Document And Entity Information
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price
Intangible assets
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap_DerivativeNotionalAmount
Derivative, Notional Amount
Note To Financial Statement Details Textual
Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]
Provision for income taxes based on U.S. federal statutory tax rate, amount
Significant Accounting Policies
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Note 2 - Summary of Significant Accounting Policies
Note 3 - Intangible Assets
Note 4 - Inventories
Note 5 - Property and Equipment
Note 6 - Notes Payable
Prepaid expense and other current assets
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsPrepaidExpenseAndOtherAssets
Note 7 - Equity
Accounts receivable
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
Note 8 - Acquisition of Irwin Naturals
Revolving line of credit
Income Tax Disclosure [Text Block]
Note 10 - Income Taxes
Product returns
Note 12 - Segment Information
Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Inventories
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
Note 2 - Summary of Significant Accounting Policies - Dilutive Shares Excluded From Calculation Diluted Earnings Per Share (Details)
us-gaap_LiabilitiesCurrent
Total current liabilities
Note 3 - Intangible Assets - Schedule of Intangible Assets (Details)
Schedule of Maturities of Long-Term Debt [Table Text Block]
Schedule of Debt [Table Text Block]
Note 4 - Inventories - Summary of Inventory (Details)
Note 5 - Property and Equipment - Property and Equipment (Details)
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term
Note 6 - Notes Payable - Debt Obligations (Details)
Note 6 - Notes Payable - Maturity (Details)
Note 7 - Equity - Stock Option Activity (Details)
us-gaap_BusinessCombinationConsiderationTransferred1
Business Combination, Consideration Transferred
Note 7 - Equity - Exercise Price Range (Details)
Note 8 - Acquisition of Irwin Naturals - Assets Acquired and Liabilities Assumed (Details)
Irwin Naturals [Member]
Represents Irwin Naturals.
Note 8 - Acquisition of Irwin Naturals - Pro Forma (Details)
Note 10 - Income Taxes - Provision for Income Taxes (Details)
Note 10 - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Details)
us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred
Business Combination, Consideration Transferred, Liabilities Incurred
Note 10 - Income Taxes - Deferred Tax Assets and Liabilities (Details)
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Note 10 - Income Taxes - Operating Loss Carryforwards (Details)
Note 10 - Income Taxes - Income Tax Paid, by Individual Jurisdiction (Details)
Foreign currency translation adjustment
us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
Note 12 - Segment Information - Schedule of Segment Information (Details)
Note 12 - Segment Information - Revenue by Geographic Area (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
Diluted net income per share (in dollars per share)
us-gaap_BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTaxPerShareDiluted
Derivative [Table]
us-gaap_LongTermDebtCurrent
Current
Term loan – current portion
Comprehensive income
Net income
us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
Business Combination, Acquiree's Revenue since Acquisition Date, Actual
Business Combination, Pro Forma Information [Table Text Block]
Revenue
us-gaap_BusinessAcquisitionsProFormaRevenue
Change in Reporting Entity [Table]
Outstanding, weighted average remaining life (Year)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Outstanding, weighted average exercise price (in dollars per share)
Outstanding, weighted average exercise price (in dollars per share)
Forfeited, weighted average exercise price (in dollars per share)
Issued, 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
Exercised, weighted average exercise price (in dollars per share)
Income taxes payable
Accounts payable
Revolving Credit Facility [Member]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Outstanding, number of options (in shares)
Outstanding, number of options (in shares)
Credit Facility [Axis]
Credit Facility [Domain]
Trademarks [Member]
Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block]
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_PaymentsToAcquireProductiveAssets
Cash paid for Irwin acquisition
Indefinite-Lived Intangible Assets [Axis]
Accumulated other comprehensive loss
Indefinite-Lived Intangible Assets, Major Class Name [Domain]
us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchase of property and equipment
Brands [Member]
In reference to brands associated with the company.
Non-cash investing and financing activities
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period
Term Loans [Member]
In reference to the Term Loans.
Grantee Status [Domain]
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Cash paid for income taxes
Total cash paid for income taxes, net of refunds
Term Loan A [Member]
In relation Term Loan A
Grantee Status [Axis]
Basic weighted average shares outstanding (in shares)
us-gaap_WeightedAverageNumberOfSharesIssuedBasic
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage
Financing Arrangements [Member]
Represents financing arrangements.
CURRENT LIABILITIES:
Vesting [Axis]
Lease liability
Vesting [Domain]
Share-Based Payment Arrangement, Tranche One [Member]
us-gaap_Assets
TOTAL ASSETS
Supplemental cash flow disclosure
Share-Based Payment Arrangement, Tranche Two [Member]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount
Customer Relationships [Member]
us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Deferred tax asset
Amortization of inventory step-up
in reference to the amortization of inventory step-up
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Award Type [Domain]
Effective Income Tax Rate Reconciliation [Table]
NET INCOME
NET INCOME
Award Type [Axis]
Intangibles amortization
Intangibles, amortization
Intangibles, net of amortization of $500 and $152, respectively
Share-Based Payment Arrangement, Option [Member]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Antidilutive Securities [Axis]
Foreign Tax Jurisdiction, Other [Member]
Antidilutive Securities, Name [Domain]
ftlf_EffectiveIncomeTaxRateReconciliationFederalStateAndForeignStatutoryIncomeTaxRate
Effective Income Tax Rate Reconciliation, Federal, State, and Foreign Statutory Income Tax Rate
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to federal, state and local, and foreign income tax expense (benefit), net of federal tax expense (benefit).
Commitments and Contingencies Disclosure [Text Block]
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Accumulated depreciation
Business Combination [Text Block]
Property and equipment, net
Total
Goodwill
Goodwill
Business Combination [Table]
Equipment
Canada Revenue Agency [Member]
Tax Year 2034 [Member]
In relation to tax year 2034
Long-Term Debt, Type [Axis]
California Franchise Tax Board [Member]
Long-Term Debt, Type [Domain]
Tax Year 2036 [Member]
In relation to tax year 2036
Tax Year 2035 [Member]
In relation to tax year 2035
Tax Year 2042 [Member]
In relation to tax period 2042.
Tax Year 2041 [Member]
In relation to tax period 2041.
Tax Year 2043 [Member]
In relation to tax period 2043.
Tax Year 2038 [Member]
In relation to tax period 2038
Tax Year 2037 [Member]
In relation to tax year 2037
Tax Year 2040 [Member]
In relation to tax period 2040.
Tax Year 2039 [Member]
In relation to tax period 2039.
Derivative Instrument [Axis]
Derivative Contract [Domain]
CASH FLOWS FROM INVESTING ACTIVITIES:
NET INCOME PER SHARE
Income taxes payable
us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable
us-gaap_DeferredFinanceCostsGross
Unamortized debt issuance costs
PROVISION FOR INCOME TAXES
Provision for income taxes
Accrued expense and other current liabilities
us-gaap_IncreaseDecreaseInAccruedLiabilities
us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable
U.S. federal
Total operating expense
Total operating expense
us-gaap_DebtInstrumentTerm
Debt Instrument, Term
Income tax paid, state and local
Restricted cash
Restricted Cash
Germany
Cash and cash equivalents
Interest expense
Employee compensation and benefits
us-gaap_AllocatedShareBasedCompensationExpense
Share-Based Payment Arrangement, Expense
Amendment Flag
COMPREHENSIVE INCOME:
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive income
dei_CityAreaCode
City Area Code
Use of Estimates, Policy [Policy Text Block]
us-gaap_DebtInstrumentPeriodicPayment
Debt Instrument, Periodic Payment
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Debt Instrument, Periodic Payment, Principal
us-gaap_TreasuryStockSharesAcquired
Treasury Stock, Shares, Acquired (in shares)
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Product returns
us-gaap_IncreaseDecreaseInContractWithCustomerLiability
Common stock, shares outstanding (in shares)
Common Stock, Shares, Outstanding
Preferred stock, shares outstanding (in shares)
First-Citizens Bank & Trust Company [Member]
Represents First-Citizens Bank & Trust Company.
Current Fiscal Year End Date
us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Debt Instrument, Basis Spread on Variable Rate
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
Document Fiscal Period Focus
Document Fiscal Year Focus
us-gaap_IncreaseDecreaseInDeferredIncomeTaxes
Deferred taxes
Consolidation, Policy [Policy Text Block]
Irwin Products [Member]
Represents Irwin Products.
Products Excluding Irwin Products [Member]
Represents products excluding Irwin Products.
dei_DocumentPeriodEndDate
Document Period End Date
Addition to right-of-use assets from new operating lease liabilities
Irwin [Member]
Represents Irwin.
us-gaap_IncreaseDecreaseInPrepaidExpense
Prepaid expense and other assets
ftlf_ReturnPeriod
Return Period (Day)
Period of return.
dei_EntityFileNumber
Entity File Number
ftlf_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingNumberOfTranches
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting, Number of Tranches
The number of tranches that award will vest under share based payment arrangement.
Entity Emerging Growth Company
Write-off of deferred financing costs
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Right of use asset
ftlf_BusinessCombinationRecognizedAssetAcquiredRightOfUseAsset
Amount of right of use asset acquired in business combination and recognized at acquisition date.
dei_DocumentType
Document Type
ftlf_DebtInstrumentCovenantFixedChargeCoverageRatio
Debt Instrument, Covenant, Fixed Charge Coverage Ratio
The fixed charge coverage ratio required under the covenant of the debt instrument.
Entity Small Business
ftlf_DebtInstrumentCovenantSeniorFundedDebtToEBITDA
Debt Instrument, Covenant, Senior Funded Debt to EBITDA
Ratio of senior funded debt to EBITDA required under the covenant of the debt instrument.
dei_EntityShellCompany
Entity Shell Company
ftlf_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantDateFairValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grant Date Fair Value
Fair value of options on the grant date.
Merger and acquisition related
Document Information [Line Items]
Document Information [Table]
dei_EntityPublicFloat
Entity Public Float
ftlf_DerivativePercentageOfDebtToFixedRate
Derivative, Percentage of Debt to Fixed Rate
Percentage of debt to fixed rate by derivative.
Entity Filer Category
Debt Instrument [Axis]
ftlf_BusinessCombinationRecognizedLiabilityAssumedContractWithCustomerLiability
Product returns
Amount of contract with customer liability assumed in business combination and recognized at acquisition date.
dei_EntityCurrentReportingStatus
Entity Current Reporting Status
Debt Instrument, Name [Domain]
dei_EntityVoluntaryFilers
Entity Voluntary Filers
us-gaap_BusinessCombinationAcquisitionRelatedCosts
Business Combination, Acquisition-Related Cost, Expense
dei_EntityWellKnownSeasonedIssuer
Entity Well-known Seasoned Issuer
Award Timing Disclosures [Line Items]
Variable Rate [Domain]
Schedule of Long-Term Debt Instruments [Table]
Award Timing, How MNPI Considered [Text Block]
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable - trade
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
ecd_AwardTmgMnpiCnsdrdFlag
Award Timing MNPI Considered [Flag]
Entity Tax Identification Number
Entity Central Index Key
Depreciation and amortization
Insider Trading Policies and Procedures [Line Items]
dei_EntityRegistrantName
Entity Registrant Name
Insider Trading Policies and Procedures Adopted [Flag]
Insider Trading Policies and Procedures Adopted [Flag]
Entity [Domain]
Customer Concentration Risk [Member]
Share Repurchase Program [Member]
Information related to the Share Repurchase Program.
Legal Entity [Axis]
ftlf_StockRepurchaseProgramExpirationPeriod
Stock Repurchase Program Expiration Period
Expiration period for the purchase of an entity's own shares under a stock repurchase plan.
dei_EntityAddressAddressLine1
Entity Address, Address Line One
Supplier Concentration Risk [Member]
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
us-gaap_AmortizationOfIntangibleAssets
Amortization of Intangible Assets
dei_EntityAddressCityOrTown
Entity Address, City or Town
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
Geographic Concentration Risk [Member]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
dei_EntityAddressPostalZipCode
Entity Address, Postal Zip Code
dei_EntityAddressStateOrProvince
Entity Address, State or Province
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Concentration Risk Type [Axis]
Material Terms of Trading Arrangement [Text Block]
Concentration Risk Type [Domain]
us-gaap_AllowanceForDoubtfulAccountsReceivable
Accounts Receivable, Allowance for Credit Loss
dei_EntityCommonStockSharesOutstanding
Entity Common Stock, Shares Outstanding (in shares)
Trading Arrangements, by Individual [Table]
Revenue, Segment Benchmark [Member]
Advertising and marketing
Revenue Benchmark [Member]
Accounts Receivable [Member]
us-gaap_IncreaseDecreaseInInventories
Inventories
Trading Symbol
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Nature of Operations [Text Block]
dei_LocalPhoneNumber
Local Phone Number
Exercise of stock options (in shares)
Exercised, number of options (in shares)
us-gaap_TableTextBlock
Notes Tables
Online Sales [Member]
Information related to online sales.
us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Line of Credit Facility, Maximum Borrowing Capacity
Exercise of stock options
Formulations [Member]
Information related to formulations.
Website [Member]
Information related to website.
Tax Year 2044 [Member]
Relating to tax year 2044.
CODM Segmentation [Member]
Relating to CODM segmentation.
Selling, general and administrative
Allowance for credit losses
Stock-based compensation
Secured Overnight Financing Rate (SOFR) [Member]
Issued, number of options (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Forfeited, number of options (in shares)
Line of Credit Facility, Lender [Domain]
Lender Name [Axis]
us-gaap_LiabilitiesAndStockholdersEquity
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY
UNITED STATES
Asset Pledged as Collateral [Member]
ftlf_PaymentsForPayoffOfTermLoan
Payoff of 2023 term loans
Amount of cash outflow to payoff term loan.
Retained earnings
Debt Disclosure [Text Block]
Changes in operating assets and liabilities:
Amortization of deferred financing costs
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Long-term lease liability, net of current portion
Inventory Disclosure [Text Block]
Schedule of Inventory, Current [Table Text Block]
Inventory, Current [Table]
Subsequent Event [Table]
Lease liability – current portion
Intangibles, gross
Subsequent Events [Text Block]
Right of use asset
us-gaap_CashFlowHedgeDerivativeInstrumentLiabilitiesAtFairValue
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value
Fair Value Measurement, Policy [Policy Text Block]
Accrued expense
Amount of accrued expense and liabilities classified as other, due within one year or the normal operating cycle, if longer.
Segment Reporting, Policy [Policy Text Block]
Stock-based compensation
us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims
Share-Based Payment Arrangement, Employee [Member]
Foreign Currency Transactions and Translations Policy [Policy Text Block]
Other assets
Lessee, Leases [Policy Text Block]
Business Combination [Policy Text Block]
Intangibles, useful life (Year)
Earnings Per Share, Policy [Policy Text Block]
OPERATING EXPENSE:
Intangible Asset, Finite-Lived [Table]
Income Tax, Policy [Policy Text Block]
us-gaap_Depreciation
Depreciation
us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Stockholders' Equity Note, Stock Split, Conversion Ratio
Depreciation and amortization
us-gaap_DepreciationDepletionAndAmortization
Intangible Assets Disclosure [Text Block]
us-gaap_AssetsCurrent
Total current assets
Equity [Text Block]
Compensation Related Costs, Policy [Policy Text Block]
Common stock, $0.01 par value, 120,000 shares authorized; 9,391 and 9,210 issued and outstanding as of December 31, 2025 and 2024
Adjustments to reconcile net income to net cash provided by operating activities:
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized
Common stock, shares issued (in shares)
Common Stock, Shares, Issued
ftlf_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantsInPeriodFairValue
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value
Fair value of options granted.
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Revenue from Contract with Customer [Policy Text Block]
us-gaap_DeferredTaxAssetsValuationAllowance
Valuation allowance
Statistical Measurement [Domain]
Maximum [Member]
Provisions and reserves
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated returns, bad debt and inventory.
Minimum [Member]
Product and Service [Axis]
Product and Service [Domain]
Statistical Measurement [Axis]
Preferred stock, $0.01 par value, 10,000 shares authorized, none outstanding as of December 31, 2025 and 2024
us-gaap_DeferredTaxAssetsLiabilitiesNet
Deferred tax assets, net
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]
Cash paid for interest, net of amounts capitalized
Geographical [Axis]
Property, Plant and Equipment Disclosure [Text Block]
Geographical [Domain]
Property, Plant and Equipment [Table Text Block]
Preferred stock, shares authorized (in shares)
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Inventories, net of allowance for obsolescence of $247 and $100, respectively
Total
ftlf_PolicyTable
Preferred stock, par value (in dollars per share)
Preferred Stock, Par or Stated Value Per Share
Range One [Member]
Information related to range one.
Revenue
Range Two [Member]
Information related to range two.
Allowance for obsolescence
Inventory Valuation Reserves
Allowance for obsolescence
us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Foreign exchange loss (gain)
Finished goods
Customer [Axis]
Customer [Domain]
Term Loan B [Member]
Represents term loan B.
Components
Customer Two [Member]
Represents customer two.
ftlf_NumberOfCustomers
Number of Customers
The number of customers.
CASH FLOWS FROM OPERATING ACTIVITIES:
Customer One [Member]
Represents customer one.
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Schedule of Segment Reporting Information, by Segment [Table]
Statement [Line Items]
Allowance of doubtful accounts
Accounts receivable, net of allowance for credit losses of $9 and $41, respectively
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Additional paid-in capital
Client Relationships [Member]
Represents client relationships.
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Irwin Term Loan [Member]
Represents the Irwin Term Loan.
STOCKHOLDERS’ EQUITY:
Other expense
Property, Plant and Equipment, Policy [Policy Text Block]
The 2023 Term Loan [Member]
Represents the 2023 Term Loan.
Property, Plant and Equipment [Table]
us-gaap_NonoperatingIncomeExpense
Interest and other expense
Total other expense, net
2025 Term Loan [Member]
Represents 2025 term loan.
Segment Reporting Disclosure [Text Block]
Loss carryforwards
CURRENT ASSETS
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
CASH AND RESTRICTED CASH, BEGINNING OF PERIOD
CASH AND CASH EQUIVALENTS, END OF PERIOD
Inventory, Policy [Policy Text Block]
us-gaap_InvestmentIncomeInterest
Interest income
us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Foreign currency impact on cash
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
CHANGE IN CASH AND RESTRICTED CASH
us-gaap_Liabilities
TOTAL LIABILITIES
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by (used in) financing activities
us-gaap_OperatingIncomeLoss
OPERATING INCOME
Foreign currency impact on cash
OTHER EXPENSE (INCOME)
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
Prepaid expense and other current assets
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash used in investing activities
ftlf_StockIssuedDuringPeriodSharesIssuedForExerciseOfWarrants
Stock Issued During Period, Shares, Issued for Exercise of Warrants (in shares)
Represents the number of shares issued for the exercise of warrants.
us-gaap_DeferredTaxLiabilities
Deferred tax liabilities, net
us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets
Intangible assets
us-gaap_GrossProfit
Gross profit
Cost of goods sold
Deferred tax liability
Allowance for inventory obsolescence
Term Loans and Lines of Credit [Member]
Represents the term loans and the lines of credit.
us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
Concentration Risk, Credit Risk, Policy [Policy Text Block]
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Tangible assets
Cost of Goods and Service [Policy Text Block]
Retained Earnings [Member]
Proceeds from exercise of stock options
Foreign
us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Foreign
Additional Paid-in Capital [Member]
Common Stock [Member]
Equity Components [Axis]
us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefit
Domestic
Equity Component [Domain]
Vendor One [Member]
Related to vendor one.
Vendor Three [Member]
Related to vendor three.
Term loan – 2025 Credit Agreement
Long-Term Debt
Total balance outstanding as of December 31, 2025
Domestic
Vendor Two [Member]
Related to vendor two.
Stock, Class of Stock [Table]
ftlf_OperatingLossCarryforwardsSubjectToLimitations
Operating Loss Carryforwards, Subject to Limitations
Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws that is subject to limitations.
us-gaap_ClassOfWarrantOrRightOutstanding
Class of Warrant or Right, Outstanding
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
INCOME BEFORE INCOME TAX PROVISION
dei_IcfrAuditorAttestationFlag
ICFR Auditor Attestation Flag
Line of credit
Long-Term Line of Credit
Federal Ministry of Finance, Germany [Member]
ftlf_DeferredTaxAssetsLiabilitiesGross
Subtotal
Amount before allocation of valuation allowances of deferred tax asset (liabilities) attributable to deductible temporary differences and carryforwards.
ftlf_OperatingLossCarryforwardsMayBeFullyUtilizedPriorToExpiration
Operating Loss Carryforwards, May Be Fully Utilized Prior To Expiration
Amount of operating loss carryforwards that may be fully utilized prior to expiration.
Income Tax Authority, Name [Axis]
Income Tax Authority, Name [Domain]
Internal Revenue Service (IRS) [Member]
Income Tax Jurisdiction [Axis]
Income Tax Jurisdiction [Domain]
Disaggregation of Revenue [Table Text Block]
Domestic Tax Jurisdiction [Member]
Foreign Tax Jurisdiction [Member]
us-gaap_RepaymentsOfLongTermDebt
Payments on term loans
dei_DocumentAnnualReport
Document Annual Report
Cash and Cash Equivalents, Policy [Policy Text Block]
Receivable [Policy Text Block]
Entity Incorporation, State or Country Code
us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]
dei_DocumentTransitionReport
Document Transition Report
dei_DocumentFinStmtErrorCorrectionFlag
Document Financial Statement Error Correction [Flag]
dei_EntityInteractiveDataCurrent
Entity Interactive Data Current
ftlf_NumberOfVendors
Number of Vendors
The number of vendors.
Security Exchange Name
Title of 12(b) Security
Borrowings on term loans
Inventory-related Purchases [Member]
Related to inventory related purchases.
Capitalized transaction costs, percent
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) due to capitalized transaction costs.
Capitalized transaction costs, amount
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) due to capitalized transaction costs.
Other State and Local [Member]
Represents other state and local tax jurisdictions.
Income Tax Paid, by Individual Jurisdiction [Table Text Block]
Schedule of income tax paid by individual jurisdiction.
Adjustments related to acquired assets and liabilities, amount
Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) due to the acquisition of assets and liabilities.
Adjustments related to acquired assets and liabilities, percent
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) due to the acquisition of assets and liabilities.
Tax Period [Domain]
dei_AuditorName
Auditor Name
Tax Period [Axis]
dei_AuditorFirmId
Auditor Firm ID
dei_AuditorLocation
Auditor Location
Segments [Axis]
Segments [Domain]
Revenue from Contract with Customer, Product Returns, Sales Incentives and Other Forms of Variable Consideration [Policy Text Block]
Disclosure of accounting policy for product returns, sales incentives and other forms of variable consideration.
Dilutive effect of potential common shares (in shares)
us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Pledging Purpose [Domain]
us-gaap_SharePrice
Share Price
Antidilutive options (in shares)
Diluted weighted average common shares (in shares)
Diluted weighted average shares outstanding (in shares)
Pledging Purpose [Axis]
Non-US [Member]
Operating loss carry forwards
Operating Loss Carryforwards
Borrowings on line of credit
Summary of Operating Loss Carryforwards [Table Text Block]
Statement [Table]
Statement of Financial Position [Abstract]
Diluted (in dollars per share)
Basic weighted average common shares (in shares)
Other, percent
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Provision for income taxes, percent
Accounts Payable [Member]
Basic (in dollars per share)
Business Combination [Axis]
Difference in jurisdictional tax rates, percent
Business Combination [Domain]
True up of prior period, percent
Valuation allowance, percent
Statement of Cash Flows [Abstract]
us-gaap_ContractWithCustomerRefundLiability
Contract with Customer, Refund Liability
Statement of Stockholders' Equity [Abstract]
Income Statement [Abstract]
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
2028
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
2029
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
2030
Revenue from External Customers by Geographic Areas [Table Text Block]
us-gaap_RepaymentsOfDebt
Repayments of Debt
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
2026
us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
2027
Contract with Customer, Sales Channel [Axis]
Contract with Customer, Sales Channel [Domain]
Sales Channel, Directly to Consumer [Member]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Non-deductible expenses, percent
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Accounting Standards Update and Change in Accounting Principle [Table]
Schedule of Intangible Assets and Goodwill [Table Text Block]
Legacy FitLife [Member]
Relating to Legacy FitLife.
Asset Acquisition [Axis]
srt_StockRepurchaseProgramAuthorizedAmount1
Share Repurchase Program, Authorized, Amount
us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsForeign
Foreign tax credits applied, percent
Share Repurchase Program [Domain]
Share Repurchase Program [Axis]
State and local income taxes, net of federal income tax effect, percent
Other Commitments [Table]
Other, amount
CASH FLOWS FROM FINANCING ACTIVITIES:
Provision for income taxes based on U.S. federal statutory tax rate, percent
Difference in jurisdictional tax rates, amount
Asset Acquisition [Domain]
True up of prior period, amount
Valuation allowance, amount
Derivative liability
Series A Preferred Stock [Member]
Net assets acquired
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Pledged Status [Domain]
Pledged Status [Axis]
us-gaap_StockholdersEquity
TOTAL STOCKHOLDERS' EQUITY
Balance
Balance
Right-of-use asset
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation
Lease liabilities
Non-deductible expenses, amount
Class of Stock [Axis]
Supplier [Axis]
Class of Stock [Domain]
Supplier [Domain]
Long Term
Term loan, net of current portion and unamortized deferred finance costs
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther
Accrued expense and other current liabilities
Outstanding, weighted average exercise price (in dollars per share)
Weighted average remaining life (Year)
Number of vested options (in shares)
Interest Rate Swap [Member]
Exercisable, weighted average exercise price (in dollars per share)
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
Accounts payable and accrued expense
Upper range limit (in dollars per share)
us-gaap_DerivativeFixedInterestRate
Derivative, Fixed Interest Rate
us-gaap_IncomeTaxReconciliationTaxCreditsForeign
Foreign tax credits applied, amount
Operating expense
Represents the amount of operating expenses excluding business integration costs.
Loss on derivatives
us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax
Total number of options (in shares)
Exercise Price Range [Axis]
State and local income taxes, net of federal income tax effect, amount
Exercise Price Range [Domain]
Property and equipment
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Lower range limit (in dollars per share)
Other non-current assets
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets