Document And Entity Information Finite-lived, estimated fair value us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles Other intangible assets Note To Financial Statement Details Textual Significant Accounting Policies Note 2 - Acquisition Note 5 - Supplemental Balance Sheet Information Note 6 - Stock-based Compensation Note 8 - Operating Leases Note 9 - Commitments and Contingencies Note 11 - Business Segment Information Prepaid expenses and other current assets Note 2 - Acquisition - Assets Acquired and Liabilities Assumed (Details) Accounts receivable Note 2 - Acquisition - Estimated Fair Value and Annual Amortization (Details) Income Tax Disclosure [Text Block] Note 5 - Supplemental Balance Sheet Information - Cash and Restricted Cash (Details) Note 5 - Supplemental Balance Sheet Information - Components of Inventory (Details) Cash ulbi_LineOfCreditFacilityMaximumBorrowingCapacityContingentOnBankApproval Line Of Credit Facility Maximum Borrowing Capacity Contingent On Bank Approval Represents line of credit facility maximum borrowing capacity contingent on bank approval. Note 5 - Supplemental Balance Sheet Information - Components of Property, Plant and Equipment (Details) Inventories us-gaap_LiabilitiesCurrent Total current liabilities Note 5 - Supplemental Balance Sheet Information - Summary of Goodwill (Details) Note 5 - Supplemental Balance Sheet Information - Composition of Intangible Assets (Details) Note 5 - Supplemental Balance Sheet Information - Amortization of Intangible Assets (Details) Accrued expenses and other current liabilities us-gaap_OtherLiabilitiesCurrent Note 6 - Stock-based Compensation - Non-cash Stock Compensation Expense (Details) Note 6 - Stock-based Compensation - Stock Option Activity (Details) Note 8 - Operating Leases - Lease Cost (Details) us-gaap_BusinessCombinationConsiderationTransferred1 Business Combination, Consideration Transferred, Total Note 8 - Operating Leases - Supplement Cash Flow Information Related to Leases (Details) Note 8 - Operating Leases - Supplemental Balance Sheet Information Related to Leases (Details) Note 8 - Operating Leases - Future Minimum Lease Payments (Details) us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife Amortization period (Year) Purchase Commitment, Excluding Long-Term Commitment [Axis] Note 9 - Commitments and Contingencies - Changes in Produce Warranty Liability (Details) Purchase Commitment, Excluding Long-Term Commitment [Domain] Note 11 - Business Segment Information - Segment Activity (Details) Share-Based Payment Arrangement, Option, Activity [Table Text Block] Note 11 - Business Segment Information - Segment Activity -parentheticals (Details) Note 11 - Business Segment Information - Revenue by Business Segment Sector (Details) Note 11 - Business Segment Information - Domestic and International Revenue by Segment (Details) Foreign currency translation adjustments us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance Notes To Financial Statements Vested and expected to vest, weighted average remaining contractual term (Year) Notes To Financial Statements [Abstract] Current portion of long-term debt Vested and expected, weighted average exercise price (in dollars per share) Other comprehensive loss: Exercisable, aggregate intrinsic value Vested and expected to vest, shares (in shares) Vested and expected to vest, aggregate intrinsic value Exercisable, weighted average exercise price (in dollars per share) Exercisable, weighted average remaining contractual term (Year) us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest Total stockholders’ equity Balance Balance Exercisable, shares (in shares) Outstanding, weighted average remaining contractual term (Year) Outstanding, aggregate intrinsic value Outstanding, weighted average exercise price (in dollars per share) Outstanding, weighted average exercise price (in dollars per share) Forfeited or expired, weighted average exercise price (in dollars per share) Granted, weighted average exercise price (in dollars per share) Schedule of Goodwill [Table Text Block] Exercised, weighted average exercise price (in dollars per share) Accrued compensation and related benefits us-gaap_EmployeeRelatedLiabilitiesCurrent Lessee, Operating Leases [Text Block] Accounts payable us-gaap_AccountsPayableCurrent Revolving Credit Facility [Member] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber Outstanding, shares (in shares) Outstanding, shares (in shares) us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod Forfeited or expired, shares (in shares) Credit Facility [Axis] Credit Facility [Domain] Trademarks [Member] Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Cash, Cash Equivalents and Investments [Table Text Block] us-gaap_PolicyTextBlockAbstract Accounting Policies Trade Names [Member] Other Intangible Assets [Member] us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Purchases of property, plant and equipment us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) ulbi_BusinessAcquisitionAmortizationExpense Business Acquisition, Amortization Expense The amount of amortization expense from business acquisition. Current liabilities: Supplemental Balance Sheet Disclosures [Text Block] Patented Technology [Member] us-gaap_Assets Total assets Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] Technology-Based Intangible Assets [Member] Plan Name [Axis] Shareholders' Equity and Share-Based Payments [Text Block] Plan Name [Domain] us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1 Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Customer Relationships [Member] Customer Contracts [Member] Deferred income taxes, net Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Award Type [Domain] Business Description and Accounting Policies [Text Block] Restricted cash us-gaap_RestrictedCashAndCashEquivalents Restricted Cash and Cash Equivalents, Total Net loss attributable to Ultralife us-gaap_NetIncomeLoss Net (loss) income attributable to Ultralife Corporation Award Type [Axis] Accumulated Amortization Net Cost Net (loss) income attributable to non-controlling interest Non-controlling interest Restricted Stock [Member] Share-Based Payment Arrangement, Option [Member] Effect of foreign currency translation Measurement period adjustment (1) Goodwill, Purchase Accounting Adjustments Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Business Combination Disclosure [Text Block] us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment Less: Accumulated depreciation Commitments and Contingencies Disclosure [Text Block] Commitments and contingencies Property, plant and equipment, net Property, plant and equipment, net Goodwill Balance Balance Property, plant, and equipment, gross Foreign currency translation adjustments Net income Net (loss) income INVESTING ACTIVITIES: Earnings Per Share [Text Block] us-gaap_DeferredFinanceCostsGross Debt Issuance Costs, Gross Income tax (benefit) provision Income Tax Expense (Benefit), Total us-gaap_OperatingExpenses Total operating expenses us-gaap_DebtInstrumentTerm Debt Instrument, Term Cash us-gaap_Cash Cash us-gaap_CashAndCashEquivalentsAtCarryingValue Share-based payment expense Amendment Flag us-gaap_ComprehensiveIncomeNetOfTax Comprehensive (loss) income attributable to Ultralife Corporation City Area Code New Accounting Pronouncements, Policy [Policy Text Block] Accounts payable and other liabilities Common stock, shares outstanding (in shares) Balance (in shares) Balance (in shares) Current Fiscal Year End Date us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 Debt Instrument, Basis Spread on Variable Rate Variable lease cost us-gaap_LeaseCost Total lease cost Weighted-average discount rate Document Fiscal Period Focus Operating lease cost Document Fiscal Year Focus us-gaap_IncreaseDecreaseInDeferredIncomeTaxes Deferred income taxes Lease, Cost [Table Text Block] Document Period End Date us-gaap_IncreaseDecreaseInPrepaidExpense Prepaid expenses and other assets Weighted-average remaining lease term (years) (Year) Entity File Number Entity Emerging Growth Company us-gaap_DebtInstrumentFaceAmount Debt Instrument, Face Amount Document Type Entity Small Business Entity Shell Company Document Information [Line Items] Document Information [Table] Entity Filer Category Debt Instrument [Axis] Entity Current Reporting Status Debt Instrument, Name [Domain] London Interbank Offered Rate (LIBOR) [Member] Variable Rate [Domain] Fed Funds Effective Rate Overnight Index Swap Rate [Member] Variable Rate [Axis] us-gaap_IncreaseDecreaseInAccountsReceivable Accounts receivable Entity Tax Identification Number Entity Central Index Key Entity Registrant Name Stock-based compensation – stock options Entity [Domain] Legal Entity [Axis] Entity Address, Address Line One Amortization of intangible assets Entity Address, City or Town NETHERLANDS Entity Address, Postal Zip Code Entity Address, State or Province Treasury stock - at cost; 4,434,592 shares at September 30, 2022 and 4,432,595 shares at December 31, 2021 Entity Common Stock, Shares Outstanding us-gaap_IncreaseDecreaseInInventories Inventories Trading Symbol Local Phone Number Stock option exercises (in shares) Exercised, shares (in shares) us-gaap_TableTextBlock Notes Tables Vesting of restricted stock (in shares) us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity Line of Credit Facility, Maximum Borrowing Capacity Stock option exercises Vesting of restricted stock us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Selling, general and administrative Granted, shares (in shares) Line of Credit Facility, Lender [Domain] Raw materials Lender Name [Axis] us-gaap_LiabilitiesAndStockholdersEquity Total liabilities and stockholders’ equity Finished goods Work in process UNITED STATES Accumulated deficit Research and development Accumulated other comprehensive loss Changes in operating assets and liabilities: Debt Disclosure [Text Block] Amortization of financing fees us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements Operating lease liability, net of current portion Schedule of Inventory, Current [Table Text Block] Total operating lease liability Operating Lease, Liability, Total Current operating lease liability Other intangible assets, net Operating lease right-of-use asset Operating Lease, Right-of-Use Asset us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue Total lease payments us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount Less: Imputed interest 2025 2026 2027 Thereafter us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo Year 2 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree Year 3 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour Year 4 2023 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive Year 5 2024 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths Year 1 Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] Other noncurrent assets us-gaap_OtherAssetsNoncurrent Stock-based compensation us-gaap_ShareBasedCompensation Lessee, Operating Lease, Liability, Maturity [Table Text Block] 2022 Revenues us-gaap_Revenues Operating expenses: Schedule of Finite-Lived Intangible Assets [Table Text Block] Depreciation us-gaap_AssetsCurrent Total current assets Treasury stock, shares (in shares) Common stock – par value $.10 per share; authorized 40,000,000 shares; issued – 20,568,210 shares at September 30, 2022 and 20,522,427 shares at December 31, 2021; outstanding – 16,133,618 shares at September 30, 2022 and 16,089,832 shares at December 31, 2021 Adjustments to reconcile net income to net cash (used in) provided by operating activities: Common Stock, Shares Authorized (in shares) Common stock, shares issued (in shares) Common stock, par value (in dollars per share) us-gaap_DeferredTaxAssetsValuationAllowance Deferred Tax Assets, Valuation Allowance Statistical Measurement [Domain] Operating cash flows used in operating leases Maximum [Member] Minimum [Member] Guarantees, Indemnifications and Warranties Policies [Policy Text Block] Statistical Measurement [Axis] Preferred stock – par value $.10 per share; authorized 1,000,000 shares; none issued Preferred Stock, Shares Issued (in shares) KeyBank [Member] Related to the lender KeyBank. Geographical [Axis] Geographical [Domain] Property, Plant and Equipment [Table Text Block] Preferred Stock, Shares Authorized (in shares) Inventories, net Total Preferred stock, par value (in dollars per share) Revenues Lessee, Lease, Cash Flow Information [Table Text Block] Tabular disclosure of cash flow information related lessee's lease . Customer [Axis] Customer [Domain] Lessee, Lease, Balance Sheet Information [Table Text Block] Tabular disclosure of balance sheet information related lessee's lease . Settlements made us-gaap_ExtendedProductWarrantyAccrual Extended Product Warranty Accrual, Ending Balance Stock-based compensation -restricted stock This element represents the amount of recognized equity-based compensation related to restricted stock options during the period. Accruals for warranties issued us-gaap_ExtendedProductWarrantyAccrualCurrent Extended Product Warranty Accrual, Current us-gaap_ExtendedProductWarrantyAccrualNoncurrent Extended Product Warranty Accrual, Noncurrent Non-controlling interest Construction in Progress [Member] OPERATING ACTIVITIES: Schedule of Segment Reporting Information, by Segment [Table Text Block] Revenue [Policy Text Block] Statement [Line Items] Trade accounts receivable, allowance for doubtful accounts Trade accounts receivable, net of allowance for doubtful accounts of $XX and $346, respectively Furniture and Fixtures [Member] us-gaap_NumberOfOperatingSegments Number of Operating Segments Capital in excess of par value Building and Building Improvements [Member] AOCI Attributable to Parent [Member] Stockholders’ equity: Schedule of Product Warranty Liability [Table Text Block] Land [Member] Interest and financing expense Miscellaneous Other expense us-gaap_NonoperatingIncomeExpense Total other (income) expense Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Domain] Segment Reporting Disclosure [Text Block] Government & Defense [Member] Represents information pertaining to the Government and Defense customer. Revenue, percentage The percentage of total revenue for the period. Commercial [Member] Represents information pertaining to the Commercial customer. Current assets: us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents Total Cash, Beginning of period Cash, End of period Schedule of Revenues from External Customers by Business Segment Sector [Table Text Block] Tabular disclosure of material revenue from specific sectors of each business segment. us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect (DECREASE) INCREASE IN CASH us-gaap_Liabilities Total liabilities us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash provided by (used in) financing activities Effect of exchange rate changes on cash Segment contribution us-gaap_OperatingIncomeLoss Operating (loss) income Other (income) expense: us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash (used in) provided by operating activities Prepaid expenses and other current assets us-gaap_PrepaidExpenseAndOtherAssetsCurrent us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used in investing activities UEHC [Member] Ultralife Excell Holding Corp. (UEHC) Cost of products sold us-gaap_GrossProfit Gross profit Base Rate [Member] Deferred income taxes Accrued compensation and related benefits Current accrued compensation and related benefits acquired through business combinations. us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation Tax withholdings on stock-based awards Backlog [Member] us-gaap_ProductWarrantyAccrual Accrued warranty obligations – beginning Accrued warranty obligations – ending Noncontrolling Interest [Member] The 2014 Long-term Incentive Plan [Member] Represents the long-term incentive stockholder's equity compensation plan. Scenario [Domain] Forecast [Member] Retained Earnings [Member] Proceeds from exercise of stock options Proceeds from Stock Options Exercised Treasury Stock [Member] Scenario [Axis] Additional Paid-in Capital [Member] Common Stock [Member] Equity Components [Axis] Equity Component [Domain] Other Noncurrent Assets [Member] Other Noncurrent Liabilities [Member] (Loss) income before income taxes Accrued Expenses and Other Current Liabilities [Member] Related to accrued expenses and other current liabilities. Accrued Expenses and Other Current Liabilites and Other Noncurrent Liabilities [Member] Related to accured expenses and other current liabilities and other noncurrent liabilities. Capital Addition Purchase Commitments [Member] The amount of capital addition purchase commitments. us-gaap_LineOfCredit Long-Term Line of Credit, Total us-gaap_PaymentsOfDebtIssuanceCosts Payment of debt issuance costs Her Majesty's Revenue and Customs (HMRC) [Member] State and Local Jurisdiction [Member] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Domain] us-gaap_SecuredDebt Secured Debt, Total Internal Revenue Service (IRS) [Member] Income Tax Authority [Axis] Income Tax Authority [Domain] Domestic Tax Authority [Member] Foreign Tax Authority [Member] Revenue from Contract with Customer [Text Block] Machinery and Equipment [Member] Computer Equipment [Member] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Document Quarterly Report Entity Incorporation, State or Country Code us-gaap_UnrecognizedTaxBenefits Unrecognized Tax Benefits, Ending Balance Accounting Policies [Abstract] us-gaap_OpenTaxYear Open Tax Year Document Transition Report Selling, General and Administrative Expenses [Member] Entity Interactive Data Current Security Exchange Name Title of 12(b) Security Research and Development Expense [Member] Income Statement Location [Axis] Income Statement Location [Domain] Segments [Axis] Segments [Domain] Corporate Segment [Member] Potential common shares (in shares) us-gaap_TaxCreditCarryforwardAmount Tax Credit Carryforward, Amount us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Weighted average shares outstanding - diluted (in shares) us-gaap_RepaymentsOfLinesOfCredit Payments on term loan facility Non-US [Member] us-gaap_OperatingLossCarryforwards Operating Loss Carryforwards Borrowings on revolving credit facility Statement [Table] Statement of Financial Position [Abstract] Net (loss) income per share attributable to Ultralife common stockholders – diluted (in dollars per share) Weighted average shares outstanding – basic (in shares) us-gaap_EffectiveIncomeTaxRateContinuingOperations Effective Income Tax Rate Reconciliation, Percent, Total Net (loss) income per share attributable to Ultralife common stockholders – basic (in dollars per share) Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Statement of Cash Flows [Abstract] Statement of Stockholders' Equity [Abstract] Income Statement [Abstract] Revenue from External Customers by Geographic Areas [Table Text Block] us-gaap_LesseeOperatingLeaseRemainingLeaseTerm Lessee, Operating Lease, Remaining Lease Term (Year) us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentInventory Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles Finite-Lived Intangible Assets Amortization Expense [Table Text Block] FINANCING ACTIVITIES: Other noncurrent liabilities us-gaap_OtherLiabilitiesNoncurrent ulbi_MaximumConsolidatedSeniorLeverageRatio Maximum Consolidated Senior Leverage Ratio Represents information related to consolidated senior leverage ratio. Term Loan Facility [Member] Represents information related to term loan facility. Amended Credit Agreement [Member] Represents information related to Amended Credit Agreement. Long-term Debt, Current Maturities [Member] Represents Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligation Net assets acquired ulbi_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredTaxLiabilities Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Liabilities This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete. Communications Systems Segment [Member] Represents the company's communications systems segment. Battery & Energy Products Segment [Member] Represents the company's battery & energy products segment. us-gaap_StockholdersEquity Total Ultralife Corporation equity Other noncurrent liabilities Class of Stock [Axis] Long-term debt, net Deferred tax liability, net Accrued expenses and other current liabilities Accounts payable ulbi_DilutiveSecuritiesIncludedInComputationOfEarningsPerShareAmount Dilutive Securities Included in Computation of Earnings Per Share Amount Stock Option Number of employee stock options included in calculation of diluted earnings per share. us-gaap_LongTermPurchaseCommitmentAmount Long-Term Purchase Commitment, Amount ulbi_DilutiveSecuritiesIncludedInComputationOfEarningsPerShareAmountRestrictedStock Dilutive Securities Included in Computation of Earnings Per Share Amount Restricted Stock Number of restricted shares included in calculation of diluted earnings per share. Property, plant and equipment Other noncurrent assets