Document And Entity Information
Dividends
Note To Financial Statement Details Textual
Significant Accounting Policies
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
Note 1 - Summary of Operations and Significant Accounting Policies
Note 3 - Supplemental Balance Sheet Information
Risk-free interest rate
Note 4 - Debt
Note 5 - Commitments and Contingencies
Note 6 - Shareholders' Equity
Note 7 - Income Taxes
Note 9 - Business Segment Information
Category of Item Purchased [Axis]
Note 1 - Summary of Operations and Significant Accounting Policies - Property, Plant and Equipment Estimated Useful Life (Details)
Long-term Purchase Commitment, Category of Item Purchased [Domain]
Income Tax Disclosure [Text Block]
Note 3 - Supplemental Balance Sheet Information - Cash and Restricted Cash (Details)
Note 3 - Supplemental Balance Sheet Information - Components of Inventory (Details)
Note 3 - Supplemental Balance Sheet Information - Components of Property, Plant and Equipment (Details)
Note 3 - Supplemental Balance Sheet Information - Summary of Goodwill (Details)
Volatility factor
us-gaap_LiabilitiesCurrent
Total Current Liabilities
Note 3 - Supplemental Balance Sheet - Composition of Intangible Assets (Details)
Note 3 - Supplemental Balance Sheet Information - Amortization of Intangible Assets (Details)
Note 4 - Debt - Interest Rate Margins (Details)
Note 5 - Commitments and Contingencies - Future Minimum Lease Payments (Details)
Note 5 - Commitments and Contingencies - Changes in Produce Warranty Liability (Details)
Accrued Expenses and Other Current Liabilities
Weighted Average Expected Life (Year)
Note 6 - Shareholders' Equity - Non-cash Stock Compensation Expense (Details)
Note 6 - Shareholders' Equity - Stock Option Assumptions (Details)
Note 6 - Shareholders' Equity - Stock Option Activity (Details)
Note 6 - Shareholders' Equity - Options Range of Exercise Prices (Details)
Note 7 - Income Taxes - Income Tax Expense (Details)
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Note 7 - Income Taxes - Deferred Tax Assets and Liabilities (Details)
Note 7 - Income Taxes - Net Deferred Tax Liabilities (Details)
Note 7 - Income Taxes - United States and Foreign Income (Loss) From Continuing Operations Before Income Taxes (Details)
Note 7 - Income Taxes - Effective Rate Reconciliation (Details)
Note 9 - Business Segment Information - Segment Activity (Details)
Share-based Compensation, Stock Options, Activity [Table Text Block]
Note 9 - Business Segment Information - Domestic and International Revenue by Segment (Details)
Note 9 - Business Segment Information - Revenue by Business Segment Sector (Details)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Notes To Financial Statements
Notes To Financial Statements [Abstract]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance
Foreign Currency Translation Adjustments
Options vested and expected to vest - weighted average remaining contractual term (Year)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Options vested and expected to vest - weighted average exercise price (in dollars per share)
Options exercisable - aggregate intrinsic value
Other Comprehensive (Loss) Income:
Vested and Expected to Vest (in shares)
Options vested and expected to vest - aggregate intrinsic value
Options exercisable - weighted average remaining contractual term (Year)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value
Grant [Member]
us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
Total Shareholders’ Equity
Balance
Balance
Options Exercisable (in shares)
Options outstanding - weighted average remaining contractual term (Year)
Options outstanding - aggregate intrinsic value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Options outstanding - weighted average exercise price (in dollars per share)
Options outstanding - weighted average exercise price (in dollars per share)
Options forfeited or expired - weighted average exercise price (in dollars per share)
Options granted - weighted average exercise price (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Schedule of Goodwill [Table Text Block]
Options exercised - weighted average exercise price (in dollars per share)
Accrued Compensation and Related Benefits
Accounts Payable
Revolving Credit Facility [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance
Shares under Option, beginning of period (in shares)
Shares under option, end of period (in shares)
Construction in Process in Accounts Payable
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
Options Forfeited or Expired (in shares)
Credit Facility [Axis]
Credit Facility [Domain]
Trademarks [Member]
Cash, Cash Equivalents and Investments [Table Text Block]
us-gaap_PolicyTextBlockAbstract
Accounting Policies
Trade Names [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost
Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost
us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Incremental Common Shares Attributable to Share-based Payment Arrangements, Total
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Cash Paid for Property, Equipment and Improvements
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
LIABILITIES AND SHAREHOLDERS' EQUITY
Supplemental Balance Sheet Disclosures [Text Block]
Sales Commissions [Policy Text Block]
Disclosure of accounting policy for sales commissions.
Patented Technology [Member]
Total Assets
us-gaap_Assets
Total Assets
Supplemental Cash Flow Information:
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
Plan Name [Axis]
Shareholders' Equity and Share-based Payments [Text Block]
Plan Name [Domain]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition
Customer Relationships [Member]
ulbi_TreasuryStockAcquiredAggregateNumberOfShares
Treasury Stock, Acquired, Aggregate Number of Shares
The aggregate number of treasury shares acquired by the company.
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Shipping and Handling Costs [Policy Text Block]
Disclosure of accounting policy for the classification of shipping and handling costs, including whether the costs are included in cost of sales or included in other income statement accounts. If shipping and handling fees are significant and are not included in cost of sales, disclosure includes both the amounts of such costs and the line item on the income statement which includes such costs.
us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
Tax Withholdings on Option Exercises
ulbi_TreasuryStockAcquiredAggregateValue
Treasury Stock, Acquired, Aggregate Value
The aggregate value of treasury stock acquired by the company.
Equity Award [Domain]
Business Description and Accounting Policies [Text Block]
Restricted Cash
Restricted Cash
Award Type [Axis]
Net Income Attributable to Ultralife
us-gaap_NetIncomeLoss
Net Income Attributable to Ultralife Corporation
Accumulated Amortization
Net
Restricted Stock Units (RSUs) [Member]
Cost
Restricted Stock [Member]
Net Income Attributable to Non-Controlling Interest
Non-Controlling Interest
Employee Stock Option [Member]
Effect of Foreign Currency Translation
Commitments and Contingencies Disclosure [Text Block]
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less – Accumulated Depreciation
Property, Equipment and Improvements, Net
Total
Goodwill
Goodwill
Goodwill balance
Goodwill balance
Property, plant and equipment, gross
us-gaap_ConstructionInProgressGross
Construction in Progress, Gross
Capital Addition Purchase Commitments [Member]
us-gaap_TemporaryEquityForeignCurrencyTranslationAdjustments
Foreign Currency Translation Adjustments
Net Income
Net Income
INVESTING ACTIVITIES:
Letter of Credit [Member]
us-gaap_IncomeTaxExpenseBenefit
Income Tax Expense (Benefit), Total
Income Tax Benefit (Expenses)
Total income tax provision
us-gaap_OperatingExpenses
Total Operating Expenses
us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Defined Contribution Plan, Employer Discretionary Contribution Amount
us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay
us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Cash
Cash
us-gaap_CashAndCashEquivalentsAtCarryingValue
Stock-based comepensation expense
Allocated Share-based Compensation Expense, Total
Amendment Flag
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive Income Attributable to Ultralife Corporation
Use of Estimates, Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
Accounts Payable and Other Liabilities
Reclassification, Policy [Policy Text Block]
us-gaap_TreasuryStockSharesAcquired
Treasury Stock, Shares, Acquired
Income taxes receivable and payable
Common stock, shares outstanding (in shares)
Balance (in shares)
Balance (in shares)
Current Fiscal Year End Date
Interest rate margin on outstanding borrowings
Document Fiscal Period Focus
Document Fiscal Year Focus
Consolidation, Policy [Policy Text Block]
us-gaap_IncreaseDecreaseInDeferredIncomeTaxes
Deferred Income Tax Expense
Document Period End Date
us-gaap_IncreaseDecreaseInPrepaidExpense
Prepaid Expenses and Other Assets
Entity Emerging Growth Company
Document Type
Entity Small Business
Document Information [Line Items]
Document Information [Table]
Entity Public Float
Entity Filer Category
Debt Instrument [Axis]
Entity Current Reporting Status
Debt Instrument, Name [Domain]
Entity Voluntary Filers
Entity Well-known Seasoned Issuer
Entity Shell Company
London Interbank Offered Rate (LIBOR) [Member]
Variable Rate [Domain]
us-gaap_GoodwillImpairmentLoss
Goodwill, Impairment Loss
Variable Rate [Axis]
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts Receivable
Entity Central Index Key
us-gaap_DepreciationAndAmortization
Depreciation and Amortization of Intangible Assets
Entity Registrant Name
Stock-Based Compensation -Stock Options
Entity [Domain]
Customer Concentration Risk [Member]
Legal Entity [Axis]
us-gaap_TreasuryStockValueAcquiredCostMethod
Treasury Stock, Value, Acquired, Cost Method
Share Repurchases
Amortization of Intangible Assets
Concentration Risk Type [Axis]
Concentration Risk Type [Domain]
us-gaap_TreasuryStockValue
Treasury Stock - at Cost; 4,132,750 Shares and 4,019,711 Shares, respectively
us-gaap_StockRepurchasedDuringPeriodShares
Stock Repurchased During Period, Shares
Entity Common Stock, Shares Outstanding (in shares)
Sales Revenue, Net [Member]
Vesting of Restricted Shares (in shares)
us-gaap_IncreaseDecreaseInInventories
Inventories
Trading Symbol
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Vesting of Restricted Shares
President [Member]
Stock Option Exercises (in shares)
Options Exercised (in shares)
us-gaap_TableTextBlock
Notes Tables
us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross
Stock Issued During Period, Shares, Restricted Stock Award, Gross
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Stock Option Exercises
Applicable basis points for unused fee
Selling, General and Administrative
Options Granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Line of Credit Facility, Lender [Domain]
Lender Name [Axis]
us-gaap_LiabilitiesAndStockholdersEquity
Total Liabilities and Shareholders' Equity
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
Subsequent Event [Member]
Schedule of Inventory, Current [Table Text Block]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Other Intangible Assets, Net
Pension and Other Postretirement Benefits Disclosure [Text Block]
us-gaap_DeferredIncomeTaxExpenseBenefit
Total deferred tax provision (benefit)
Fair Value Measurement, Policy [Policy Text Block]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Finite-Lived Intangible Assets, Amortization Expense, Year Two
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Finite-Lived Intangible Assets, Amortization Expense, Year Three
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Finite-Lived Intangible Assets, Amortization Expense, Year Four
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Finite-Lived Intangible Assets, Amortization Expense, Year Five
Segment Reporting, Policy [Policy Text Block]
Proceeds from Government Grant
The amount of proceeds from government subsidies.
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months
ulbi_OptionAcceleratedVestingThresholdTradingDays
Option Accelerated Vesting, Threshold Trading Days
Threshold number of specified trading days that common stock price for an accelerated option avesting must exceed threshold percentage within a 30 day trading period for the option accelerated vesting.
ulbi_OptionAcceleratedVestingStockPriceTrigger
Option Accelerated Vesting, Stock Price Trigger
Price of the entity's common stock which would be required to be attained for the option accelerated vesting to become effective.
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Stock-Based Compensation
Stock-Based Compensation
Security Deposits and Other Non-Current Assets
Title of Individual [Axis]
Relationship to Entity [Domain]
Earnings Per Share, Policy [Policy Text Block]
Revenue
us-gaap_Revenues
Revenues, Total
Operating Expenses:
Income Tax, Policy [Policy Text Block]
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Research and Development Expense, Policy [Policy Text Block]
Depreciation
Depreciation, Total
us-gaap_AssetsCurrent
Total Current Assets
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]
Stockholders' Equity Note Disclosure [Text Block]
Treasury stock, shares (in shares)
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Common stock, shares authorized (in shares)
Common stock, shares issued (in shares)
Common Stock – Par Value $.10 Per Share; Authorized 40,000,000 Shares; Issued – 20,053,335 Shares and 19,670,928 Shares, Respectively; Outstanding – 15,920,585 Shares and 15,651,217 Shares, Respectively
Common stock, par value (in dollars per share)
us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Common Stock, Capital Shares Reserved for Future Issuance
us-gaap_DeferredTaxAssetsValuationAllowance
Deferred Tax Assets, Valuation Allowance, Total
Valuation Allowance for Deferred Tax Assets
Environmental Cost, Expense Policy [Policy Text Block]
Range [Domain]
Maximum [Member]
Minimum [Member]
Guarantees, Indemnifications and Warranties Policies [Policy Text Block]
Product and Service [Axis]
Deferred Income Taxes, Net
Product and Service [Domain]
us-gaap_DeferredTaxAssetsNet
Net Deferred Tax Assets
Range [Axis]
us-gaap_OperatingLeasesRentExpenseNet
Operating Leases, Rent Expense, Net, Total
Preferred Stock – Par Value $.10 Per Share; Authorized 1,000,000 Shares; None Issued
us-gaap_NumberOfReportingUnits
Number of Reporting Units
us-gaap_DeferredTaxAssetsLiabilitiesNet
Net Deferred Tax Assets (Liabilities)
Preferred stock, shares issued (in shares)
Interest Paid
Income Taxes Paid
KeyBank [Member]
Related to the lender KeyBank.
us-gaap_NoncurrentAssets
Long-Lived Assets
Geographical [Axis]
Leverage Ratio Less Than 1.5 [Member]
Related to debt instruments when the company's leverage ratio is less than 1.5.
Goodwill and Intangible Assets, Policy [Policy Text Block]
us-gaap_DeferredTaxAssetsGross
Deferred Tax Assets, Gross, Total
Total Deferred Tax Assets
Geographical [Domain]
Property, Plant and Equipment [Table Text Block]
Preferred stock, shares authorized (in shares)
ulbi_MinimumTangibleNetWorth
Minimum Tangible Net Worth
The minimum tangible net worth of the company required for certain debt covenants.
us-gaap_DeferredIncomeTaxLiabilities
Total Deferred Tax Liabilities
Inventories, Net
Total
Leverage Ratio Between 1.5 and 2.5 [Member]
Related to debt instruments where the company's leverage ratio is between 1.5 and 2.5.
Preferred stock, par value (in dollars per share)
Leverage Ratio Greater than 2.5 [Member]
Related to debt instruments where the leverage ratio is greater than 2.5.
Leasehold Improvements
Work in Process
Revenues
Finished Products
Customer [Axis]
Customer [Domain]
us-gaap_DeferredTaxAssetsGoodwillAndIntangibleAssets
Intangible Assets
us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment
Property, Plant and Equipment
us-gaap_ProductWarrantyAccrualPayments
Settlements made
us-gaap_PropertyPlantAndEquipmentGrossPeriodIncreaseDecrease
Capital Expenditures
Raw Materials
Provision for warranties issued
us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities
Accrued Expenses, Reserves and Other
Stock-Based Compensation -Restricted Stock
This element represents the amount of recognized equity-based compensation related to restricted stock options during the period.
Estimated useful lives (Year)
Non-Controlling Interest
Construction in Progress [Member]
OPERATING ACTIVITIES:
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Revenue Recognition, Policy [Policy Text Block]
Statement [Line Items]
Trade accounts receivable, allowance for doubtful accounts
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
Furniture and Fixtures [Member]
Trade Accounts Receivable, Net of Allowance for Doubtful Accounts of $296 and $292, Respectively
Capital in Excess of Par Value
Building and Building Improvements [Member]
Building [Member]
AOCI Attributable to Parent [Member]
Schedule of Product Warranty Liability [Table Text Block]
Shareholders' Equity:
Land [Member]
Interest and Financing Expense
Leasehold Improvements [Member]
Property, Plant and Equipment, Policy [Policy Text Block]
ulbi_CustomerFundedResearchAndDevelopmentExpenseIncludedInCostOfGoodsSold
Customer Funded Research and Development Expense Included in Cost of Goods Sold
Represents the amount of R&D included in cost of goods sold that is customer funded.
ulbi_ResearchAndDevelopmentRevenue
Research and Development, Revenue
Represents the amount of revenue recognized in R&D.
us-gaap_OtherNonoperatingIncomeExpense
Miscellaneous
Property, Plant and Equipment, Type [Axis]
Other Income (Expenses)
us-gaap_NonoperatingIncomeExpense
ulbi_ResearchAndDevelopmentExpenseGross
Research and Development Expense, Gross
The gross costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.
Segment Reporting Disclosure [Text Block]
Property, Plant and Equipment, Type [Domain]
us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
Tax Credit Carryforwards
Government & Defense [Member]
Represents information pertaining to the Government and Defense customer.
us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Net Operating Loss Carryforwards
Revenue, percentage
The percentage of total revenue for the period.
Commercial [Member]
Represents information pertaining to the Commercial customer.
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance
Total
Cash, Beginning of Year
Cash, End of Year
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.
Inventory, Policy [Policy Text Block]
ASSETS
Property, Plant and Equipment, Estimated Useful Life [Table Text Block]
The tabular disclosure of estimated useful life for property, plant and equipment.
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
INCREASE (DECREASE) IN CASH
Accounting Standards Update 2016-09 [Member]
us-gaap_Liabilities
Total Liabilities
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net Cash Provided by (Used in) Financing Activities
Commitments and Contingencies (Note 5)
Effect of Exchange Rate Changes on Cash
Segment Contribution
us-gaap_OperatingIncomeLoss
Operating Income
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net Cash Provided by Operating Activities
Other Expense (Income):
us-gaap_DeferredTaxLiabilitiesOther
Other
Prepaid Expenses and Other Current Assets
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net Cash Used in Investing Activities
us-gaap_DeferredTaxLiabilities
Net Deferred Tax Assets (Liabilities)
us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets
Intangible Assets
Cost of Products Sold
us-gaap_GrossProfit
Gross Profit
Base Rate [Member]
ulbi_DefinedContributionPlanMaximumEmployeeContributionPercentageSubjectToEmployerMatchingContribution
Defined Contribution Plan, Maximum Employee Contribution Percentage, Subject to Employer Matching Contribution
The maximum employee contribution percentage that is subject to employer matching contribution within a defined contribution plan.
Income Taxes Payable
Schedule of Net Deferred Tax Liabilities [Table Text Block]
Tabular disclosure of the components of net deferred tax liability recognized in an entity's statement of financial position.
Type of Adoption [Domain]
Concentration Risk, Credit Risk, Policy [Policy Text Block]
us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Tax Withholdings on Stock-Based Awards
us-gaap_LettersOfCreditOutstandingAmount
Letters of Credit Outstanding, Amount
ulbi_MinimumFixedChargeCoverageRatio
Minimum Fixed Charge Coverage Ratio
The minimum fixed charge coverage ratio required for certain debt covenants.
Adjustments for New Accounting Pronouncements [Axis]
us-gaap_ProductWarrantyAccrual
Accrued Warranty Obligation, Beginning
Accrued Warranty Obligations – Ending
Noncontrolling Interest [Member]
The 2004 Long-term Incentive Plan [Member]
Represents the long-term incentive stockholder's equity compensation plan.
Interest Rate Margins on Outstanding Debt [Table Text Block]
Tabular disclosure of interest rate margins on outstanding debt.
us-gaap_PaymentsForRepurchaseOfCommonStock
Cash Paid to Repurchase Treasury Stock
The 2014 Long-term Incentive Plan [Member]
Represents the long-term incentive stockholder's equity compensation plan.
us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability
Range Three [Member]
Represents information pertaining to range three.
Range One [Member]
Represents information pertaining to range one.
Range Two [Member]
Represents information pertaining to range two.
Forfeiture rate
The forfeiture rate assumption that is used in valuing an option on its own shares.
ulbi_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsIncrementalVestingShares
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Incremental Vesting Shares
Represents the incremental amount of shares to vest annually.
Retained Earnings [Member]
Range Four [Member]
Represents information pertaining to range four.
Proceeds from Exercise of Stock Options
Proceeds from Stock Options Exercised
us-gaap_CurrentStateAndLocalTaxExpenseBenefit
State
ulbi_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsMinimumClosingSharePrice
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Minimum Closing Share Price
Represents the minimum closing price per share to release shares expected to vest.
State
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Treasury Stock [Member]
us-gaap_CurrentForeignTaxExpenseBenefit
Foreign
Foreign
us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Additional Paid-in Capital [Member]
us-gaap_CurrentFederalTaxExpenseBenefit
Federal
Common Stock [Member]
Federal
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Stock Repurchase Program, Number of Shares Authorized to be Repurchased
Equity Components [Axis]
Equity Component [Domain]
us-gaap_CurrentIncomeTaxExpenseBenefit
Total current tax provision
Foreign
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income Before Income Taxes
United States
us-gaap_LineOfCredit
Long-term Line of Credit, Total
Her Majesty's Revenue and Customs (HMRC) [Member]
State and Local Jurisdiction [Member]
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
Internal Revenue Service (IRS) [Member]
Income Tax Authority [Axis]
Income Tax Authority [Domain]
Domestic Tax Authority [Member]
Foreign Tax Authority [Member]
Machinery and Equipment [Member]
Computer Equipment [Member]
Cash and Cash Equivalents, Policy [Policy Text Block]
Receivables, Policy [Policy Text Block]
ulbi_NumberOfMajorCustomers
Number of Major Customers
Represents the number of major customers.
us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits, Ending Balance
Accounting Policies [Abstract]
us-gaap_OpenTaxYear
Open Tax Year
Large Defense Primary Contractor, 1 [Member]
Represents large defense primary contractor 1.
Selling, General and Administrative Expenses [Member]
Awards Other than Stock Options and SARs [Member]
Represents awards other than stock options and SARs.
Options III [Member]
Represents the third issuance of options.
Options I [Member]
Represents all options issued under the first issuance.
Options II [Member]
Represents the second issuance of options.
Options IV [Member]
Represents the fourth issuance of options.
Research and Development Expense [Member]
Income Statement Location [Axis]
Income Statement Location [Domain]
Segments [Axis]
Segments [Domain]
Corporate Segment [Member]
us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Weighted Average Number Diluted Shares Outstanding Adjustment, Total
us-gaap_TaxCreditCarryforwardAmount
Tax Credit Carryforward, Amount
General Business Tax Credit Carryforward [Member]
us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Weighted Average Shares Outstanding – Diluted (in shares)
Tax Credit Carryforward [Axis]
Tax Credit Carryforward, Name [Domain]
Non-US [Member]
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards, Total
Statement [Table]
Scenario [Axis]
Statement of Financial Position [Abstract]
Net Income Per Share Attributable to Ultralife Corporation Common Shareholders – Diluted: (in dollars per share)
Scenario, Unspecified [Domain]
Weighted Average Shares Outstanding – Basic (in shares)
Other
us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Effective Income Tax Rate
2022
us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears
Net Income Per Share Attributable to Ultralife Corporation Common Shareholders – Basic: (in dollars per share)
Tax Rate Change
2023
us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears
Valuation Allowance
2020
us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears
Statement of Cash Flows [Abstract]
2021
us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears
Statement of Stockholders' Equity [Abstract]
2019
us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent
Income Statement [Abstract]
Revenue from External Customers by Geographic Areas [Table Text Block]
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Incentive Stock Options [Member]
Represents information pertaining the Incentive Stock Options.
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Equity Compensation
Finite-lived Intangible Assets Amortization Expense [Table Text Block]
Foreign Tax Rates
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
Income Tax Credits
FINANCING ACTIVITIES:
Other Non-Current Liabilities
Statutory Income Tax Rate
us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
Deferred Income Taxes, Net
us-gaap_DeferredTaxLiabilitiesNoncurrent
Deferred Tax Liabilities
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
Distributor Relationships [Member]
Represents information pertaining to distributor relationships.
ulbi_LineOfCreditFacilityMaximumBorrowingCapacityMayBeIncreasedTo
Line of Credit Facility Maximum Borrowing Capacity May Be Increased to
The maximum borrowing capacity that the company may be increased to according to the credit agreement.
PNC Bank [Member]
Represents the PNC Bank.
Class of Stock [Axis]
Options outstanding, weighted-average exercise price (in dollars per share)
Options outstanding, weighted-average remaining contractual life (Year)
Options exercisable, number of options exercisable (in shares)
Options exercisable, weighted-average exercise price (in dollars per share)
Upper range limit (in dollars per share)
Options outstanding, number of outstanding options (in shares)
us-gaap_LongTermPurchaseCommitmentAmount
Long-term Purchase Commitment, Amount
Exercise Price Range [Axis]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain]
Lower range limit (in dollars per share)