Accounting Standards Update No.

2016

09,

“Compensation – Stock Compensation (Topic

718)”

December

15,

2016,

and interim periods within those periods. We will adopt this standard effective

January

2017.

We do not expect this standard to have a material impact on our Consolidated Financial Statements.

October

2016,

the FASB issued Accounting Standards Update No.

2016

16,

“Income Taxes (Topic

740),

December

15,

2017,

January

2018

and is currently evaluating the impact this guidance will have on our Consolidated Financial Statements.

August

2016,

the FASB issued Accounting Standards Update No.

2016

15,

“Statement of Cash Flows (Topic

230),

Classification of Certain Cash Receipts and Cash Payments”. The new guidance makes

eight

targeted changes to how cash receipts and cash payments are presented and classified in the statement of cash flows. The guidance is effective for fiscal years beginning after

December

15,

2017,

January

2018

and is currently evaluating the impact this guidance will have on our Consolidated Financial Statements.

Note 2 - Acquisition (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

Cash	$	1,304
Accounts Receivable		1,344
Inventory		2,167
Prepaids and Other Current Assets		584
Property, Plant & Equipment		269
Identifiable Intangible Assets		4,374
Goodwill		4,487
Accounts Payable		(1,009	)
Accrued Expenses		(1,136	)
Income Taxes Payable		(111	)
Non-Current Liabilities		(209	)
Deferred Income Taxes		(74	)
Deferred Income Taxes on Intangible Assets		(829	)

Total Consideration	$	11,161

Business Acquisition, Pro Forma Information [Table Text Block]

	Twelve-Months Ended
	Dec. 31, 2015		Dec. 31, 2016

Revenue	$	89,534	$	82,460
Operating Income	$	3,858	$	3,763
Net Income Attributable to Ultralife Corporation	$	3,258	$	3,509
Earnings Per Share:
Basic	$	.20	$	.23
Diluted	$	.20	$	.23

Note 4 - Supplemental Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	December 31,
	201 6		201 5
Raw Materials	$	14,482	$	11,602
Work in Process		986		1,560
Finished Products		7,988		10,652
Total	$	23,456	$	23,814

Property, Plant and Equipment [Table Text Block]

	December 31,
	201 6			201 5
Land	$	123		$	123
Buildings and Leasehold Improvements		7,757			7,490
Machinery and Equipment		49,722			49,609
Furniture and Fixtures		1,947			1,974
Computer Hardware and Software		5,223			4,585
Construction in Progress		421			745
		65,193			64,526
Less – Accumulated Depreciation		(57,194	)		(55,488	)
Total	$	7,999		$	9,038

Schedule of Goodwill [Table Text Block]

	Battery & Energy Products			Communi- cations Systems		Total
Balance – January 1, 2015	$	4,914		$	11,493	$	16,407
Effect of Foreign Currency Translation		(124	)		-		(124	)
Balance – December 31, 2015		4,790			11,493		16,283
Acquisition of Accutronics		4,487			-		4,487
Effect of Foreign Currency Translation		(805	)		-		(805	)
Balance – December 31, 2016	$	8,472		$	11,493	$	19,965

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	December 31, 201 6
	Cost		Accumulated Amortization		Net
Trademarks	$	3,404	$	-	$	3,404
Customer Relationships		6,395		3,975		2,420
Patents and Technology		5,455		4,417		1,038
Distributor Relationships		377		368		9
Trade Name		359		36		323
Total Other Intangible Assets	$	15,990	$	8,796	$	7,194

	December 31, 201 5
	Cost		Accumulated Amortization		Net
Trademarks	$	3,411	$	-	$	3,411
Patents and Technology		4,482		4,217		265
Customer Relationships		3,971		3,716		255
Distributor Relationships		370		355		15
Total Other Intangible Assets	$	12,234	$	8,288	$	3,946

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

	Year ended December 31,
	201 6		201 5
Research and Development Expense	$	200	$	130
Selling, General and Administrative Expense		303		105
Total	$	503	$	235

Note 8 - Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

	2016		201 5
Stock Options	$	676	$	489
Restricted Stock Grants		34		82
Total	$	710	$	571

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Years Ended December 31,
	2016			2015
Risk-free interest rate		1.36	%		0.72	%
Volatility factor		48.20	%		48.54	%
Dividends		0.00	%		0.00	%
Weighted average expected life (years)		4.83			4.15
Forfeiture rate		10.0	%		13.8	%

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Year Ended December 31, 201 6
	Number of Shares			Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Shares under Option – January 1		2,257,969		$	6.30
Options Granted		369,550			4.69
Options Exercised		(152,789	)		3.86
Options Forfeited or Expired		(151,149	)		6.09
Shares under option – December 31		2,323,581		$	6.22		3.31	$	1,101
Vested and Expected to Vest - December 31		2,192,138		$	6.31		2.98	$	1,006

Options Exercisable – December 31		1,302,390		$	5.05		1.92	$	669

Year Ended December 31, 201 5
	Number of Shares			Weighted Average Exercise Price Per Share
Shares under Option – January 1		2,056,122		$	6.66
Options Granted		411,250			4.68
Options Exercised		(137,937	)		3.90
Options Forfeited or Expired		(71,466	)		11.86
Shares under option – December 31		2,257,969		$	6.30

Options Exercisable – December 31		1,255,736		$	5.22

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

			Option Outstanding						Options Exercisable
Range of Exercise Prices			Number of Outstanding Options – December 31, 2016		Weighted- Average Remaining Contractual Life		Weighted- Average Exercise Price		Number of Options Exercisable at December 31, 2016		Weighted- Average Exercise Price
$3.22	-	$3.99		608,200		3.68	$	3.76		394,218	$	3.75
$4.00	-	$4.99		686,548		3.62	$	4.40		396,006		4.45
$5.00	-	$9.99		628,833		2.17	$	6.58		512,166		6.52
$10.00	-	$15.00		400,000		4.00	$	12.50		-		-

$3.22	-	$15.00		2,323,581		3.31	$	6.22		1,302,390	$	5.05

Note 9 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Years Ended December 31,
	201 6			201 5
Current:
Federal	$	(70	)	$	4
State		20			15
Foreign		13			111
		(37	)		130
Deferred:
Federal		220			169
State		-			-
Foreign		(85	)		11
		135			180
Total income tax provision	$	98		$	310

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	Years Ended December 31,
	201 6			201 5
Deferred Tax Liabilities:
Property, Plant and Equipment	$	-		$	-
Intangible Assets		5,471			4,631
Total Deferred Tax Liabilities		5,471			4,631

Deferred Tax Assets:
Property, Plant and Equipment		77			288
Net Operating Loss Carry-Forwards		27,127			27,283
Tax Credit Carry-Forwards		1,704			1,596
Intangible Assets		2,923			3,391
Accrued Expenses, Reserves and Other		1,527			2,127
Total Deferred Tax Assets		33,358			34,685
Valuation Allowance for Deferred Tax Assets		(33,331	)		(34,593	)
Net Deferred Tax Assets		27			92

Net Deferred Tax Liabilities	$	5,444		$	4,539

Schedule of Net Deferred Tax Liabilities [Table Text Block]

	Years Ended December 31,
	201 6			201 5

Current Deferred Tax Assets	$	94		$	92
Non-Current Deferred Tax Liabilities		(5,538	)		(4,631	)
	$	(5,444	)	$	(4,539	)

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

	Years Ended December 31,
	201 6		201 5
United States	$	2,803	$	2,582
Foreign		777		568
	$	3,580	$	3,150

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Years Ended December 31,
	201 6			201 5

Statutory Income Tax Rate		34.0	%		34.0	%
(Increase) Decrease in Tax Provision Resulting From:
Equity Compensation		9.6			2.2
Income Tax Credits		(6.2	)		(4.5	)
Foreign Tax Rates		(2.2	)		(2.2	)
Release of Unrecognized Tax Benefits		-			(231.6	)
Valuation Allowance		(30	)		210.9
Excess Accrual		(5.2	)		-
Other		2.7			1.0
Effective Income Tax Rate		2.7	%		9.8	%

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

	Years Ended December 31,
	201 6		201 5
Balance – beginning of year	$	-	$	7,296
Increases related to current year tax positions		-		-
Increases related to prior year tax positions		-		-
Decreases related to prior year tax positions		-		-
Expiration of statute of limitations for assessment of taxes		-		-
Settlements of examinations		-		(7,296	)
Balance – end of year	$	-	$	-

Note 11 - Business Segment Information (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Battery & Energy Products		Communications Systems		Corporate			Total
Revenue	$	64,753	$	17,707	$	-		$	82,460
Segment Contribution		19,580		5,528		(21,345	)		3,763
Interest Expense, Net						(263	)		(263	)
Miscellaneous						80			80
Income Tax Provision						(98	)		(98	)
Non-Controlling Interest						27			27
Net Income Attributable to Ultralife								$	3,509

Total Assets	$	39,691	$	32,021	$	13,032		$	84,744
Capital Expenditures		852		158		367			1,377
Goodwill		8,472		11,493					19,965
Depreciation and Amortization of Intangible Assets		2,042		541		143			2,726
Stock-Based Compensation		403		110		197			710

	Battery & Energy Products		Communi cations Systems		Corporate			Total
Revenue	$	65,272	$	11,155	$	-		$	76,427
Segment Contribution		18,698		4,618		(19,986	)		3,330
Interest Expense, Net						(245	)		(245	)
Miscellaneous						65			65
Income Tax Provision						(310	)		(310	)
Non-Controlling Interest						29			29
Net Loss Attributable to Ultralife								$	2,869

Total Assets	$	35,295	$	28,849	$	17,378		$	81,522
Capital Expenditures		355		973		562			1,890
Goodwill		4,790		11,493					16,283
Depreciation and Amortization of Intangible Assets		1,625		98		984			2,707
Intangible Asset Impairment				150					150
Stock-Based Compensation		46		3		522			571

Revenue from External Customers by Geographic Areas [Table Text Block]

2016:	Total Revenue		United States			Non-United States
Battery & Energy Products	$	64,753	$	29,587		$	35,166
Communications Systems		17,707		15,507			2,200
Total	$	82,460		45,094		$	37,366
				55	%		45	%

2015 :	Total Revenue		United States			Non-United States
Battery & Energy Products	$	65,272	$	37,106		$	28,166
Communications Systems		11,155		9,635			1,520
Total	$	76,427	$	46,741		$	29,686
				61	%		39	%

Schedule of Revenues from External Customers by Business Segment Sector [Table Text Block]

2016 :	Total Revenue		Commercial			Government/ Defense
Battery & Energy Products	$	64,753	$	40,886		$	23,867
Communications Systems		17,707		-			17,707
Total	$	82,460	$	40,886		$	41,574
				50	%		50	%

2015 :	Total Revenue		Commercial			Government/ Defense
Battery & Energy Products	$	65,272	$	33,367		$	31,905
Communications Systems		11,155		-			11,155
Total	$	76,427	$	33,367		$	43,060
				44	%		56	%

Note 1 - Summary of Operations and Significant Accounting Policies (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($) shares
Allowance for Doubtful Accounts Receivable, Current	$ 277	$ 300
Goodwill and Intangible Asset Impairment	0	150
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	405
Finite-Lived Intangible Assets, Amortization Expense, Year Two	373
Finite-Lived Intangible Assets, Amortization Expense, Year Three	352
Finite-Lived Intangible Assets, Amortization Expense, Year Four	340
Finite-Lived Intangible Assets, Amortization Expense, Year Five	321
Foreign Currency Transaction Gain (Loss), before Tax	86	48
Advertising Expense	32	59
Research and Development Expense, Gross	6,155	6,112
Customer Funded Research and Development Expense Included in Cost of Goods Sold	209	509
Research and Development, Revenue	$ 209	$ 509
Number of Dilutive Stock Options Included in Diluted Earnings Per Share Calculation \| shares	1,238,804	1,312,282
Number of Shares Due to Dilutive Stock Options Included in Diluted Earnings Per Share Calculation \| shares	135,458	260,318
Number of Dilutive Restricted Stock Units Included in Diluted EarningsPerShareCalculation \| shares	15,900	32,800
Number of Shares Due to Dilutive Restricted Stock Units Included in Diluted Earnings Per Share Calculation \| shares	9,538	15,385
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount \| shares	1,332,281	945,687
Number of Operating Segments	2
Asset Impairment Charges	$ 0	$ 0
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member]
Number of Major Customers	2	1
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Large Defense Primary Contractors, 1 and 2 [Member]
Concentration Risk, Percentage	25.00%
Customer Concentration Risk [Member] \| Sales Revenue, Net [Member] \| Large Defense Primary Contractor, 1 [Member]
Concentration Risk, Percentage		23.00%

Note 1 - Summary of Operations and Significant Accounting Policies - Property, Plant and Equipment Estimated Useful Life (Details)	12 Months Ended
	Dec. 31, 2016
Building [Member] \| Minimum [Member]
Estimated useful lives (Year)	10 years
Building [Member] \| Maximum [Member]
Estimated useful lives (Year)	20 years
Machinery and Equipment [Member] \| Minimum [Member]
Estimated useful lives (Year)	5 years
Machinery and Equipment [Member] \| Maximum [Member]
Estimated useful lives (Year)	10 years
Furniture and Fixtures [Member] \| Minimum [Member]
Estimated useful lives (Year)	3 years
Furniture and Fixtures [Member] \| Maximum [Member]
Estimated useful lives (Year)	10 years
Computer Equipment [Member] \| Minimum [Member]
Estimated useful lives (Year)	3 years
Computer Equipment [Member] \| Maximum [Member]
Estimated useful lives (Year)	5 years
Leasehold Improvements [Member]
Leasehold Improvements	Lesser of useful life or lease term

Note 2 - Acquisition (Details Textual) - Accutronics Limited [Member] £ in Thousands, $ in Thousands					12 Months Ended
	Feb. 24, 2016 USD ($)	Feb. 24, 2016 GBP (£)	Jan. 13, 2016 USD ($)	Jan. 13, 2016 GBP (£)	Dec. 31, 2016 USD ($)
Payments to Acquire Businesses, Gross			$ 10,976	£ 7,575
Payments to Acquire Businesses, Net of Cash Acquired Working Capital Adjustment \| £		£ 133
Business Combination, Consideration Transferred	$ 11,161	£ 7,708
Business Combination, Adjustment, Intangible Assets	(402)
Business Combination, Adjustment, Property, Plant, and Equipment	(99)
Business Combination, Adjustment, Prepaids and Other Current Assets	291
Business Combination, Adjustment, Inventory	75
Business Combination, Adjustment, Deferred Income Taxes on Intangible Assets	113
Business Combination, Adjustment, Goodwill	$ 104
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 4,374
Business Combination, Acquisition Related Costs					$ 251
Inventory Adjustments					96
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual					10,362
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual					$ 436
Minimum [Member]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years	10 years
Maximum [Member]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years	15 years
Customer Contracts and Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 2,821
Intellectual Property [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	1,132
Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 421

Note 2 - Acquisition - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jan. 13, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill	$ 19,965		$ 16,283	$ 16,407
Accutronics Limited [Member]
Cash		$ 1,304
Accounts Receivable		1,344
Inventory		2,167
Prepaids and Other Current Assets		584
Property, Plant & Equipment		269
Identifiable Intangible Assets		4,374
Goodwill		4,487
Accounts Payable		(1,009)
Accrued Expenses		(1,136)
Income Taxes Payable		(111)
Non-Current Liabilities		(209)
Deferred Income Taxes		(74)
Deferred Income Taxes on Intangible Assets		(829)
Total Consideration		$ 11,161

Note 2 - Acquisition - Unaudited Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Revenue	$ 82,460	$ 89,534
Operating Income	3,763	3,858
Net Income Attributable to Ultralife Corporation	$ 3,509	$ 3,258
Basic (in dollars per share)	$ 0.23	$ 0.20
Diluted (in dollars per share)	$ 0.23	$ 0.20

Note 3 - Share Repurchase Program (Details Textual) - USD ($) $ in Thousands	12 Months Ended		25 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Jun. 02, 2016	May 01, 2014
Treasury Stock, Shares, Acquired	156,092	2,258,929	2,592,095
Treasury Stock, Value, Acquired, Cost Method	$ 635	$ 9,388	$ 10,480
Share Repurchase Program [Member]
Treasury Stock, Shares, Acquired	149,904	2,225,437
Treasury Stock, Value, Acquired, Cost Method	$ 603	$ 9,162
Maximum [Member]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased			3,400,000	1,800,000

Note 4 - Supplemental Balance Sheet Information (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Inventory, Net	$ 23,456,000	$ 23,814,000
Construction in Progress, Gross	170,000	180,000
Depreciation	2,223,000	2,401,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0	$ 150,000
Accutronics Limited [Member]
Inventory, Net	$ 1,443

Note 4 - Supplemental Balance Sheet Information - Components of Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Raw Materials	$ 14,482	$ 11,602
Work in Process	986	1,560
Finished Products	7,988	10,652
Total	$ 23,456	$ 23,814

Note 4 - Supplemental Balance Sheet Information - Components of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, plant and equipment, gross	$ 65,193	$ 64,526
Less – Accumulated Depreciation	(57,194)	(55,488)
Total	7,999	9,038
Land [Member]
Property, plant and equipment, gross	123	123
Building and Building Improvements [Member]
Property, plant and equipment, gross	7,757	7,490
Machinery and Equipment [Member]
Property, plant and equipment, gross	49,722	49,609
Furniture and Fixtures [Member]
Property, plant and equipment, gross	1,947	1,974
Computer Equipment [Member]
Property, plant and equipment, gross	5,223	4,585
Construction in Progress [Member]
Property, plant and equipment, gross	$ 421	$ 745

Note 4 - Supplemental Balance Sheet Information - Summary of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill balance	$ 16,283	$ 16,407
Effect of Foreign Currency Translation	(805)	(124)
Goodwill balance	19,965	16,283
Accutronics Limited [Member]
Acquisition of Accutronics	4,487
Battery & Energy Products Segment [Member]
Goodwill balance	4,790	4,914
Effect of Foreign Currency Translation	(805)	(124)
Goodwill balance	8,472	4,790
Battery & Energy Products Segment [Member] \| Accutronics Limited [Member]
Acquisition of Accutronics	4,487
Communications Systems Segment [Member]
Goodwill balance	11,493	11,493
Effect of Foreign Currency Translation
Goodwill balance	11,493	$ 11,493
Communications Systems Segment [Member] \| Accutronics Limited [Member]
Acquisition of Accutronics

Note 4 - Supplemental Balance Sheet - Composition of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Cost	$ 15,990	$ 12,234
Accumulated Amortization	8,796	8,288
Net	7,194	3,946
Trademarks [Member]
Cost	3,404	3,411
Accumulated Amortization	0
Net	3,404	3,411
Customer Relationships [Member]
Cost	6,395	3,971
Accumulated Amortization	3,975	3,716
Net	2,420	255
Patented Technology [Member]
Cost	5,455	4,482
Accumulated Amortization	4,417	4,217
Net	1,038	265
Distributor Relationships [Member]
Cost	377	370
Accumulated Amortization	368	355
Net	9	$ 15
Trade Names [Member]
Cost	359
Accumulated Amortization	36
Net	$ 323

Note 4 - Supplemental Balance Sheet Information - Amortization of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Amortization of Intangible Assets	$ 503	$ 235
Research and Development Expense [Member]
Amortization of Intangible Assets	200	130
Selling, General and Administrative Expenses [Member]
Amortization of Intangible Assets	$ 303	$ 105

Note 5 - Operating Leases - Future Minimum Lease Payments (Details) $ in Thousands	Dec. 31, 2016 USD ($)
2017	$ 660
2018	558
2019	416
2020	100
2021

Note 6 - Debt (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Note 6 - Debt (Details Textual) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Apr. 30, 2014
Line of Credit Facility, Maximum Borrowing Capacity	$ 20,000
Line of Credit Facility, Remaining Borrowing Capacity	9,549
Cash	$ 10,629	$ 14,393	$ 17,711
Line of Credit, Maximum Borrowing Capacity, Percentage of Eligible Accounts Receivable	85.00%
Line of Credit, Maximum Borrowing Capacity, Percentage of Book Value of Eligible Inventory	65.00%
Line of Credit, Maximum Borrowing Capacity, Percentage of Appraised Net Orderly Liquidation Value of Eligible Inventory	85.00%
Line of Credit Minimum Additional Borrowing Capacity in Addition to Accounts Receivable	$ 7,500
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.375%
Minimum Fixed Charge Coverage Ratio	1.15
Long-term Line of Credit	$ 0
Line of Credit Facility, Interest Rate at Period End	4.50%
Letters of Credit Outstanding, Amount	$ 0
Minimum [Member]
Line of Credit Facility, Remaining Borrowing Capacity				$ 6,000
Cash				$ 8,000
Letter of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,000

Note 6 - Debt - Interest Rate Margins (Details)	12 Months Ended
Note 6 - Debt - Interest Rate Margins (Details)	Dec. 31, 2016
Greater than $8 Million [Member] \| Base Rate [Member]
Interest Rate Margin on Outstanding Borrowings	1.00%
Greater than $8 Million [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Interest Rate Margin on Outstanding Borrowings	2.00%
$5 to $8 Million [Member] \| Base Rate [Member]
Interest Rate Margin on Outstanding Borrowings	1.25%
$5 to $8 Million [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Interest Rate Margin on Outstanding Borrowings	2.25%
Less than $5 Million [Member] \| Base Rate [Member]
Interest Rate Margin on Outstanding Borrowings	1.50%
Less than $5 Million [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Interest Rate Margin on Outstanding Borrowings	2.50%

Note 7 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands		12 Months Ended
	May 04, 2015	Dec. 31, 2016
Loss Contingency, Damages Sought, Value	$ 42,000
Capital Addition Purchase Commitments [Member]
Long-term Purchase Commitment, Amount		$ 504

Note 7 - Commitments and Contingencies - Changes in Produce Warranty Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Accrued Warranty Obligation, Beginning	$ 192	$ 376
Provision (reversal) for warranties issued	39	(90)
Settlements made	(59)	(94)
Accrued Warranty Obligation, Ending	$ 172	$ 192

Note 8 - Shareholders' Equity (Details Textual) - USD ($)			1 Months Ended	12 Months Ended
	Jan. 03, 2011	Dec. 30, 2010	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2004
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number				2,323,581	2,257,969	2,056,122
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				369,550	411,250
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price				$ 4.69	$ 4.68
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options				$ 505,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition				1 year 36 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value				$ 2.01	$ 2.32
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value				$ 149,000	$ 364,000
Proceeds from Stock Options Exercised				460,000	538,000
Excess Tax Benefit from Share-based Compensation, Financing Activities				0	0
Allocated Share-based Compensation Expense				$ 710,000	$ 571,000
Common Stock, Capital Shares Reserved for Future Issuance				901,700
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				0	0
Allocated Share-based Compensation Expense				$ 34,000	$ 82,000
Restricted Stock [Member]
Allocated Share-based Compensation Expense				34,000	$ 82
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares			15,900
Stock Repurchased During Period, Shares			4,131
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options				$ 11,000
2004 Long-term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized				2,900,000			750,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number				1,243,697
2004 Long-term Incentive Plan [Member] \| President [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	50,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 6.58
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Incremental Vesting Shares	12,500
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period		5 years
2004 Long-term Incentive Plan [Member] \| Options I [Member] \| President [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		50,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price		$ 6.42
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Incremental Vesting Shares		12,500
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		4 years
2004 Long-term Incentive Plan [Member] \| Options II [Member] \| President [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		250,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price		$ 6.42
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Incremental Vesting Shares		62,500
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		4 years
2004 Long-term Incentive Plan [Member] \| Options III [Member] \| President [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		200,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price		$ 10
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Incremental Vesting Shares		50,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		4 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Minimum Closing Share Price		$ 10
2004 Long-term Incentive Plan [Member] \| Options IV [Member] \| President [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		200,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price		$ 15
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Incremental Vesting Shares		50,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period		4 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Minimum Closing Share Price		$ 15
2014 Long-term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized				1,750,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number				679,884
2014 Long-term Incentive Plan [Member] \| Awards Other than Stock Options and SARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized				800,000
2014 Long-term Incentive Plan [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period						3 years
Stock Issued During Period, Shares, Restricted Stock Award, Gross						49,200
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value						$ 3.24

Note 8 - Shareholders' Equity - Non-cash Stock Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Stock-based comepensation expense	$ 710	$ 571
Employee Stock Option [Member]
Stock-based comepensation expense	676	489
Performance Shares [Member]
Stock-based comepensation expense	$ 34	$ 82

Note 8 - Shareholders' Equity - Stock Option Assumptions (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Risk-free interest rate	1.36%	0.72%
Volatility factor	48.20%	48.54%
Dividends	0.00%	0.00%
Weighted average expected life (years) (Year)	4 years 302 days	4 years 54 days
Forfeiture rate	10.00%	13.80%

Note 8 - Shareholders' Equity - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Shares under Option, beginning of period (in shares)	2,257,969	2,056,122
Options outstanding - weighted average exercise price (in dollars per share)	$ 6.30	$ 6.66
Options Granted (in shares)	369,550	411,250
Options granted - weighted average exercise price (in dollars per share)	$ 4.69	$ 4.68
Options Exercised (in shares)	(152,789)	(137,937)
Options exercised - weighted average exercise price (in dollars per share)	$ 3.86	$ 3.90
Options Forfeited or Expired (in shares)	(151,149)	(71,466)
Options forfeited or expired - weighted average exercise price (in dollars per share)	$ 6.09	$ 11.86
Shares under option, end of period (in shares)	2,323,581	2,257,969
Options outstanding - weighted average exercise price (in dollars per share)	$ 6.22	$ 6.30
Options outstanding - weighted average remaining contractual term (Year)	3 years 113 days
Options outstanding - aggregate intrinsic value	$ 1,101
Vested and Expected to Vest (in shares)	2,192,138
Options vested and expected to vest - weighted average exercise price (in dollars per share)	$ 6.31
Options vested and expected to vest - weighted average remaining contractual term (Year)	2 years 357 days
Options vested and expected to vest - aggregate intrinsic value	$ 1,006
Options Exercisable (in shares)	1,302,390	1,255,736
Options Exercisable Weighted- Average Exercise Price (in dollars per share)	$ 5.05
Options exercisable - weighted average remaining contractual term (Year)	1 year 335 days
Options exercisable - aggregate intrinsic value	$ 669
Options exercised - weighted average exercise price (in dollars per share)	$ 3.86	$ 3.90
Options forfeited or expired - weighted average exercise price (in shares)	(151,149)	(71,466)
Options forfeited or expired - weighted average exercise price (in dollars per share)	$ 6.09	$ 11.86
Options exercisable (in shares)	1,302,390	1,255,736
Options exercisable (in dollars per share)		$ 5.22

Note 8 - Shareholders' Equity - Options Range of Exercise Prices (Details)	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Lower Range Limit (in dollars per share)	$ 3.22
Upper Range Limit (in dollars per share)	$ 15
Option Outstanding Number of Outstanding Options (in shares) \| shares	2,323,581
Option Outstanding Weighted- Average Remaining Contractual Life (Year)	3 years 113 days
Option Outstanding Weighted- Average Exercise Price (in dollars per share)	$ 6.22
Options Exercisable Number of Options Exercisable (in shares) \| shares	1,302,390
Options Exercisable Weighted- Average Exercise Price (in dollars per share)	$ 5.05
Range One [Member]
Lower Range Limit (in dollars per share)	3.22
Upper Range Limit (in dollars per share)	$ 3.99
Option Outstanding Number of Outstanding Options (in shares) \| shares	608,200
Option Outstanding Weighted- Average Remaining Contractual Life (Year)	3 years 248 days
Option Outstanding Weighted- Average Exercise Price (in dollars per share)	$ 3.76
Options Exercisable Number of Options Exercisable (in shares) \| shares	394,218
Options Exercisable Weighted- Average Exercise Price (in dollars per share)	$ 3.75
Range Two [Member]
Lower Range Limit (in dollars per share)	4
Upper Range Limit (in dollars per share)	$ 4.99
Option Outstanding Number of Outstanding Options (in shares) \| shares	686,548
Option Outstanding Weighted- Average Remaining Contractual Life (Year)	3 years 226 days
Option Outstanding Weighted- Average Exercise Price (in dollars per share)	$ 4.40
Options Exercisable Number of Options Exercisable (in shares) \| shares	396,006
Options Exercisable Weighted- Average Exercise Price (in dollars per share)	$ 4.45
Range Three [Member]
Lower Range Limit (in dollars per share)	5
Upper Range Limit (in dollars per share)	$ 9.99
Option Outstanding Number of Outstanding Options (in shares) \| shares	628,833
Option Outstanding Weighted- Average Remaining Contractual Life (Year)	2 years 62 days
Option Outstanding Weighted- Average Exercise Price (in dollars per share)	$ 6.58
Options Exercisable Number of Options Exercisable (in shares) \| shares	512,166
Options Exercisable Weighted- Average Exercise Price (in dollars per share)	$ 6.52
Range Four [Member]
Lower Range Limit (in dollars per share)	10
Upper Range Limit (in dollars per share)	$ 15
Option Outstanding Number of Outstanding Options (in shares) \| shares	400,000
Option Outstanding Weighted- Average Remaining Contractual Life (Year)	4 years
Option Outstanding Weighted- Average Exercise Price (in dollars per share)	$ 12.50
Options Exercisable Number of Options Exercisable (in shares) \| shares
Options Exercisable Weighted- Average Exercise Price (in dollars per share)

Note 9 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
Note 9 - Income Taxes (Details Textual) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Jan. 01, 2015	Dec. 31, 2014
Deferred Income Tax Expense (Benefit) Asset Impairment Charges		$ (51,000)
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 0	150,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	(1,262,000)	6,642,000
Valuation Allowance, Deferred Tax Assets, Change in Amount Due to Settlement of Uncertain Tax Position		7,296,000
Valuation Allowance, Deferred Tax Assets, Change in Amount, Other		654,000
Increase in Net Operating Loss Carry Forward, Resulting from Settlement of Uncertain Tax Position		21,400,000
Unrecognized Tax Benefits	0		$ 7,296,000	$ 7,296,000
Deferred Tax Assets, Valuation Allowance	33,331,000	34,593,000
Undistributed Earnings of Foreign Subsidiaries	0	0
Domestic Tax Authority [Member]
Operating Loss Carryforwards	70,976,000
Tax Credit Carryforward, Amount	$ 1,704,000
Domestic Tax Authority [Member] \| Earliest Tax Year [Member] \| Internal Revenue Service (IRS) [Member]
Open Tax Year	2001
Domestic Tax Authority [Member] \| Latest Tax Year [Member] \| Internal Revenue Service (IRS) [Member]
Open Tax Year	2016
Domestic Tax Authority [Member] \| Capital Loss Carryforward [Member]
Operating Loss Carryforwards	$ 3,223,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards	12,760,000
Deferred Tax Assets, Valuation Allowance	$ 0	0
Foreign Tax Authority [Member] \| Earliest Tax Year [Member]
Open Tax Year	2009
Foreign Tax Authority [Member] \| Latest Tax Year [Member]
Open Tax Year	2016
State and Local Jurisdiction [Member] \| Earliest Tax Year [Member]
Open Tax Year	2001
State and Local Jurisdiction [Member] \| Latest Tax Year [Member]
Open Tax Year	2016
Trademarks [Member]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		$ 150,000

Note 9 - Income Taxes - Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Federal	$ (70)	$ 4
State	20	15
Foreign	13	111
Total current tax provision	(37)	130
Federal	220	169
State
Foreign	(85)	11
Total deferred tax provision (benefit)	135	180
Total income tax provision	$ 98	$ 310

Note 9 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred Tax Liabilities:
Property, Plant and Equipment
Intangible Assets	5,471	4,631
Total Deferred Tax Liabilities	5,471	4,631
Deferred Tax Assets:
Property, Plant and Equipment	77	288
Net Operating Loss Carry-Forwards	27,127	27,283
Tax Credit Carry-Forwards	1,704	1,596
Intangible Assets	2,923	3,391
Accrued Expenses, Reserves and Other	1,527	2,127
Total Deferred Tax Assets	33,358	34,685
Valuation Allowance for Deferred Tax Assets	(33,331)	(34,593)
Net Deferred Tax Assets	27	92
Net Deferred Tax Liabilities	$ 5,444	$ 4,539

Note 9 - Income Taxes - Net Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current Deferred Tax Assets	$ 94	$ 92
Non-Current Deferred Tax Liabilities	(5,538)	(4,631)
Net Deferred Tax Liabilities	$ (5,444)	$ (4,539)

Note 9 - Income Taxes - United States and Foreign Income (Loss) From Continuing Operations Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
United States	$ 2,803	$ 2,582
Foreign	777	568
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 3,580	$ 3,150

Note 9 - Income Taxes - Effective Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Statutory Income Tax Rate	34.00%	34.00%
Equity Compensation	9.60%	2.20%
Income Tax Credits	(6.20%)	(4.50%)
Foreign Tax Rates	(2.20%)	(2.20%)
Release of Unrecognized Tax Benefits		(231.60%)
Valuation Allowance	(30.00%)	210.90%
Excess Accrual	(5.20%)
Other	2.70%	1.00%
Effective Income Tax Rate	2.70%	9.80%

Note 9 - Income Taxes - Unrecognized Tax Benefits (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Balance – beginning of year		$ 7,296,000
Increases related to current year tax positions
Increases related to prior year tax positions
Decreases related to prior year tax positions
Expiration of statute of limitations for assessment of taxes
Settlements of examinations		(7,296,000)
Balance – end of year	$ 0

Note 10 - 401(k) Retirement Benefit Plan (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	50.00%
Defined Contribution Plan, Maximum Employee Contribution Percentage, Subject to Employer Matching Contribution	4.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	2.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 191	$ 201

Note 11 - Business Segment Information (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Number of Operating Segments	2
Foreign [Member]
Long-Lived Assets	$ 11,652	$ 4,748

Note 11 - Business Segment Information - Segment Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue	$ 82,460,000	$ 76,427,000
Segment Contribution	3,763,000	3,330,000
Interest Expense, Net	(263,000)	(245,000)
Miscellaneous	80,000	65,000
Income Tax Provision	(98,000)	(310,000)
Non-Controlling Interest	27,000	29,000
Net Income Attributable to Ultralife	3,509,000	2,869,000
Total Assets	84,744,000	81,522,000
Capital Expenditures	1,377,000	1,890,000
Goodwill	19,965,000	16,283,000	$ 16,407,000
Depreciation and Amortization of Intangible Assets	2,726,000	2,707,000
Stock-Based Compensation	710,000	571,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	0	150,000
Battery & Energy Products Segment [Member]
Revenue	64,753,000	65,272,000
Segment Contribution	19,580,000	18,698,000
Interest Expense, Net
Miscellaneous
Income Tax Provision
Net Income Attributable to Ultralife
Total Assets	39,691,000	35,295,000
Capital Expenditures	852,000	355,000
Goodwill	8,472,000	4,790,000	4,914,000
Depreciation and Amortization of Intangible Assets	2,042,000	1,625,000
Stock-Based Compensation	403,000	46,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)
Communications Systems Segment [Member]
Revenue	17,707,000	11,155,000
Segment Contribution	5,528,000	4,618,000
Interest Expense, Net
Miscellaneous
Income Tax Provision
Net Income Attributable to Ultralife
Total Assets	32,021,000	28,849,000
Capital Expenditures	158,000	973,000
Goodwill	11,493,000	11,493,000	$ 11,493,000
Depreciation and Amortization of Intangible Assets	541,000	98,000
Stock-Based Compensation	110,000	3,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		150,000
Corporate Segment [Member]
Revenue
Segment Contribution	(21,345,000)	(19,986,000)
Interest Expense, Net	(263,000)	(245,000)
Miscellaneous	80,000	65,000
Income Tax Provision	(98,000)	(310,000)
Non-Controlling Interest	27,000	29,000
Net Income Attributable to Ultralife
Total Assets	13,032,000	17,378,000
Capital Expenditures	367,000	562,000
Goodwill
Depreciation and Amortization of Intangible Assets	143,000	984,000
Stock-Based Compensation	$ 197,000	522,000
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)

Note 11 - Business Segment Information - Domestic and International Revenue by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Revenue	$ 82,460	$ 76,427
Revenue, percentage
UNITED STATES
Revenue	$ 45,094	$ 46,741
Revenue, percentage	55.00%	61.00%
Non-US [Member]
Revenue	$ 37,366	$ 29,686
Revenue, percentage	45.00%	39.00%
Battery & Energy Products Segment [Member]
Revenue	$ 64,753	$ 65,272
Battery & Energy Products Segment [Member] \| UNITED STATES
Revenue	29,587	37,106
Battery & Energy Products Segment [Member] \| Non-US [Member]
Revenue	35,166	28,166
Communications Systems Segment [Member]
Revenue	17,707	11,155
Communications Systems Segment [Member] \| UNITED STATES
Revenue	15,507	9,635
Communications Systems Segment [Member] \| Non-US [Member]
Revenue	$ 2,200	$ 1,520

Note 11 - Business Segment Information - Revenue by Business Segment Sector (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Revenue	$ 82,460	$ 76,427
Revenue, percentage
Commercial [Member]
Revenue	$ 40,886	$ 33,367
Revenue, percentage	50.00%	44.00%
Government & Defense [Member]
Revenue	$ 41,574	$ 43,060
Revenue, percentage	50.00%	56.00%
Battery & Energy Products Segment [Member]
Revenue	$ 64,753	$ 65,272
Battery & Energy Products Segment [Member] \| Commercial [Member]
Revenue	40,886	33,367
Battery & Energy Products Segment [Member] \| Government & Defense [Member]
Revenue	23,867	31,905
Communications Systems Segment [Member]
Revenue	17,707	11,155
Communications Systems Segment [Member] \| Commercial [Member]
Revenue
Communications Systems Segment [Member] \| Government & Defense [Member]
Revenue	$ 17,707	$ 11,155

Note 12 - Due From Insurance Company (Details Textual) - USD ($) $ in Thousands		1 Months Ended	11 Months Ended
	Sep. 06, 2016	Jun. 30, 2011	Apr. 30, 2013	Jun. 26, 2016
Business Interruption Loss, Gross		$ 1,589
Proceeds from Insurance Settlement, Operating Activities			$ 1,286
Gain on Business Interruption Insurance Recovery			$ 0
Insurance Settlements Receivable				$ 177
Business Interruption, Insurance Deductible				$ 126
Gain (Loss) Related to Litigation Settlement	$ (55)

Note 5 - Operating Leases (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Operating Leases, Rent Expense, Net	$ 668	$ 672