OVERSEAS SHIPHOLDING GROUP INC

$ Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000149315224009567 Filed on March 11, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$97.15M	$91.16M	$91.16M
YoY Change	-18.32%	-2.54%	15.78%
Cash & Equivalents	$82.20M	$76.26M	$76.26M
Short-Term Investments	$14.95M	$14.90M	$14.90M
Other Short-Term Assets		$662.0K	$662.0K
YoY Change		71.95%	71.95%
Inventory	$6.682M	$1.860M	$1.860M
Prepaid Expenses		$5.602M
Receivables	$9.415M	$17.36M	$17.36M
Other Receivables	$2.275M	$3.140M	$3.547M
Total Short-Term Assets	$116.0M	$114.6M	$114.6M
YoY Change	-6.67%	5.76%	5.76%
LONG-TERM ASSETS
Property, Plant & Equipment	$888.3M	$665.4M	$871.7M
YoY Change	-2.63%	-4.61%	-6.56%
Goodwill
YoY Change
Intangibles	$12.27M	$13.42M
YoY Change	-27.27%	-25.53%
Long-Term Investments		$0.00	$0.00
YoY Change		-100.0%	-100.0%
Other Assets	$34.65M	$34.32M	$79.14M
YoY Change	34.82%	32.27%	21.91%
Total Long-Term Assets	$980.9M	$964.3M	$964.3M
YoY Change	-2.56%	-6.44%	-6.44%
TOTAL ASSETS
Total Short-Term Assets	$116.0M	$114.6M	$114.6M
Total Long-Term Assets	$980.9M	$964.3M	$964.3M
Total Assets	$1.097B	$1.079B	$1.079B
YoY Change	-3.01%	-5.28%	-5.28%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$48.82M	$5.172M	$25.89M
YoY Change	-14.65%	-13.25%	-7.9%
Accrued Expenses	$64.78M	$65.27M	$98.80M
YoY Change	1.54%	3.13%	10.42%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$56.21M	$43.31M	$43.31M
YoY Change	129.25%	82.47%	56.15%
Total Short-Term Liabilities	$174.1M	$169.5M	$169.5M
YoY Change	16.47%	16.15%	16.15%
LONG-TERM LIABILITIES
Long-Term Debt	$338.2M	$357.4M	$357.4M
YoY Change	-14.01%	-10.57%	-14.1%
Other Long-Term Liabilities	$10.61M	$10.37M	$118.6M
YoY Change	2.71%	-39.0%	-29.06%
Total Long-Term Liabilities	$348.8M	$367.8M	$476.0M
YoY Change	-13.58%	-11.73%	-18.39%
TOTAL LIABILITIES
Total Short-Term Liabilities	$174.1M	$169.5M	$169.5M
Total Long-Term Liabilities	$348.8M	$367.8M	$476.0M
Total Liabilities	$734.0M	$724.8M	$724.8M
YoY Change	-6.08%	-9.33%	-9.33%
SHAREHOLDERS EQUITY
Retained Earnings	-$164.5M	-$174.8M
YoY Change	-25.51%	-24.98%
Common Stock	$588.0M	$589.3M
YoY Change	-1.67%	-1.52%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$362.9M	$354.1M	$354.1M
YoY Change
Total Liabilities & Shareholders Equity	$1.097B	$1.079B	$1.079B
YoY Change	-3.01%	-5.28%	-5.28%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000075208
CY2022Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent		usd
CY2023Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent		usd
CY2023Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent		usd
CY2023Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent		usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts		usd
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts		usd
CY2023	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets		usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets		usd
CY2023	us-gaap	Extinguishment Of Debt Gain Loss Net Of Tax ExtinguishmentOfDebtGainLossNetOfTax		usd
CY2022	us-gaap	Extinguishment Of Debt Gain Loss Net Of Tax ExtinguishmentOfDebtGainLossNetOfTax		usd
CY2023	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts		usd
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts		usd
CY2022	OSG	Gain On Prepayment Of Deferred Payment Obligations GainOnPrepaymentOfDeferredPaymentObligations		usd
CY2021	OSG	Gain On Prepayment Of Deferred Payment Obligations GainOnPrepaymentOfDeferredPaymentObligations		usd
CY2023	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt		usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt		usd
CY2023	OSG	Loss On Disposal Of Vessels And Other Property Including Impairmentsnet LossOnDisposalOfVesselsAndOtherPropertyIncludingImpairmentsnet		usd
CY2022	OSG	Loss On Disposal Of Vessels And Other Property Including Impairmentsnet LossOnDisposalOfVesselsAndOtherPropertyIncludingImpairmentsnet		usd
CY2023	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities		usd
CY2021	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities		usd
CY2023	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment		usd
CY2022	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment		usd
CY2021	OSG	Purchases Of Treasury Stock PurchasesOfTreasuryStock		usd
CY2022	OSG	Payments For Repurchase Of Treasury Stock PaymentsForRepurchaseOfTreasuryStock		usd
CY2021	OSG	Payments For Repurchase Of Treasury Stock PaymentsForRepurchaseOfTreasuryStock		usd
CY2023	OSG	Extinguishment Of Debt And Prepayments ExtinguishmentOfDebtAndPrepayments		usd
CY2022	OSG	Extinguishment Of Debt And Prepayments ExtinguishmentOfDebtAndPrepayments		usd
CY2023	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt		usd
CY2022	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt		usd
CY2023	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts		usd
CY2022	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts		usd
CY2021	OSG	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Restricted Stock Awards Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteRestrictedStockAwardsValue		usd
CY2022	OSG	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Restricted Stock Awards Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteRestrictedStockAwardsValue		usd
CY2023	OSG	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Restricted Stock Awards Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteRestrictedStockAwardsValue		usd
CY2023	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities		usd
CY2022Q4	OSG	Property Plant And Equipment And Operating Lease Right Of Use Asset PropertyPlantAndEquipmentAndOperatingLeaseRightOfUseAsset		usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization		usd
CY2021	us-gaap	Accumulated Depreciation Depletion And Amortization Reclassifications From Property Plant And Equipment1 AccumulatedDepreciationDepletionAndAmortizationReclassificationsFromPropertyPlantAndEquipment1		usd
CY2021	OSG	Property Plant And Equipment Depreciation Gross PropertyPlantAndEquipmentDepreciationGross		usd
CY2022	us-gaap	Accumulated Depreciation Depletion And Amortization Reclassifications From Property Plant And Equipment1 AccumulatedDepreciationDepletionAndAmortizationReclassificationsFromPropertyPlantAndEquipment1		usd
CY2022	us-gaap	Adjustment For Amortization AdjustmentForAmortization		usd
CY2022	OSG	Property Plant And Equipment Depreciation Gross PropertyPlantAndEquipmentDepreciationGross		usd
CY2023	us-gaap	Accumulated Depreciation Depletion And Amortization Reclassifications From Property Plant And Equipment1 AccumulatedDepreciationDepletionAndAmortizationReclassificationsFromPropertyPlantAndEquipment1		usd
CY2023	OSG	Property Plant And Equipment Depreciation Gross PropertyPlantAndEquipmentDepreciationGross		usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive		usd
CY2022Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent		usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther		usd
CY2023Q4	OSG	Deferred Tax Assets Finance Lease Liability DeferredTaxAssetsFinanceLeaseLiability		usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears		usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter		usd
CY2022	OSG	Gain On Prepayment Of Deferred Payment Obligations GainOnPrepaymentOfDeferredPaymentObligations		usd
CY2021	OSG	Gain On Prepayment Of Deferred Payment Obligations GainOnPrepaymentOfDeferredPaymentObligations		usd
CY2023	dei	Document Type DocumentType	10-K
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-06479
CY2023	dei	Entity Registrant Name EntityRegistrantName	OVERSEAS SHIPHOLDING GROUP, INC.
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-2637623
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	302 Knights Run Avenue
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Tampa
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	FL
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	33602
CY2023	dei	City Area Code CityAreaCode	813
CY2023	dei	Local Phone Number LocalPhoneNumber	209-0600
CY2023	dei	Security12b Title Security12bTitle	Class A Common Stock (par value $0.01 per share)
CY2023	dei	Trading Symbol TradingSymbol	OSG
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023	dei	Entity Bankruptcy Proceedings Reporting Current EntityBankruptcyProceedingsReportingCurrent	true
CY2023Q2	dei	Entity Public Float EntityPublicFloat	292943697	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	70952360	shares
CY2023	dei	Auditor Firm AuditorFirmId	248
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	76257000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	78732000	usd
CY2023Q4	us-gaap	Marketable Securities Current MarketableSecuritiesCurrent	14900000	usd
CY2023Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	4976000	usd
CY2022Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	11364000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	17362000	usd
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	19698000	usd
CY2023Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	407000	usd
CY2022Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	1914000	usd
CY2023Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	3140000	usd
CY2022Q4	us-gaap	Other Receivables Net Current OtherReceivablesNetCurrent	5334000	usd
CY2023Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	662000	usd
CY2022Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	385000	usd
CY2023Q4	OSG	Inventories And Other Current Assets InventoriesAndOtherCurrentAssets	1860000	usd
CY2022Q4	OSG	Inventories And Other Current Assets InventoriesAndOtherCurrentAssets	2283000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	114588000	usd
CY2022Q4	us-gaap	Assets Current AssetsCurrent	108346000	usd
CY2023Q4	OSG	Property Plant And Equipment Including Other Net PropertyPlantAndEquipmentIncludingOtherNet	699032000	usd
CY2022Q4	OSG	Property Plant And Equipment Including Other Net PropertyPlantAndEquipmentIncludingOtherNet	726179000	usd
CY2023Q4	OSG	Deferred Drydock Expenditures Net Non Current DeferredDrydockExpendituresNetNonCurrent	44827000	usd
CY2022Q4	OSG	Deferred Drydock Expenditures Net Non Current DeferredDrydockExpendituresNetNonCurrent	38976000	usd
CY2023Q4	OSG	Vessels Deferred Drydock And Other Property Non Current VesselsDeferredDrydockAndOtherPropertyNonCurrent	743859000	usd
CY2022Q4	OSG	Vessels Deferred Drydock And Other Property Non Current VesselsDeferredDrydockAndOtherPropertyNonCurrent	765155000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	13417000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	18017000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	172703000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	206797000	usd
CY2022Q4	us-gaap	Marketable Securities Noncurrent MarketableSecuritiesNoncurrent	14803000	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	34317000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1139063000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	451871000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	466800000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	359062000	usd
CY2023	OSG	Voyage Expenses VoyageExpenses	28344000	usd
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	25945000	usd
CY2023Q4	us-gaap	Assets Assets	1078884000	usd
CY2022Q4	us-gaap	Assets Assets	1139063000	usd
CY2023Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	60911000	usd
CY2022Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	54906000	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	43305000	usd
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	23733000	usd
CY2023Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	65272000	usd
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	63288000	usd
CY2022Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	4000000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	169488000	usd
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	145927000	usd
CY2023Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	285000	usd
CY2022Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	175000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	357406000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	399630000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	79373000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	70233000	usd
CY2023Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	107911000	usd
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	149960000	usd
CY2022Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	16456000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	10368000	usd
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	16997000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	724831000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	799378000	usd
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	166666666	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	166666666	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	89545535	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	88297439	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	70946476	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	78297439	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	895000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	883000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	588361000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	597455000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-174825000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-233023000	usd
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	18599059	shares
CY2022Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	10000000	shares
CY2023Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	64380000	usd
CY2022Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	29040000	usd
CY2023Q4	OSG	Stockholders Equity Subtotal StockholdersEquitySubtotal	350051000	usd
CY2022Q4	OSG	Stockholders Equity Subtotal StockholdersEquitySubtotal	336275000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	4002000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	3410000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	354053000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	339685000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1078884000	usd
CY2022	OSG	Voyage Expenses VoyageExpenses	40472000	usd
CY2021	OSG	Voyage Expenses VoyageExpenses	66467000	usd
CY2023	OSG	Vessel Expenses VesselExpenses	166246000	usd
CY2022	OSG	Vessel Expenses VesselExpenses	176666000	usd
CY2021	OSG	Vessel Expenses VesselExpenses	140413000	usd
CY2023	OSG	Charter Hire Expenses CharterHireExpenses	64971000	usd
CY2022	OSG	Charter Hire Expenses CharterHireExpenses	88849000	usd
CY2021	OSG	Charter Hire Expenses CharterHireExpenses	90166000	usd
CY2023	us-gaap	Depreciation And Amortization DepreciationAndAmortization	67164000	usd
CY2022	us-gaap	Depreciation And Amortization DepreciationAndAmortization	70637000	usd
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	61823000	usd
CY2023	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	28223000	usd
CY2022	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	26985000	usd
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	24097000	usd
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-1080000	usd
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-6276000	usd
CY2023	us-gaap	Operating Expenses OperatingExpenses	354948000	usd
CY2022	us-gaap	Operating Expenses OperatingExpenses	403609000	usd
CY2021	us-gaap	Operating Expenses OperatingExpenses	388162000	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	96923000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	63191000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	-29100000	usd
CY2021	us-gaap	Extinguishment Of Debt Gain Loss Net Of Tax ExtinguishmentOfDebtGainLossNetOfTax	-8031000	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	6666000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3327000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1985000	usd
CY2023	OSG	Income Loss Before Interest Expense And Income Taxes IncomeLossBeforeInterestExpenseAndIncomeTaxes	103589000	usd
CY2022	OSG	Income Loss Before Interest Expense And Income Taxes IncomeLossBeforeInterestExpenseAndIncomeTaxes	66518000	usd
CY2021	OSG	Income Loss Before Interest Expense And Income Taxes IncomeLossBeforeInterestExpenseAndIncomeTaxes	-35146000	usd
CY2023	us-gaap	Interest Expense InterestExpense	31216000	usd
CY2022	us-gaap	Interest Expense InterestExpense	33060000	usd
CY2021	us-gaap	Interest Expense InterestExpense	29203000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	72373000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	33458000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-64349000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9919000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6894000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-18097000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	62454000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	26564000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-46252000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	78485954	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	89556195	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	90587454	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	81231761	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	91400041	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	90587454	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.80
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.30
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.51
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.77
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2023	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-6026000	usd
CY2022	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	3435000	usd
CY2021	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	9666000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	7608000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	7425000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	12767000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	102958000	usd
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.51
CY2023	us-gaap	Net Income Loss NetIncomeLoss	62454000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	26564000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-46252000	usd
CY2023	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	558000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	553000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	554000	usd
CY2023	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	1150000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	1020000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	3779000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	592000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	467000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3225000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	63046000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	27031000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-43027000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	62454000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	26564000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-46252000	usd
CY2023	us-gaap	Depreciation And Amortization DepreciationAndAmortization	67164000	usd
CY2022	us-gaap	Depreciation And Amortization DepreciationAndAmortization	70637000	usd
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	61823000	usd
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-1080000	usd
CY2023	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1142000	usd
CY2022	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1129000	usd
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2099000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	3471000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	3574000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	2232000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	8974000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6347000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-18236000	usd
CY2023	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	917000	usd
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1618000	usd
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1799000	usd
CY2023	OSG	Noncash Operating Lease Expense NoncashOperatingLeaseExpense	65751000	usd
CY2022	OSG	Noncash Operating Lease Expense NoncashOperatingLeaseExpense	89127000	usd
CY2021	OSG	Noncash Operating Lease Expense NoncashOperatingLeaseExpense	90863000	usd
CY2023	OSG	Gain On Prepayment Of Deferred Payment Obligations GainOnPrepaymentOfDeferredPaymentObligations	912000	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-5295000	usd
CY2021	OSG	Loss On Disposal Of Vessels And Other Property Including Impairmentsnet LossOnDisposalOfVesselsAndOtherPropertyIncludingImpairmentsnet	-6276000	usd
CY2023	OSG	Payments For Drydocking PaymentsForDrydocking	23138000	usd
CY2022	OSG	Payments For Drydocking PaymentsForDrydocking	17231000	usd
CY2021	OSG	Payments For Drydocking PaymentsForDrydocking	19037000	usd
CY2023	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-73074000	usd
CY2022	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-99808000	usd
CY2021	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-92634000	usd
CY2023	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-2336000	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	5112000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	384000	usd
CY2023	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-1507000	usd
CY2022	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	32000	usd
CY2021	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	1495000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	72823000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-11832000	usd
CY2023	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	30789000	usd
CY2022	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	6354000	usd
CY2021	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	7793000	usd
CY2022	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	14794000	usd
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	32128000	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-30789000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-21148000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	24335000	usd
CY2023	us-gaap	Repayments Of Debt RepaymentsOfDebt	23730000	usd
CY2022	us-gaap	Repayments Of Debt RepaymentsOfDebt	22222000	usd
CY2021	us-gaap	Repayments Of Debt RepaymentsOfDebt	33316000	usd
CY2023	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1168000	usd
CY2022	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	496000	usd
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	402000	usd
CY2023	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	2964000	usd
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	4161000	usd
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	4161000	usd
CY2023	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	58000	usd
CY2022	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	277000	usd
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2465000	usd
CY2023	OSG	Purchases Of Treasury Stock PurchasesOfTreasuryStock	35340000	usd
CY2022	OSG	Purchases Of Treasury Stock PurchasesOfTreasuryStock	29040000	usd
CY2023	OSG	Payments For Repurchase Of Treasury Stock PaymentsForRepurchaseOfTreasuryStock	11384000	usd
CY2021	OSG	Extinguishment Of Debt And Prepayments ExtinguishmentOfDebtAndPrepayments	277520000	usd
CY2021	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	321531000	usd
CY2021	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	2736000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-74644000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-56196000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	931000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-2475000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-4521000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	13434000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	78732000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	83253000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	69819000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	76257000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	78732000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	83253000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	379811000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-46252000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3225000	usd
CY2021	OSG	Adjustments To Additional Paid In Capital Taxes Withheld And Forfeitures Of Restricted Stock Awards AdjustmentsToAdditionalPaidInCapitalTaxesWithheldAndForfeituresOfRestrictedStockAwards	-402000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2232000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	338614000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	26564000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	467000	usd
CY2022	OSG	Adjustments To Additional Paid In Capital Taxes Withheld And Forfeitures Of Restricted Stock Awards AdjustmentsToAdditionalPaidInCapitalTaxesWithheldAndForfeituresOfRestrictedStockAwards	-494000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3574000	usd
CY2022	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	-29040000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	339685000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	339685000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	62454000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	62454000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	592000	usd
CY2023	OSG	Adjustments To Additional Paid In Capital Taxes Withheld And Forfeitures Of Restricted Stock Awards AdjustmentsToAdditionalPaidInCapitalTaxesWithheldAndForfeituresOfRestrictedStockAwards	-1169000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3471000	usd
CY2023	us-gaap	Dividends Paidinkind DividendsPaidinkind	4256000	usd
CY2023	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	-35340000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	11384000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	354053000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	354053000	usd
CY2023	OSG	Property Plant And Equipment Estimated Useful Life PropertyPlantAndEquipmentEstimatedUsefulLife	Vessels are recorded at cost and are depreciated to their estimated salvage value on the straight-line basis over the estimated useful lives of the vessels, which are generally 25 years (except for new articulated tug barge (“ATBs”) for which estimated useful lives of 30 years are used)
CY2023	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	951000	usd
CY2022	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1378000	usd
CY2021	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1427000	usd
CY2023	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1142000	usd
CY2022	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1129000	usd
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2099000	usd
CY2023	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p id="xdx_849_eus-gaap--ConcentrationRiskCreditRisk_zCbT56CAQWP9" style="font: 11pt Aptos; margin: 0"><span style="font-family: Times New Roman, Times, Serif"> </span></p> <table cellpadding="0" cellspacing="0" style="width: 100%"> <tr style="vertical-align: top"> <td style="width: 0.25in"><span style="font-family: Times New Roman, Times, Serif"> </span></td> <td style="font: 11pt Aptos; width: 0.25in"><span style="font-family: Times New Roman, Times, Serif; font-size: 10pt"><b>9.</b></span></td> <td style="font: 11pt Aptos; text-align: justify"><span style="font-family: Times New Roman, Times, Serif; font-size: 10pt"><i><span id="xdx_863_zIJefuTMcPoe">Concentration of credit risk</span></i> - Financial instruments that potentially subject the Company to concentrations of credit risk are voyage receivables due from charterers. With respect to voyage receivables, the Company limits its credit risk by performing ongoing credit evaluations. Voyage receivables reflected on the consolidated balance sheets as of December 31, 2023 and 2022 are net of a reserve for credit losses of $<span id="xdx_90A_eus-gaap--AllowanceForDoubtfulAccountsReceivable_iI_pn3n3_c20231231_zQBWCkRTEYG8" title="Doubtful accounts">152</span> and $<span id="xdx_90E_eus-gaap--AllowanceForDoubtfulAccountsReceivable_iI_pn3n3_c20221231_zjlIkB1U6ooh" title="Doubtful accounts">197</span>, respectively.</span></td></tr> </table> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify"><span style="font-family: Times New Roman, Times, Serif"> </span></p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify"><span style="font-family: Times New Roman, Times, Serif">During the year ended December 31, 2023, the Company had one individual customer who accounted for 10% or more of the Company’s revenues. The customer and its related percentage was Hilcorp North Slope LLC (14.3%). During the years ended <span style="background-color: white">December 31, </span>2022 and 2021, the Company had two individual customers who accounted for 10% or more of the Company’s revenues. The customers and their related percentages were Hilcorp North Slope LLC (<span id="xdx_90A_eus-gaap--ConcentrationRiskPercentage1_pid_dp_uPure_c20220101__20221231__dei--LegalEntityAxis__custom--HilcorpNorthSlopeLLCMember__us-gaap--ConcentrationRiskByTypeAxis__us-gaap--CustomerConcentrationRiskMember__us-gaap--ConcentrationRiskByBenchmarkAxis__us-gaap--SalesRevenueNetMember__srt--MajorCustomersAxis__custom--OneCustomerMember_zYgDKeP3tRm6" title="Concentration Risk, Percentage">14.2</span>%) and Valero Marketing and Supply Company (<span id="xdx_909_eus-gaap--ConcentrationRiskPercentage1_pid_dp_uPure_c20220101__20221231__dei--LegalEntityAxis__custom--ValeroMarketingAndSupplyMember__us-gaap--ConcentrationRiskByTypeAxis__us-gaap--CustomerConcentrationRiskMember__us-gaap--ConcentrationRiskByBenchmarkAxis__us-gaap--SalesRevenueNetMember__srt--MajorCustomersAxis__custom--TwoCustomerMember_z6itSvpp8Psb" title="Concentration Risk, Percentage">10.2</span>%) for the year ended December 31, 2022 and Hilcorp North Slope LLC (<span id="xdx_90B_eus-gaap--ConcentrationRiskPercentage1_pid_dp_uPure_c20210101__20211231__dei--LegalEntityAxis__custom--HilcorpNorthSlopeLLCMember__us-gaap--ConcentrationRiskByTypeAxis__us-gaap--CustomerConcentrationRiskMember__us-gaap--ConcentrationRiskByBenchmarkAxis__us-gaap--SalesRevenueNetMember__srt--MajorCustomersAxis__custom--OneCustomerMember_z7YO91wfIGKd" title="Concentration Risk, Percentage">28.2</span>%) and BP Products North America Inc. (<span id="xdx_904_eus-gaap--ConcentrationRiskPercentage1_pid_dp_uPure_c20210101__20211231__dei--LegalEntityAxis__custom--BPProductsNorthAmericaIncMember__us-gaap--ConcentrationRiskByTypeAxis__us-gaap--CustomerConcentrationRiskMember__us-gaap--ConcentrationRiskByBenchmarkAxis__us-gaap--SalesRevenueNetMember__srt--MajorCustomersAxis__custom--TwoCustomerMember_zFX88eEivg3a" title="Concentration risk, percentage">10.6</span>%) for the year ended December 31, 2021.</span></p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify"><span style="font-family: Times New Roman, Times, Serif"> </span></p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify"><span style="font-family: Times New Roman, Times, Serif">The Company’s cash and cash equivalents balances generally exceed Federal Deposit Insurance Corporation insurance limits. Cash and cash equivalents are placed in what the Company believes to be creditworthy financial institutions. In addition, certain of the Company’s money market accounts invest in U.S. Treasury securities or other obligations issued or guaranteed by the U.S. government or its agencies.</span></p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify"><span style="font-family: Times New Roman, Times, Serif"> </span></p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify"></p>
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	152000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	197000	usd
CY2023	us-gaap	Income Tax Examination Likelihood Of Unfavorable Settlement IncomeTaxExaminationLikelihoodOfUnfavorableSettlement	greater than 50
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<p id="xdx_84C_eus-gaap--UseOfEstimates_zLCwmZsmcA8e" style="font: 10pt Times New Roman, Times, Serif; margin: 0 0 0 0.5in; text-align: justify"><span style="font-family: Times New Roman, Times, Serif"> </span></p> <table cellpadding="0" cellspacing="0" style="width: 100%"> <tr style="vertical-align: top"> <td style="width: 0.25in"><span style="font-family: Times New Roman, Times, Serif"> </span></td> <td style="font: 11pt Aptos; width: 0.25in"><span style="font-family: Times New Roman, Times, Serif; font-size: 10pt"><b>11.</b></span></td> <td style="font: 11pt Aptos; text-align: justify"><span style="font-family: Times New Roman, Times, Serif; font-size: 10pt"><i><span id="xdx_86B_zMAqLUPiKOz8">Use of estimates</span></i> - The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts of assets, liabilities, equity, revenues and expenses reported in the financial statements and accompanying notes. The most significant estimates relate to the depreciation of vessels and other property, amortization of drydocking costs and internal use software, estimates used in assessing the recoverability of vessels, intangible assets and other long-lived assets, liabilities incurred relating to pension benefits, and income taxes. Actual results could differ from those estimates.</span></td></tr> </table>
CY2023	us-gaap	Net Income Loss NetIncomeLoss	62454000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	26564000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-46252000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	78485954	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	89556195	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	90587454	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	81231761	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	91400041	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	90587454	shares
CY2023	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2745807	shares
CY2022	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1843846	shares
CY2023	us-gaap	Revenues Revenues	451871000	usd
CY2022	us-gaap	Revenues Revenues	466800000	usd
CY2021	us-gaap	Revenues Revenues	359062000	usd
CY2023Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	7768000	usd
CY2022Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	9258000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1092950000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1082822000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	427508000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	385242000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	665442000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	697580000	usd
CY2023Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	33482000	usd
CY2022Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	10406000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	26940000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	26940000	usd
CY2023Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	10706000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	8856000	usd
CY2023Q4	OSG	Property Plant And Equipment And Operating Lease Right Of Use Asset PropertyPlantAndEquipmentAndOperatingLeaseRightOfUseAsset	16234000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	18084000	usd
CY2023Q4	OSG	Other Property Plant And Equipment Gross OtherPropertyPlantAndEquipmentGross	5616000	usd
CY2022Q4	OSG	Other Property Plant And Equipment Gross OtherPropertyPlantAndEquipmentGross	5578000	usd
CY2023Q4	OSG	Other Property Plant And Equipment Accumulated Depreciation And Amortization OtherPropertyPlantAndEquipmentAccumulatedDepreciationAndAmortization	5508000	usd
CY2022Q4	OSG	Other Property Plant And Equipment Accumulated Depreciation And Amortization OtherPropertyPlantAndEquipmentAccumulatedDepreciationAndAmortization	5469000	usd
CY2023Q4	OSG	Other Property Plant And Equipment Net OtherPropertyPlantAndEquipmentNet	108000	usd
CY2022Q4	OSG	Other Property Plant And Equipment Net OtherPropertyPlantAndEquipmentNet	109000	usd
CY2023Q4	OSG	Property And Other Property PropertyAndOtherProperty	699032000	usd
CY2022Q4	OSG	Property And Other Property PropertyAndOtherProperty	726179000	usd
CY2023	OSG	Weighted Average Years Of Vessel WeightedAverageYearsOfVessel	P16Y3M18D
CY2023Q4	us-gaap	Debt Instrument Collateral Amount DebtInstrumentCollateralAmount	659586000	usd
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1099187000	usd
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	308449000	usd
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	790738000	usd
CY2021	us-gaap	Property Plant And Equipment Transfers And Changes PropertyPlantAndEquipmentTransfersAndChanges	6836000	usd
CY2021	us-gaap	Depreciation Depreciation	39398000	usd
CY2021	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	39696000	usd
CY2021	us-gaap	Accumulated Depreciation Depletion And Amortization Sale Of Property Plant And Equipment1 AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1	2316000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1066327000	usd
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	345531000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	720796000	usd
CY2022	us-gaap	Property Plant And Equipment Transfers And Changes PropertyPlantAndEquipmentTransfersAndChanges	16699000	usd
CY2022	OSG	Property Plant And Equipment Additions Excluding Construction In Progress PropertyPlantAndEquipmentAdditionsExcludingConstructionInProgress	570000	usd
CY2022	us-gaap	Depreciation Depreciation	40485000	usd
CY2022	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	774000	usd
CY2022	us-gaap	Accumulated Depreciation Depletion And Amortization Sale Of Property Plant And Equipment1 AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1	774000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1082822000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	385242000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	697580000	usd
CY2023	us-gaap	Property Plant And Equipment Transfers And Changes PropertyPlantAndEquipmentTransfersAndChanges	10128000	usd
CY2023	us-gaap	Depreciation Depreciation	42266000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1092950000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	427508000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	665442000	usd
CY2023	OSG	Accrual Of Capital Expenditures AccrualOfCapitalExpenditures	1908000	usd
CY2022	OSG	Accrual Of Capital Expenditures AccrualOfCapitalExpenditures	2784000	usd
CY2021	OSG	Accrual Of Capital Expenditures AccrualOfCapitalExpenditures	1341000	usd
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	27217000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4600000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	22617000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4600000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	18017000	usd
CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4600000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	13417000	usd
CY2023Q4	us-gaap	Finite Lived Core Deposits Gross FiniteLivedCoreDepositsGross	92000000	usd
CY2022Q4	us-gaap	Finite Lived Core Deposits Gross FiniteLivedCoreDepositsGross	92000000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P3Y
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	4600000	usd
CY2023Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	400711000	usd
CY2022Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	423363000	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	43305000	usd
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	23733000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	357406000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	399630000	usd
CY2023Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0722	pure
CY2022Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0718	pure
CY2021Q3	OSG	Prepayment Of Term Loan PrepaymentOfTermLoan	16000000	usd
CY2021Q3	us-gaap	Loans Payable LoansPayable	7961000	usd
CY2021Q3	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.0775	pure
CY2021Q3	us-gaap	Debt Instrument Maturity Date DebtInstrumentMaturityDate	2028-10-01
CY2023	us-gaap	Interest And Debt Expense InterestAndDebtExpense	31177000	usd
CY2022	us-gaap	Interest And Debt Expense InterestAndDebtExpense	32739000	usd
CY2021	us-gaap	Interest And Debt Expense InterestAndDebtExpense	28682000	usd
CY2023	us-gaap	Interest Expense Debt InterestExpenseDebt	30030000	usd
CY2022Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	520000	usd
CY2022	us-gaap	Interest Expense Debt InterestExpenseDebt	31618000	usd
CY2021	us-gaap	Interest Expense Debt InterestExpenseDebt	25609000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	43183000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	54903000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	19268000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	52597000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	234375000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	404326000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Amortized Cost After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss	14900000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	148000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	14752000	usd
CY2022Q4	us-gaap	Debt Securities Held To Maturity Amortized Cost After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss	14803000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	328000	usd
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	14475000	usd
CY2021Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1000000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	5172000	usd
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	5962000	usd
CY2023Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	16891000	usd
CY2022Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	10397000	usd
CY2023Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	4256000	usd
CY2023Q4	us-gaap	Interest Payable Current InterestPayableCurrent	2322000	usd
CY2022Q4	us-gaap	Interest Payable Current InterestPayableCurrent	2437000	usd
CY2023Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	748000	usd
CY2023Q4	OSG	Accrued Drydock And Repair Costs AccruedDrydockAndRepairCosts	3988000	usd
CY2022Q4	OSG	Accrued Drydock And Repair Costs AccruedDrydockAndRepairCosts	957000	usd
CY2023Q4	OSG	Bunkers And Lubricants BunkersAndLubricants	710000	usd
CY2022Q4	OSG	Bunkers And Lubricants BunkersAndLubricants	370000	usd
CY2023Q4	OSG	Charter Revenues Received In Advance CharterRevenuesReceivedInAdvance	15752000	usd
CY2022Q4	OSG	Charter Revenues Received In Advance CharterRevenuesReceivedInAdvance	21778000	usd
CY2023Q4	OSG	Accrued Vessel Expenses AccruedVesselExpenses	8598000	usd
CY2022Q4	OSG	Accrued Vessel Expenses AccruedVesselExpenses	10888000	usd
CY2023Q4	OSG	Accrued General And Administrative Primarily Professional Fees AccruedGeneralAndAdministrativePrimarilyProfessionalFees	978000	usd
CY2022Q4	OSG	Accrued General And Administrative Primarily Professional Fees AccruedGeneralAndAdministrativePrimarilyProfessionalFees	985000	usd
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	1496000	usd
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	612000	usd
CY2023Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	60911000	usd
CY2022Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	54906000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-12000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-9000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-8000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-933000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-538000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-131000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-12544000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4630000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	15275000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	3570000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1717000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2961000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9919000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6894000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-18097000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2023	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.016	pure
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.004	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.037	pure
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.031	pure
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.056	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.009	pure
CY2023	OSG	Effective Income Tax Rate Reconciliation Equity Awards EffectiveIncomeTaxRateReconciliationEquityAwards	0.001	pure
CY2022	OSG	Effective Income Tax Rate Reconciliation Equity Awards EffectiveIncomeTaxRateReconciliationEquityAwards	0.006	pure
CY2021	OSG	Effective Income Tax Rate Reconciliation Equity Awards EffectiveIncomeTaxRateReconciliationEquityAwards	0.000	pure
CY2023	OSG	Effective Income Tax Rate Reconciliation Return To Provision EffectiveIncomeTaxRateReconciliationReturnToProvision	0.008	pure
CY2022	OSG	Effective Income Tax Rate Reconciliation Return To Provision EffectiveIncomeTaxRateReconciliationReturnToProvision	0.005	pure
CY2021	OSG	Effective Income Tax Rate Reconciliation Return To Provision EffectiveIncomeTaxRateReconciliationReturnToProvision	-0.005	pure
CY2023	OSG	Effective Income Tax Rate Reconciliation Tax Credits Subject To Tonnage Tax EffectiveIncomeTaxRateReconciliationTaxCreditsSubjectToTonnageTax	-0.029	pure
CY2022	OSG	Effective Income Tax Rate Reconciliation Tax Credits Subject To Tonnage Tax EffectiveIncomeTaxRateReconciliationTaxCreditsSubjectToTonnageTax	-0.082	pure
CY2021	OSG	Effective Income Tax Rate Reconciliation Tax Credits Subject To Tonnage Tax EffectiveIncomeTaxRateReconciliationTaxCreditsSubjectToTonnageTax	0.022	pure
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.006	pure
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.007	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.008	pure
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.137	pure
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.206	pure
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.281	pure
CY2023	OSG	Effective Income Tax Rate Reconciliation Tax Credits Subject To Tonnage Tax EffectiveIncomeTaxRateReconciliationTaxCreditsSubjectToTonnageTax	-0.029	pure
CY2022	OSG	Effective Income Tax Rate Reconciliation Tax Credits Subject To Tonnage Tax EffectiveIncomeTaxRateReconciliationTaxCreditsSubjectToTonnageTax	-0.082	pure
CY2021	OSG	Effective Income Tax Rate Reconciliation Tax Credits Subject To Tonnage Tax EffectiveIncomeTaxRateReconciliationTaxCreditsSubjectToTonnageTax	0.022	pure
CY2023Q4	OSG	Deferred Tax Liabilities Property Plants And Equipment DeferredTaxLiabilitiesPropertyPlantsAndEquipment	108740000	usd
CY2022Q4	OSG	Deferred Tax Liabilities Property Plants And Equipment DeferredTaxLiabilitiesPropertyPlantsAndEquipment	119987000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	9107000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	8695000	usd
CY2023Q4	OSG	Deferred Tax Liabilities Operating Lease Rightofuse Assets DeferredTaxLiabilitiesOperatingLeaseRightofuseAssets	39720000	usd
CY2022Q4	OSG	Deferred Tax Liabilities Operating Lease Rightofuse Assets DeferredTaxLiabilitiesOperatingLeaseRightofuseAssets	50792000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	8000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	157567000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	179482000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	52462000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	67686000	usd
CY2023Q4	OSG	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	39822000	usd
CY2022Q4	OSG	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	50622000	usd
CY2022Q4	OSG	Deferred Tax Assets Finance Lease Liability DeferredTaxAssetsFinanceLeaseLiability	4662000	usd
CY2023Q4	OSG	Deferred Tax Assets Tax Deferred Expense Employee Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseEmployeeCompensationAndBenefits	-654000	usd
CY2022Q4	OSG	Deferred Tax Assets Tax Deferred Expense Employee Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseEmployeeCompensationAndBenefits	-212000	usd
CY2023Q4	OSG	Deferred Tax Assets Financing And Professional Fees DeferredTaxAssetsFinancingAndProfessionalFees	6517000	usd
CY2022Q4	OSG	Deferred Tax Assets Financing And Professional Fees DeferredTaxAssetsFinancingAndProfessionalFees	8710000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	132000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	79000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	98279000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	131547000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	20085000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	22298000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	78194000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	109249000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	79373000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	70233000	usd
CY2022Q4	OSG	Deferred Tax Liabilities For Finance Lease Rightofuse Assets DeferredTaxLiabilitiesForFinanceLeaseRightofuseAssets	4122000	usd
CY2023Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	132643000	usd
CY2023	OSG	Operating Loss Carryforwards Expiration Period OperatingLossCarryforwardsExpirationPeriod	2034
CY2023Q4	OSG	Operating Loss Carryforwards State OperatingLossCarryforwardsState	568487	usd
CY2023	us-gaap	Income Tax Examination Description IncomeTaxExaminationDescription	These U.S. state net operating loss carryforwards expire in various years from December 31, 2024 through December 31, 2041.
CY2023Q4	OSG	Disallowed Interest Carryforwards Value DisallowedInterestCarryforwardsValue	30129000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	172703000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	20085000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	22298000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1022000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	393000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1751000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1035000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	834000	usd
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	813000	usd
CY2023	OSG	Unrecognized Tax Benefits Increases Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromPriorPeriodTaxPositions	-307000	usd
CY2022	OSG	Unrecognized Tax Benefits Increases Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromPriorPeriodTaxPositions	201000	usd
CY2021	OSG	Unrecognized Tax Benefits Increases Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesDecreasesResultingFromPriorPeriodTaxPositions	21000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	728000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1035000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	834000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	728000	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1035000	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	834000	usd
CY2023Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	285000	usd
CY2022Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	175000	usd
CY2023Q2	OSG	Stock Repurchase Program Increase In Share Repurchase Authorized Amount StockRepurchaseProgramIncreaseInShareRepurchaseAuthorizedAmount	10000000	usd
CY2023Q4	OSG	Stock Repurchase Program Increase In Share Repurchase Authorized Amount StockRepurchaseProgramIncreaseInShareRepurchaseAuthorizedAmount	25000000	usd
CY2023Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	45000000	usd
CY2023	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	8599059	shares
CY2023	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	35339000	usd
CY2023	OSG	Stock Repurchased During Period Per Share Amount StockRepurchasedDuringPeriodPerShareAmount	4.11
CY2023Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	25000	shares
CY2022Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	5000000	shares
CY2022Q4	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	14740000	usd
CY2022Q4	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	5000000	shares
CY2022Q4	OSG	Stock Repurchased During Period Per Share Amount StockRepurchasedDuringPeriodPerShareAmount	2.95
CY2023Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Rights ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRights	i.) 20% vests on the first anniversary of the grant date, ii.) 30% vests on the second anniversary of the grant date, and iii.) 50% vests on the third anniversary of the grant date.
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	4986	usd
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	2720	usd
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	2131	usd
CY2023	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2	P4Y2M4D
CY2023Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	2.67
CY2022Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	2.67
CY2021Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	2.67
CY2023Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	4388000	usd
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.137	pure
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.206	pure
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	4002000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	3410000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	4002000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	3410000	usd
CY2023	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	751000	usd
CY2022	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	748000	usd
CY2021	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	387000	usd
CY2023	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-1331000	usd
CY2022	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-1322000	usd
CY2021	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-684000	usd
CY2023	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-580000	usd
CY2022	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-574000	usd
CY2021	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-297000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	5440000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax	5023000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	124000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	1021000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	206797000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	173183000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	213248000	usd
CY2023Q4	OSG	Property Subject To Or Available For Operating Lease Number Of Vessels PropertySubjectToOrAvailableForOperatingLeaseNumberOfVessels	8	vessels
CY2023	us-gaap	Lessee Operating Lease Description LesseeOperatingLeaseDescription	The Company holds options for seven of the vessels chartered-in. For one of these vessels, the Company has two option periods of five years each and, after the five-year optional periods are exercised, can extend the lease for five one-year optional periods. For the remaining six vessels, the options can be exercised for three or five years, which are available indefinitely. The lease payments for the charters-in are fixed throughout the option periods and the options are on a vessel-by-vessel basis that can be exercised individually.
CY2023	us-gaap	Operating Lease Payments OperatingLeasePayments	46882	usd
CY2023Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	5602000	usd
CY2023Q4	us-gaap	Other Operating Income OtherOperatingIncome	912000	usd
CY2023	OSG	Deferred Payment Obligation DeferredPaymentObligation	8069	usd
CY2023	us-gaap	Operating Lease Expense OperatingLeaseExpense	64971000	usd
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	88849000	usd
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	90166000	usd
CY2023	us-gaap	Sublease Income SubleaseIncome	183699000	usd
CY2022	us-gaap	Sublease Income SubleaseIncome	166530000	usd
CY2021	us-gaap	Sublease Income SubleaseIncome	75516000	usd
CY2023	OSG	Noncash Operating Activities For Obtaining Operating Rightofuse Assets And Liabilities NoncashOperatingActivitiesForObtainingOperatingRightofuseAssetsAndLiabilities	20203000	usd
CY2023	OSG	Noncash Operating Activities Reclassification From Finance And Operating Lease NoncashOperatingActivitiesReclassificationFromFinanceAndOperatingLease	18363	usd
CY2022	OSG	Noncash Operating Activities For Obtaining Operating Rightofuse Assets And Liabilities NoncashOperatingActivitiesForObtainingOperatingRightofuseAssetsAndLiabilities	132231000	usd
CY2021	OSG	Noncash Operating Activities For Obtaining Operating Rightofuse Assets And Liabilities NoncashOperatingActivitiesForObtainingOperatingRightofuseAssetsAndLiabilities	15713000	usd
CY2023	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	1850000	usd
CY2022	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	2949000	usd
CY2021	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	2949000	usd
CY2023	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	917000	usd
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1618000	usd
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1799000	usd
CY2022Q3	us-gaap	Lessee Operating Lease Description LesseeOperatingLeaseDescription	lease term of five years and two months, expiring in October 2028.
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2088000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y1M6D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P3Y9M18D
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P2Y1M6D
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.086	pure
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.086	pure
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.065	pure
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P6Y1M6D
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P7Y1M6D
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.073	pure
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.073	pure
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	371383000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	226505000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	88998000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	578000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	687464000	usd
CY2023	us-gaap	Multiemployer Plan Employer Contribution Cost MultiemployerPlanEmployerContributionCost	3765000	usd
CY2022	us-gaap	Multiemployer Plan Employer Contribution Cost MultiemployerPlanEmployerContributionCost	3920000	usd
CY2021	us-gaap	Multiemployer Plan Employer Contribution Cost MultiemployerPlanEmployerContributionCost	3765000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	34218000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	34313000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	34218000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	34313000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	37094000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Fair Value Of Plan Assets DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets	35068000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0650	pure
CY2023Q4	OSG	Increase Declining To Ultimate Trend Rate IncreaseDecliningToUltimateTrendRate	0.0475	pure
CY2023Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	37094000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	35068000	usd
CY2023	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3170000	usd
CY2022	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3304000	usd
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	2415000	usd
CY2023Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	6661000	usd
CY2022Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	7177000	usd
CY2023	us-gaap	Investment Income Interest InvestmentIncomeInterest	3959000	usd
CY2022	us-gaap	Investment Income Interest InvestmentIncomeInterest	840000	usd
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	5000	usd
CY2023	OSG	Increase Decrease In Investment IncreaseDecreaseInInvestment	611000	usd
CY2022	OSG	Increase Decrease In Investment IncreaseDecreaseInInvestment	60000	usd
CY2021	OSG	Increase Decrease In Investment IncreaseDecreaseInInvestment	-241000	usd
CY2023	us-gaap	Investment Income Net InvestmentIncomeNet	4570000	usd
CY2022	us-gaap	Investment Income Net InvestmentIncomeNet	900000	usd
CY2021	us-gaap	Investment Income Net InvestmentIncomeNet	-236000	usd
CY2023	OSG	Pension And Post Retirement Items PensionAndPostRetirementItems	1290000	usd
CY2022	OSG	Pension And Post Retirement Items PensionAndPostRetirementItems	2582000	usd
CY2021	OSG	Pension And Post Retirement Items PensionAndPostRetirementItems	2157000	usd
CY2023	OSG	Gain On Prepayment Of Deferred Payment Obligations GainOnPrepaymentOfDeferredPaymentObligations	912000	usd
CY2023	OSG	Miscellaneousnet Miscellaneousnet	-106000	usd
CY2022	OSG	Miscellaneousnet Miscellaneousnet	-155000	usd
CY2021	OSG	Miscellaneousnet Miscellaneousnet	64000	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	6666000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3327000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1985000	usd
CY2023	dei	Auditor Name AuditorName	GRANT THORNTON LLP
CY2023	dei	Auditor Location AuditorLocation	Tampa, Florida

Files In Submission

Name	View Source	Status
0001493152-24-009567-index-headers.html	Edgar Link	pending
0001493152-24-009567-index.html	Edgar Link	pending
0001493152-24-009567.txt	Edgar Link	pending
0001493152-24-009567-xbrl.zip	Edgar Link	pending
ex21.htm	Edgar Link	pending
ex23-1.htm	Edgar Link	pending
ex31-1.htm	Edgar Link	pending
ex31-2.htm	Edgar Link	pending
ex32.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
form10-k.htm	Edgar Link	pending
form10-k_001.jpg	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
osg-20231231.xsd	Edgar Link	pending
R1.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
osg-20231231_cal.xml	Edgar Link	unprocessable
osg-20231231_def.xml	Edgar Link	unprocessable
osg-20231231_lab.xml	Edgar Link	unprocessable
osg-20231231_pre.xml	Edgar Link	unprocessable
form10-k_htm.xml	Edgar Link	completed
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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OVERSEAS SHIPHOLDING GROUP INC

2024 Q1 Form 10-K Financial Statement

#000149315224009567 Filed on March 11, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission