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[Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Current Fiscal Year End Date Current Fiscal Year End Date Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] $84 million revolving tranche under the Flex Enterprise $150 Million Facility $84 Million Tranche, $150 Million Term Loan Facility [Member] $84 Million Tranche, $150 Million Term Loan Facility Front Ocean Management AS Front Ocean Management AS [Member] Front Ocean Management AS Credit adjustment spread Credit Adjustment Spread Credit Adjustment Spread Derivative [Line Items] Derivative [Line Items] Contributed Surplus Contributed Surplus Contributed Surplus Receivables due from related parties Increase (Decrease) in Due from Related Parties, Current Sale & Leaseback Sale and Leaseback [Abstract] Sale and Leaseback Dividends paid (in dollars per share) Common Stock, Dividends, Per Share, Declared Level 2 Fair Value, Inputs, Level 2 [Member] Entity File Number Entity File Number $180 million revolving tranche under the $270 Million Facility $180 Million Tranche, $270 Million Term Loan Facility [Member] $180 Million Tranche, $270 Million Term Loan Facility Share-based payments Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity 3 years Lessor, Operating Lease, Payment to be Received, Year Three Current portion of long-term debt Long-Term Debt, Current Maturities Deferred charter revenue Time Charter [Member] Time Charter [Member] Dividends [Domain] Dividends [Domain] Shares issued (in shares) Common Stock, Shares, Issued Subsequent Event Type [Axis] Subsequent Event Type [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Treasury stock (in shares) Treasury Stock, Common, Shares Treasury shares at cost (June 30, 2026: 427,949 (December 31, 2025: 427,949)) Treasury 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Payment to be Received, Year Four Fair value, share options value Share-Based Compensation Arrangement By Share-Based Payment Award Fair Value Assumptions, Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award Fair Value Assumptions, Fair Value Inventory Inventory, Net All Award Types Award Type [Domain] Fair value of financial assets and liabilities Fair Value Disclosures [Text Block] Supplemental Information Supplemental Cash Flow Information [Abstract] Nonvested share options, weighted average exercise price (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Option, Nonvested, Weighted Average Exercise Price Estimated expected life Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term 2 years Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Two Related Party Transactions [Abstract] Operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Restricted cash Restricted Cash Other receivables Other Receivables, Net, Current Total Lessor, Operating Lease, Payment to be Received Cash, cash equivalents and restricted cash Cash, Cash Equivalents, and Short-Term Investments Weighted average number of ordinary shares (in shares) Weighted Average Number of Shares Outstanding, Diluted Income tax paid Income Tax Paid, before Refund Received Dividends paid (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid $270 million facility $270 Million Facility [Member] $270 Million Facility Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Related Party Transaction [Line Items] Related Party Transaction [Line Items] Schedule of other current assets Schedule of Other Current Assets [Table Text Block] Proceeds from revolving credit facility Proceeds from Lines of Credit $90 million term tranche under the $270 Million Facility $90 Million Tranche, $270 Million 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Ltd Seatankers Management Co Ltd [Member] Seatankers Management Co Ltd Accumulated depreciation Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization [Roll Forward] 4 years Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Four Share-based payments Share-based Payment Arrangement, Noncash Expense (Income) Share-based Payment Arrangement, Noncash Expense (Income) Total non-current assets Assets, Noncurrent Statement [Line Items] Statement [Line Items] Total assets Assets SFL UK Management Ltd SFL UK Management Ltd [Member] SFL UK Management Ltd Term of award, non-vested share options Share-Based Compensation Arrangement By Share-Based Payment Award Fair Value Assumptions Risk Free Interest Rate Period Share-Based Compensation Arrangement By Share-Based Payment Award Fair Value Assumptions Risk Free Interest Rate Period Flex Constellation $180 Million Facility Flex Constellation $180 Million Facility [Member] Flex Constellation $180 Million Facility Revenues Revenues [Abstract] Flex Endeavour $160 Million Sale and Leaseback Flex Endeavour $160 Million Sale and Leaseback [Member] Flex Endeavour $160 Million Sale and Leaseback Assets Assets [Member] $150 million revolving tranche under the $290 Million Facility $150 Million Tranche, $290 Million Term Loan Facility [Member] $150 Million Tranche, $290 Million Term Loan Facility Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Interest expense Interest Expense, Nonoperating