$INSW
International Seaways, Inc. Stock $insw

$insw Overview Financials Valuation SEC Filings Company Website

2023 Q1 Form 10-K Financial Statement

#000155837023002247 Filed on February 28, 2023

Income Statement

Concept	2023 Q1	2022 Q4	2022 Q3
Revenue	$287.1M	$338.2M	$236.8M
YoY Change	182.94%	257.2%	179.23%
Cost Of Revenue	$70.27M	$71.84M	$65.75M
YoY Change	2.32%	-6.23%	-10.6%
Gross Profit	$216.9M	$266.3M	$171.1M
YoY Change	560.97%	1374.96%	1418.52%
Gross Profit Margin	75.53%	78.76%	72.24%
Selling, General & Admin	$12.36M	$15.73M	$14.73M
YoY Change	-2.13%	26.06%	42.44%
% of Gross Profit	5.7%	5.91%	8.61%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$29.55M	$28.40M	$27.89M
YoY Change	9.44%	2.47%	8.06%
% of Gross Profit	13.63%	10.67%	16.3%
Operating Expenses	$41.91M	$44.13M	$42.46M
YoY Change	5.75%	11.7%	17.66%
Operating Profit	$185.3M	$222.2M	$128.6M
YoY Change	-3392.43%	-1135.63%	-304.74%
Interest Expense	$16.95M	-$16.67M	-$15.22M
YoY Change	33.02%	152.27%	-243.1%
% of Operating Profit	9.15%	-7.5%	-11.84%
Other Income/Expense, Net	$4.281M	$1.926M	$651.0K
YoY Change	-1994.25%	-130.13%	-676.11%
Pretax Income	$172.6M	$218.5M	$113.4M
YoY Change	-1428.24%	-760.94%	-267.2%
Income Tax	-$1.000K	$25.00K	$7.000K
% Of Pretax Income	0.0%	0.01%	0.01%
Net Earnings	$172.6M	$218.4M	$113.4M
YoY Change	-1427.84%	-742.59%	-268.41%
Net Earnings / Revenue	60.12%	64.59%	47.89%
Basic Earnings Per Share	$3.51		$2.30
Diluted Earnings Per Share	$3.47	$4.36	$2.280M
COMMON SHARES
Basic Shares Outstanding	49.12M		49.70M
Diluted Shares Outstanding	49.65M		49.74M

Balance Sheet

Concept	2023 Q1	2022 Q4	2022 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$261.2M	$323.7M	$254.5M
YoY Change	250.38%	230.75%	133.67%
Cash & Equivalents	$156.2M	$243.7M	$174.5M
Short-Term Investments	$105.0M	$80.00M	$80.00M
Other Short-Term Assets	$41.09M	$15.98M	$16.18M
YoY Change	-1.61%	35.91%	0.32%
Inventory	$698.0K	$531.0K	$873.0K
Prepaid Expenses
Receivables	$248.0M	$289.8M	$230.1M
Other Receivables	$11.56M	$12.58M	$7.891M
Total Short-Term Assets	$562.6M	$642.6M	$509.6M
YoY Change	128.25%	186.24%	122.72%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.776B	$1.680B	$1.892B
YoY Change	0.13%	-6.81%	-0.91%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$34.08M	$36.41M	$38.11M
YoY Change	-81.42%	-79.81%	-78.52%
Other Assets	$9.441M	$9.220M	$20.69M
YoY Change	-21.56%	19.74%	480.25%
Total Long-Term Assets	$2.009B	$1.973B	$1.950B
YoY Change	-5.24%	-7.05%	-11.87%
TOTAL ASSETS
Total Short-Term Assets	$562.6M	$642.6M	$509.6M
Total Long-Term Assets	$2.009B	$1.973B	$1.950B
Total Assets	$2.572B	$2.615B	$2.460B
YoY Change	8.66%	11.44%	0.74%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$53.20M	$1.826M	$45.59M
YoY Change	-5.2%	13.63%	-7.12%
Accrued Expenses	$430.0K	$1.596M	$8.323M
YoY Change	-96.01%	-80.98%	23.96%
Deferred Revenue		$2.962M
YoY Change		739.09%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$155.5M	$162.9M	$167.0M
YoY Change	-12.82%	-8.88%	-24.38%
Total Short-Term Liabilities	$227.5M	$257.4M	$220.9M
YoY Change	-7.26%	9.71%	-21.38%
LONG-TERM LIABILITIES
Long-Term Debt	$777.2M	$860.6M	$900.5M
YoY Change	-17.59%	-7.09%	1.45%
Other Long-Term Liabilities	$1.877M	$1.875M	$9.681M
YoY Change	-7.22%	-18.05%	-23.78%
Total Long-Term Liabilities	$779.0M	$862.5M	$910.2M
YoY Change	-17.57%	-7.12%	1.09%
TOTAL LIABILITIES
Total Short-Term Liabilities	$227.5M	$257.4M	$220.9M
Total Long-Term Liabilities	$779.0M	$862.5M	$910.2M
Total Liabilities	$1.014B	$1.128B	$1.131B
YoY Change	-15.56%	-4.15%	-5.52%
SHAREHOLDERS EQUITY
Retained Earnings	$52.87M	-$21.45M
YoY Change	-112.52%	-94.76%
Common Stock	$1.502B	$1.502B
YoY Change	-5.48%	-5.61%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.557B	$1.488B	$1.329B
YoY Change
Total Liabilities & Shareholders Equity	$2.572B	$2.615B	$2.460B
YoY Change	8.66%	11.44%	0.74%

Cashflow Statement

Concept	2023 Q1	2022 Q4	2022 Q3
OPERATING ACTIVITIES
Net Income	$172.6M	$218.4M	$113.4M
YoY Change	-1427.84%	-742.59%	-268.41%
Depreciation, Depletion And Amortization	$29.55M	$28.40M	$27.89M
YoY Change	9.44%	2.47%	8.06%
Cash From Operating Activities	$220.8M	$181.6M	$91.36M
YoY Change	-1216.33%	-768.65%	-444.54%
INVESTING ACTIVITIES
Capital Expenditures	$67.25M	$28.41M	-$33.97M
YoY Change	2141.53%	-182.7%	67.63%
Acquisitions
YoY Change
Other Investing Activities	-$4.979M	$19.18M	-$78.54M
YoY Change	-120.98%	-62.75%	-149.88%
Cash From Investing Activities	-$72.23M	-$9.228M	-$112.5M
YoY Change	393.04%	-153.81%	-182.0%
FINANCING ACTIVITIES
Cash Dividend Paid	$98.30M	$55.00M	$6.000M
YoY Change	3176.67%	1733.33%	100.0%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net	$137.4M
YoY Change	289.55%
Cash From Financing Activities	-217.8M	-104.2M	-35.04M
YoY Change	-2061.91%	340.45%	-68.62%
NET CHANGE
Cash From Operating Activities	220.8M	181.6M	91.36M
Cash From Investing Activities	-72.23M	-9.228M	-112.5M
Cash From Financing Activities	-217.8M	-104.2M	-35.04M
Net Change In Cash	-69.20M	68.22M	-56.19M
YoY Change	196.61%	-302.68%	5675.44%
FREE CASH FLOW
Cash From Operating Activities	$220.8M	$181.6M	$91.36M
Capital Expenditures	$67.25M	$28.41M	-$33.97M
Free Cash Flow	$153.6M	$153.2M	$125.3M
YoY Change	-774.14%	2030.32%	-2104.53%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0001679049
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2022	dei	Amendment Flag AmendmentFlag	false
CY2022Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1
CY2022	dei	City Area Code CityAreaCode	212
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	8393000
CY2022	dei	Local Phone Number LocalPhoneNumber	578-1600
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost Credit Amortization Of Gain Loss Statement Of Income Or Comprehensive Income Extensible List DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationOfGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherNonoperatingIncomeExpense
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OperatingLeaseRightOfUseAsset
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2022	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OperatingLeaseLiabilityCurrent
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OperatingLeaseLiabilityNoncurrent
CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OperatingLeaseLiability
CY2022	us-gaap	Stock Repurchase Program Period In Force1 StockRepurchaseProgramPeriodInForce1	P24M
CY2021Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	50674393
CY2022	dei	Document Type DocumentType	10-K
CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-12-31
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity File Number EntityFileNumber	1-37836-1
CY2021Q2	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
CY2021Q3	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
CY2022	dei	Entity Registrant Name EntityRegistrantName	INTERNATIONAL SEAWAYS, INC.
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	1T
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-0467117
CY2020	insw	Number Of Vessels In Construction NumberOfVesselsInConstruction	0
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	600 Third Avenue
CY2022	dei	Entity Address Address Line2 EntityAddressAddressLine2	39th Floor
CY2022	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	New York
CY2022	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost Credit Interest Cost Statement Of Income Or Comprehensive Income Extensible List DefinedBenefitPlanNetPeriodicBenefitCostCreditInterestCostStatementOfIncomeOrComprehensiveIncomeExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherNonoperatingIncomeExpense
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost Credit Expected Return Loss Statement Of Income Or Comprehensive Income Extensible List DefinedBenefitPlanNetPeriodicBenefitCostCreditExpectedReturnLossStatementOfIncomeOrComprehensiveIncomeExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherNonoperatingIncomeExpense
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost Credit Amortization Of Prior Service Cost Credit Statement Of Income Or Comprehensive Income Extensible List DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationOfPriorServiceCostCreditStatementOfIncomeOrComprehensiveIncomeExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherNonoperatingIncomeExpense
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	10016
CY2021Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	44964000
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2022	dei	Entity Shell Company EntityShellCompany	false
CY2022Q2	dei	Entity Public Float EntityPublicFloat	1036610000
CY2023Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	49121352
CY2022	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2022	dei	Auditor Location AuditorLocation	New York, NY
CY2022	dei	Auditor Firm AuditorFirmId	42
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	243744000
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	97883000
CY2022Q4	us-gaap	Short Term Investments ShortTermInvestments	80000000
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	261000
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	31000
CY2022Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	279567000
CY2021Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	100137000
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	289775000
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	107096000
CY2022Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	12583000
CY2021Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	5651000
CY2022Q4	us-gaap	Inventory Net InventoryNet	531000
CY2021Q4	us-gaap	Inventory Net InventoryNet	2110000
CY2022Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	8995000
CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	11759000
CY2022Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	6987000
CY2022Q4	us-gaap	Assets Current AssetsCurrent	642615000
CY2021Q4	us-gaap	Assets Current AssetsCurrent	224499000
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1050000
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1680010000
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1802850000
CY2022Q4	insw	Property Plant And Equipment In Construction PropertyPlantAndEquipmentInConstruction	123940000
CY2021Q4	insw	Property Plant And Equipment In Construction PropertyPlantAndEquipmentInConstruction	49291000
CY2022Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	65611000
CY2021Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	55753000
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	8471000
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	23168000
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	44391000
CY2022Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	36414000
CY2021Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	180331000
CY2022Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	4662000
CY2021Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	1296000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	842000
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	9220000
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	7700000
CY2022Q4	us-gaap	Assets Assets	2615334000
CY2021Q4	us-gaap	Assets Assets	2346780000
CY2022Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	51069000
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1596000
CY2022	insw	Vessel Expenses VesselExpenses	240674000
CY2022Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	41870000
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	162854000
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	178715000
CY2021Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	2539000
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	257389000
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	234611000
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	7740000
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	12522000
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	860578000
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	926270000
CY2021Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	757000
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1875000
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2288000
CY2022Q4	us-gaap	Liabilities Liabilities	1127582000
CY2021Q4	us-gaap	Liabilities Liabilities	1176448000
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000
CY2021Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2022Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	49120648
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	49120648
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	49612019
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	49612019
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	1502235000
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	1591446000
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-21447000
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-409338000
CY2022Q4	insw	Stockholders Equity Subtotal StockholdersEquitySubtotal	1480788000
CY2021Q4	insw	Stockholders Equity Subtotal StockholdersEquitySubtotal	1182108000
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	6964000
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-12360000
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1487752000
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	1169748000
CY2021Q4	us-gaap	Minority Interest MinorityInterest	584000
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1487752000
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1170332000
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2615334000
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2346780000
CY2022	insw	Equity Method Investment Summarized Financial Information Shipping Pool Revenue EquityMethodInvestmentSummarizedFinancialInformationShippingPoolRevenue	210409000
CY2021	insw	Equity Method Investment Summarized Financial Information Shipping Pool Revenue EquityMethodInvestmentSummarizedFinancialInformationShippingPoolRevenue	72557000
CY2020	insw	Equity Method Investment Summarized Financial Information Shipping Pool Revenue EquityMethodInvestmentSummarizedFinancialInformationShippingPoolRevenue	194258000
CY2022	us-gaap	Revenues Revenues	864665000
CY2021	us-gaap	Revenues Revenues	272546000
CY2020	us-gaap	Revenues Revenues	421648000
CY2022	insw	Voyage Expenses VoyageExpenses	10955000
CY2021	insw	Voyage Expenses VoyageExpenses	16686000
CY2020	insw	Voyage Expenses VoyageExpenses	19643000
CY2021	insw	Vessel Expenses VesselExpenses	183057000
CY2020	insw	Vessel Expenses VesselExpenses	128373000
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	32132000
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	23934000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-5531000
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	30114000
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	110388000
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	86674000
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	74343000
CY2022	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	46351000
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	33235000
CY2020	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	28976000
CY2022	us-gaap	Recapitalization Costs RecapitalizationCosts	1158000
CY2021	us-gaap	Recapitalization Costs RecapitalizationCosts	110000
CY2020	us-gaap	Recapitalization Costs RecapitalizationCosts	232000
CY2021	insw	Asset Acquisition Transaction Cost AssetAcquisitionTransactionCost	50740000
CY2022	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	19647000
CY2021	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	9753000
CY2020	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-100087000
CY2022	us-gaap	Costs And Expenses CostsAndExpenses	422011000
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	384683000
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	381768000
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	442654000
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	-112137000
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	39880000
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	714000
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	21838000
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	4119000
CY2022	insw	Operating Income Loss Including Equity In Income Loss Of Affiliated Companies OperatingIncomeLossIncludingEquityInIncomeLossOfAffiliatedCompanies	443368000
CY2021	insw	Operating Income Loss Including Equity In Income Loss Of Affiliated Companies OperatingIncomeLossIncludingEquityInIncomeLossOfAffiliatedCompanies	-90299000
CY2020	insw	Operating Income Loss Including Equity In Income Loss Of Affiliated Companies OperatingIncomeLossIncludingEquityInIncomeLossOfAffiliatedCompanies	43999000
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2332000
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5947000
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-12817000
CY2022	insw	Loss Before Interest Expense Reorganization Items And Taxes LossBeforeInterestExpenseReorganizationItemsAndTaxes	445700000
CY2021	insw	Loss Before Interest Expense Reorganization Items And Taxes LossBeforeInterestExpenseReorganizationItemsAndTaxes	-96246000
CY2020	insw	Loss Before Interest Expense Reorganization Items And Taxes LossBeforeInterestExpenseReorganizationItemsAndTaxes	31182000
CY2022	us-gaap	Interest Expense InterestExpense	57721000
CY2021	us-gaap	Interest Expense InterestExpense	36796000
CY2020	us-gaap	Interest Expense InterestExpense	36712000
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	387979000
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-133042000
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-5530000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	88000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1618000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1000
CY2022	us-gaap	Profit Loss ProfitLoss	387891000
CY2021	us-gaap	Profit Loss ProfitLoss	-134660000
CY2020	us-gaap	Profit Loss ProfitLoss	-5531000
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1168000
CY2022	us-gaap	Net Income Loss NetIncomeLoss	387891000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-133492000
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49381459
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	38407007
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	28372375
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49844904
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	10529000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	5631000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	38407007
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	28372375
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.85
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.48
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.20
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	7.77
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.48
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.20
CY2022	us-gaap	Profit Loss ProfitLoss	387891000
CY2021	us-gaap	Profit Loss ProfitLoss	-134660000
CY2020	us-gaap	Profit Loss ProfitLoss	-5531000
CY2022	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	21775000
CY2021	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	19235000
CY2020	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	-12366000
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	335000
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	-54000
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	-46000
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-2116000
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	964000
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	277000
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19324000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	20253000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-12043000
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	407215000
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-114407000
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-17574000
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-1168000
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	407215000
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-113239000
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-17574000
CY2022	us-gaap	Profit Loss ProfitLoss	387891000
CY2021	us-gaap	Profit Loss ProfitLoss	-134660000
CY2020	us-gaap	Profit Loss ProfitLoss	-5531000
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	110388000
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	86674000
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	74343000
CY2022	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	1697000
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	3497000
CY2020	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	103022000
CY2022	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	5224000
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2313000
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2898000
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	842000
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2428000
CY2022	insw	Deferred Financing Costs Write Off DeferredFinancingCostsWriteOff	1266000
CY2021	insw	Deferred Financing Costs Write Off DeferredFinancingCostsWriteOff	2113000
CY2020	insw	Deferred Financing Costs Write Off DeferredFinancingCostsWriteOff	13073000
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	6746000
CY2022	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	138966000
CY2020	us-gaap	Proceeds From Collection Of Advance To Affiliate ProceedsFromCollectionOfAdvanceToAffiliate	7456000
CY2022	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	10297000
CY2021	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	21838000
CY2020	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	4013000
CY2021	us-gaap	Noncash Merger Related Costs NoncashMergerRelatedCosts	31053000
CY2020	us-gaap	Increase Decrease In Other Financial Instruments Used In Operating Activities IncreaseDecreaseInOtherFinancialInstrumentsUsedInOperatingActivities	-1271000
CY2022	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	2242000
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-2969000
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1747000
CY2022	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	21344000
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	13250000
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	2935000
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-4465000
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1197000
CY2022	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	-9513000
CY2022	insw	Allocated General And Administrative Expenses Recorded As Capital Contributions AllocatedGeneralAndAdministrativeExpensesRecordedAsCapitalContributions	3111000
CY2021	insw	Allocated General And Administrative Expenses Recorded As Capital Contributions AllocatedGeneralAndAdministrativeExpensesRecordedAsCapitalContributions	9835000
CY2020	insw	Allocated General And Administrative Expenses Recorded As Capital Contributions AllocatedGeneralAndAdministrativeExpensesRecordedAsCapitalContributions	4644000
CY2022	insw	Payments For Drydocking PaymentsForDrydocking	43327000
CY2021	insw	Payments For Drydocking PaymentsForDrydocking	42416000
CY2020	insw	Payments For Drydocking PaymentsForDrydocking	25642000
CY2022	us-gaap	Proceeds From Insurance Settlement Operating Activities ProceedsFromInsuranceSettlementOperatingActivities	5301000
CY2021	us-gaap	Proceeds From Insurance Settlement Operating Activities ProceedsFromInsuranceSettlementOperatingActivities	1846000
CY2020	us-gaap	Proceeds From Insurance Settlement Operating Activities ProceedsFromInsuranceSettlementOperatingActivities	5238000
CY2022	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	182679000
CY2021	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	16470000
CY2020	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-40483000
CY2022	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	2609000
CY2021	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-1636000
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	2995000
CY2022	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	13102000
CY2021	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-3644000
CY2020	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-2281000
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	287801000
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-76192000
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	216140000
CY2021	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	54047000
CY2022	insw	Payment To Acquire Vessels And Vessels Improvements PaymentToAcquireVesselsAndVesselsImprovements	115976000
CY2021	insw	Payment To Acquire Vessels And Vessels Improvements PaymentToAcquireVesselsAndVesselsImprovements	78035000
CY2020	insw	Payment To Acquire Vessels And Vessels Improvements PaymentToAcquireVesselsAndVesselsImprovements	50049000
CY2022	insw	Proceeds From Costs Sale Of Property Plant And Equipment ProceedsFromCostsSaleOfPropertyPlantAndEquipment	99157000
CY2021	insw	Proceeds From Costs Sale Of Property Plant And Equipment ProceedsFromCostsSaleOfPropertyPlantAndEquipment	165809000
CY2020	insw	Proceeds From Costs Sale Of Property Plant And Equipment ProceedsFromCostsSaleOfPropertyPlantAndEquipment	73121000
CY2022	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	710000
CY2021	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	979000
CY2020	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	507000
CY2022	insw	Payments To Repayments From Advances To Affiliate PaymentsToRepaymentsFromAdvancesToAffiliate	-1362000
CY2021	insw	Payments To Repayments From Advances To Affiliate PaymentsToRepaymentsFromAdvancesToAffiliate	7554000
CY2020	insw	Payments To Repayments From Advances To Affiliate PaymentsToRepaymentsFromAdvancesToAffiliate	-2347000
CY2022	us-gaap	Payments To Acquire Restricted Certificates Of Deposit PaymentsToAcquireRestrictedCertificatesOfDeposit	105000000
CY2022	us-gaap	Proceeds From Sale Of Short Term Investments ProceedsFromSaleOfShortTermInvestments	25000000
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	42799000
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	133288000
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	32368000
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	640141000
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	83712000
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	362989000
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	798740000
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	619273000
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	504911000
CY2022	insw	Proceeds From Sale And Leaseback Financing Net Of Issuance And Deferred Financing Costs ProceedsFromSaleAndLeasebackFinancingNetOfIssuanceAndDeferredFinancingCosts	108005000
CY2021	insw	Proceeds From Sale And Leaseback Financing Net Of Issuance And Deferred Financing Costs ProceedsFromSaleAndLeasebackFinancingNetOfIssuanceAndDeferredFinancingCosts	447086000
CY2022	insw	Payments Of Sale And Leaseback Financing PaymentsOfSaleAndLeasebackFinancing	39240000
CY2021	insw	Payments Of Sale And Leaseback Financing PaymentsOfSaleAndLeasebackFinancing	5678000
CY2021	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	15697000
CY2020	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	2681000
CY2022	us-gaap	Payments Of Dividends PaymentsOfDividends	69841000
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	40939000
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	6770000
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	20017000
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	16660000
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	29997000
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	5266000
CY2022	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6097000
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1125000
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1541000
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-163000
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-185789000
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-173840000
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-183074000
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	144811000
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-116744000
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	65434000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	98933000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	215677000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	150243000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	243744000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	98933000
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	215677000
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1022293000
CY2020	us-gaap	Profit Loss ProfitLoss	-5531000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-12043000
CY2020	us-gaap	Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings	6770000
CY2020	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	1541000
CY2020	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	1074000
CY2020	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	29997000
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	972042000
CY2021	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	389626000
CY2021Q4	insw	Derecognition Of Noncontrolling Interest Non Cash Activities DerecognitionOfNoncontrollingInterestNonCashActivities	23460000
CY2021	us-gaap	Profit Loss ProfitLoss	-134660000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	20253000
CY2021	us-gaap	Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings	40947000
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	5266000
CY2021	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	1245000
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	16660000
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1170332000
CY2022	us-gaap	Profit Loss ProfitLoss	387891000
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19324000
CY2022	us-gaap	Adjustments To Additional Paid In Capital Dividends In Excess Of Retained Earnings AdjustmentsToAdditionalPaidInCapitalDividendsInExcessOfRetainedEarnings	69843000
CY2022	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	584000
CY2022	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	6097000
CY2022	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	988000
CY2022	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	20017000
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1487752000
CY2022	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2021Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50674393
CY2021Q3	insw	Asset Acquisition Special Dividends AssetAcquisitionSpecialDividends	31500000
CY2021Q3	insw	Asset Acquisition Special Dividends Per Share Costs AssetAcquisitionSpecialDividendsPerShareCosts	1.12
CY2022	insw	Number Of Representatives In Board Of Directors Of Combined Company NumberOfRepresentativesInBoardOfDirectorsOfCombinedCompany	10
CY2022Q4	insw	Number Of Additional Directors Designated By Company NumberOfAdditionalDirectorsDesignatedByCompany	6
CY2022Q4	insw	Number Of Additional Directors Designated By Counterparty NumberOfAdditionalDirectorsDesignatedByCounterparty	3
CY2022Q4	insw	Number Of Additional Directors Designated By Counterparty NumberOfAdditionalDirectorsDesignatedByCounterparty	3
CY2021Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Accelerated Vesting Number SharebasedCompensationArrangementBySharebasedPaymentAwardAcceleratedVestingNumber	5035
CY2022Q4	insw	Number Of Additional Directors Designated By Counterparty NumberOfAdditionalDirectorsDesignatedByCounterparty	3
CY2022Q4	insw	Number Of Additional Directors Designated By Counterparty NumberOfAdditionalDirectorsDesignatedByCounterparty	3
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1213000
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	0
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1100000
CY2022	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:18pt;text-indent:-18pt;margin:0pt;">3.<i style="font-style:italic;"> </i><i style="font-style:italic;">Concentration of credit risk</i> — The Company is subject to concentrations of credit risk principally from cash and cash equivalents and voyage receivables due from charterers and pools in which the Company participates. The Company manages its credit risk exposure through assessment of the creditworthiness of its counterparties. Cash equivalents consist primarily of time deposits, and money market funds. The Company places its cash and cash equivalents in what we believe to be credit-worthy financial institutions. The Company’s money market funds are carried at fair market value. Voyage receivables consist of (i) operating lease receivables associated with revenues from leases accounted for under ASC 842, <i style="font-style:italic;">Leases </i>(ASC 842), which are primarily </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;">accrued earnings due from pools; and (ii) billed and unbilled non-operating lease receivables associated with revenues from services accounted for under ASC 606, <i style="font-style:italic;">Revenue from Contracts with Customers</i> (ASC 606), which are due within one year. The Company performs ongoing evaluations to determine customer credit and limits the amount of credit extended to customers. The Company maintains allowances for estimated credit losses and these losses have generally been within its expectations. </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:18pt;text-indent:-18pt;margin:0pt;"><span style="visibility:hidden;background:#ffff00;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;">With respect to non-operating lease receivables, the Company recognizes as an allowance its estimate of expected credit losses in accordance with ASC 326, <i style="font-style:italic;">Financial Instruments – Credit losses</i> (ASC 326), based on troubled accounts, historical experience, other currently available evidence, and reasonable and supportable forecasts about the future. The Company makes significant judgements and assumptions to estimate its expected losses. The Company makes judgments about the creditworthiness of customers based on ongoing credit evaluations including analysis of the counterparty’s established credit rating or assessment of the counterparty’s creditworthiness based on our analysis of their financial statements when a credit rating is not available, country and political risk of the counterparty, and their business strategy. The Company manages its non-operating lease receivable portfolios using delinquency as a key credit quality indicator. The Company performs the following steps in estimating expected losses: (i) gather historical losses over five years; (ii) assume outstanding billed amounts over 180 days as additional expected losses; and (iii) make forward-looking adjustments to the expected losses to reflect future economic conditions by comparing credit default swap rates of significant customers over time. In addition, the Company performs individual assessments for customers that do not share risk characteristics with other customers (for example a customer under bankruptcy or a customer with known disputes or collectability issues).</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;"><span style="margin-left:0pt;visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;">The allowance for credit losses reflects our best estimate of probable losses inherent in the voyage receivables balance and is recognized as an allowance or contra-asset to the voyage receivables balance. Provisions for credit losses associated with voyage receivables are included in general and administrative expenses on the consolidated statements of operations. The movement in the allowance for credit losses during the three years ended December 31, 2022 is summarized as follows:</p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;"><span style="margin-left:0pt;visibility:hidden;"></span></p><div style="padding-left:18pt;"><table style="border-collapse:collapse;font-size:16pt;height:max-content;padding-left:0pt;padding-right:0pt;width:96.65%;"><tr style="height:1pt;"><td style="vertical-align:bottom;width:80.6%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="bottom:0pt;position:absolute;width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:middle;width:1.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:50%;transform:translate(0,-50%);width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:middle;white-space:nowrap;width:1.34%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:50%;transform:translate(0,-50%);width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td><td style="vertical-align:middle;width:16.71%;margin:0pt;padding:0pt;"><div style="height:1pt;overflow:hidden;overflow-wrap:break-word;position:relative;"><div style="position:absolute;top:50%;transform:translate(0,-50%);width:100%;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></div></div></td></tr><tr><td style="vertical-align:bottom;width:80.6%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><i style="font-style:italic;">(Dollars in thousands)</i></p></td><td style="vertical-align:middle;width:1.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:middle;white-space:nowrap;width:1.34%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:middle;width:16.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:center;margin:0pt;">Allowance for Credit Losses - Voyage Receivables</p></td></tr><tr><td style="vertical-align:middle;width:80.6%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Balance at January 1, 2020</p></td><td style="vertical-align:bottom;width:1.34%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.34%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.71%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 1,245</p></td></tr><tr><td style="vertical-align:middle;width:80.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Provision for expected credit losses</p></td><td style="vertical-align:bottom;width:1.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 58</p></td></tr><tr><td style="vertical-align:middle;width:80.6%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Write-offs charged against the allowance</p></td><td style="vertical-align:bottom;width:1.34%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.34%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.71%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"> (1,119)</p></td></tr><tr><td style="vertical-align:middle;width:80.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Recoveries of amounts previously written off</p></td><td style="vertical-align:bottom;width:1.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.34%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.71%;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"> (129)</p></td></tr><tr><td style="vertical-align:middle;width:80.6%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Balance at December 31,2020</p></td><td style="vertical-align:bottom;width:1.34%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.34%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.71%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 55</p></td></tr><tr><td style="vertical-align:middle;width:80.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Reversal of expected credit losses</p></td><td style="vertical-align:bottom;width:1.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"> (21)</p></td></tr><tr><td style="vertical-align:middle;width:80.6%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Write-offs charged against the allowance</p></td><td style="vertical-align:bottom;width:1.34%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.34%;background:#cceeff;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.71%;background:#cceeff;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt;"> (3)</p></td></tr><tr><td style="vertical-align:middle;width:80.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Balance at December 31,2021</p></td><td style="vertical-align:middle;width:1.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:1.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 31</p></td></tr><tr><td style="vertical-align:middle;width:80.6%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 6pt;">Provision for expected credit losses</p></td><td style="vertical-align:middle;width:1.34%;background:#cceeff;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:middle;white-space:nowrap;width:1.34%;background:#cceeff;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:bottom;white-space:nowrap;width:16.71%;background:#cceeff;border-bottom:1px solid #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 230</p></td></tr><tr><td style="vertical-align:middle;width:80.6%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">Balance at December 31,2022</p></td><td style="vertical-align:middle;white-space:nowrap;width:1.34%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="visibility:hidden;"></span></p></td><td style="vertical-align:middle;white-space:nowrap;width:1.34%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;">$</p></td><td style="vertical-align:middle;white-space:nowrap;width:16.71%;border-bottom:3px double #000000;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:right;margin:0pt 3pt 0pt 0pt;"> 261</p></td></tr></table></div><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;"><span style="margin-left:0pt;visibility:hidden;background:#ffff00;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;">During the years ended December 31, 2022, 2021 and 2020, the Company did not have any individual customers who accounted for 10% or more of its revenues apart from the pools in which it participates. The pools in which the Company participates accounted in aggregate for 96% and 93% of consolidated voyage receivables at December 31, 2022 and December 31, 2021, respectively.</p>
CY2022	insw	Credit Losses Historical Period CreditLossesHistoricalPeriod	P5Y
CY2022	insw	Credit Losses Outstanding Additional Period CreditLossesOutstandingAdditionalPeriod	P180D
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1245000
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	58000
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	1119000
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	129000
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	55000
CY2021	insw	Reversal Provision For Loan And Lease Losses ReversalProvisionForLoanAndLeaseLosses	21000
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	3000
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	31000
CY2022	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-230000
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	261000
CY2022	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	4300000
CY2021	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	600000
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	864665000
CY2022	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4900000
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2200000
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2800000
CY2022	insw	Collateralized Basis Percentage Benchmark Used In Determining Borrowing Rate CollateralizedBasisPercentageBenchmarkUsedInDeterminingBorrowingRate	1
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	110388000
CY2022	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	19647000
CY2022	insw	Operating Income Loss Allocable To Segments OperatingIncomeLossAllocableToSegments	470516000
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	714000
CY2022Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures Fair Value Disclosure InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure	36414000
CY2022	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;padding-left:18pt;text-indent:-18pt;margin:0pt;">15.<i style="font-style:italic;"> Use of estimates</i> —The preparation of financial statements in conformity with U.S. GAAP 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, judgments involved in identifying performance obligations in revenue contracts, estimating the amount of variable consideration to include in the transaction price, and allocating the transaction price to each performance obligation, estimates used in assessing the recoverability of equity method investments and other long-lived assets, liabilities incurred relating to pension benefits, and income taxes. Actual results could differ from those estimates.</p>
CY2022	insw	Net Income Loss Available To Common Stockholders Basic And Diluted NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted	387401000
CY2021	insw	Net Income Loss Available To Common Stockholders Basic And Diluted NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted	-133645000
CY2020	insw	Net Income Loss Available To Common Stockholders Basic And Diluted NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted	-5544000
CY2022	insw	Participating Securities Distributed And Undistributed Earnings Loss Basic And Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasicAndDiluted	490000
CY2021	insw	Participating Securities Distributed And Undistributed Earnings Loss Basic And Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasicAndDiluted	153000
CY2020	insw	Participating Securities Distributed And Undistributed Earnings Loss Basic And Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasicAndDiluted	13000
CY2022	us-gaap	Net Income Loss NetIncomeLoss	387891000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-133492000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-5531000
CY2022	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	463445
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0
CY2022	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	86524
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1046088
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	962205
CY2022Q4	insw	Adjusted Assets AdjustedAssets	2262644000
CY2022	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	115976000
CY2022	insw	Payments For Drydocking PaymentsForDrydocking	43327000
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	272546000
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	86674000
CY2021	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	9753000
CY2021	insw	Operating Income Loss Allocable To Segments OperatingIncomeLossAllocableToSegments	-37805000
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	21838000
CY2021Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures Fair Value Disclosure InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure	180331000
CY2021Q4	insw	Adjusted Assets AdjustedAssets	2234245000
CY2021	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	78035000
CY2021	insw	Payments For Drydocking PaymentsForDrydocking	42416000
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	421648000
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	74343000
CY2020	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-100087000
CY2020	insw	Operating Income Loss Allocable To Segments OperatingIncomeLossAllocableToSegments	169175000
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	4119000
CY2020Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures Fair Value Disclosure InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure	141924000
CY2020Q4	insw	Adjusted Assets AdjustedAssets	1366332000
CY2020	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	50049000
CY2020	insw	Payments For Drydocking PaymentsForDrydocking	25642000
CY2022	insw	Voyage Expenses VoyageExpenses	10955000
CY2021	insw	Voyage Expenses VoyageExpenses	16686000
CY2020	insw	Voyage Expenses VoyageExpenses	19643000
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	864665000
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	272546000
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	421648000
CY2022Q4	insw	Adjusted Assets AdjustedAssets	2262644000
CY2021Q4	insw	Adjusted Assets AdjustedAssets	2234245000
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	243744000
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	97883000
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	1050000
CY2022Q4	us-gaap	Short Term Investments ShortTermInvestments	80000000
CY2022Q4	us-gaap	Other Assets OtherAssets	28946000
CY2021Q4	us-gaap	Other Assets OtherAssets	13602000
CY2022Q4	us-gaap	Assets Assets	2615334000
CY2021Q4	us-gaap	Assets Assets	2346780000
CY2022Q4	insw	Vessels Deferred Dry Dock And Other Property VesselsDeferredDryDockAndOtherProperty	1869561000
CY2021Q4	insw	Vessels Deferred Dry Dock And Other Property VesselsDeferredDryDockAndOtherProperty	1907894000
CY2020Q4	insw	Vessels Deferred Dry Dock And Other Property VesselsDeferredDryDockAndOtherProperty	1144548000
CY2022	insw	Number Of Vessels Used As Collateral On Debt NumberOfVesselsUsedAsCollateralOnDebt	67
CY2022Q1	us-gaap	Loss On Contract Termination LossOnContractTermination	700000
CY2020Q4	insw	Number Of Vessels Marketed To Be Sold NumberOfVesselsMarketedToBeSold	2
CY2022Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3000000.0
CY2020	us-gaap	Loss On Contract Termination LossOnContractTermination	1600000
CY2021Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	55753000
CY2020Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	36334000
CY2019Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	23125000
CY2022	insw	Drydock Expenditures Additions DrydockExpendituresAdditions	35988000
CY2021	insw	Drydock Expenditures Additions DrydockExpendituresAdditions	40823000
CY2020	insw	Drydock Expenditures Additions DrydockExpendituresAdditions	27835000
CY2022	insw	Deferred Drydock Expenditures Net Subtotal DeferredDrydockExpendituresNetSubtotal	91741000
CY2021	insw	Deferred Drydock Expenditures Net Subtotal DeferredDrydockExpendituresNetSubtotal	77157000
CY2020	insw	Deferred Drydock Expenditures Net Subtotal DeferredDrydockExpendituresNetSubtotal	50960000
CY2022Q4	insw	Accumulated Amortization Deferred Dry Docking Cost AccumulatedAmortizationDeferredDryDockingCost	19809000
CY2021Q4	insw	Accumulated Amortization Deferred Dry Docking Cost AccumulatedAmortizationDeferredDryDockingCost	14566000
CY2020Q4	insw	Accumulated Amortization Deferred Dry Docking Cost AccumulatedAmortizationDeferredDryDockingCost	11780000
CY2022	insw	Gain Loss On Disposal Of Assets And Other Non Cash Charges GainLossOnDisposalOfAssetsAndOtherNonCashCharges	-6321000
CY2021	insw	Gain Loss On Disposal Of Assets And Other Non Cash Charges GainLossOnDisposalOfAssetsAndOtherNonCashCharges	-6838000
CY2020	insw	Gain Loss On Disposal Of Assets And Other Non Cash Charges GainLossOnDisposalOfAssetsAndOtherNonCashCharges	-2846000
CY2022Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	65611000
CY2021Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	55753000
CY2020Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	36334000
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1100000
CY2020Q2	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	25000000
CY2020Q2	us-gaap	Derivative Fixed Interest Rate DerivativeFixedInterestRate	0.0050
CY2020Q2	us-gaap	Derivative Maturity Dates DerivativeMaturityDates	2025-01-23
CY2022Q2	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	358600000
CY2022Q2	us-gaap	Proceeds From Hedge Financing Activities ProceedsFromHedgeFinancingActivities	9600000
CY2022Q2	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	9700000
	us-gaap	Proceeds From Hedge Financing Activities ProceedsFromHedgeFinancingActivities	3000000.0
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	4100000
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	22905000
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	7896000
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-21503000
CY2022Q1	insw	Assets Held For Sale Long Lived And Property Plant And Equipment Fair Value Disclosure AssetsHeldForSaleLongLivedAndPropertyPlantAndEquipmentFairValueDisclosure	27000000.0
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	1023432000
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	1104985000
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	162854000
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	178715000
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	860578000
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	926270000
CY2022	insw	Gains Losses On Repurchase And Extinguishment Of Debt GainsLossesOnRepurchaseAndExtinguishmentOfDebt	1300000
CY2021	insw	Gains Losses On Repurchase And Extinguishment Of Debt GainsLossesOnRepurchaseAndExtinguishmentOfDebt	-6600000
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt Before Write Off Of Deferred Debt Issuance Cost GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost	4200000
CY2020	insw	Gains Losses On Repurchase And Extinguishment Of Debt GainsLossesOnRepurchaseAndExtinguishmentOfDebt	-14300000
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1000
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-9000
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10000
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1826000
CY2021Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1607000
CY2022Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	9909000
CY2021Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	6919000
CY2022Q4	us-gaap	Interest Payable Current InterestPayableCurrent	7723000
CY2021Q4	us-gaap	Interest Payable Current InterestPayableCurrent	543000
CY2022Q4	us-gaap	Accrued Rent Current And Noncurrent AccruedRentCurrentAndNoncurrent	2644000
CY2021Q4	us-gaap	Accrued Rent Current And Noncurrent AccruedRentCurrentAndNoncurrent	827000
CY2022Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	4730000
CY2021Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	13137000
CY2022Q4	us-gaap	Other Accounts Payable And Accrued Liabilities OtherAccountsPayableAndAccruedLiabilities	603000
CY2021Q4	us-gaap	Other Accounts Payable And Accrued Liabilities OtherAccountsPayableAndAccruedLiabilities	2431000
CY2022Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	2962000
CY2021Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	353000
CY2022Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	527000
CY2021Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	736000
CY2022Q4	insw	Accrued Vessel Expenses1 AccruedVesselExpenses1	17911000
CY2021Q4	insw	Accrued Vessel Expenses1 AccruedVesselExpenses1	13082000
CY2022Q4	insw	Accrued General And Administrative Expenses AccruedGeneralAndAdministrativeExpenses	1293000
CY2021Q4	insw	Accrued General And Administrative Expenses AccruedGeneralAndAdministrativeExpenses	1490000
CY2022Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	0
CY2021Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	53000
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	941000
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	3786000
CY2022Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	51069000
CY2021Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	44964000
CY2022Q4	insw	Percent Of Shipping Income Subject To U.S.Federal Taxation PercentOfShippingIncomeSubjectToU.s.FederalTaxation	0.04
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	97000
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1608000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	88000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1618000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1000
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	3200000
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	2307000
CY2022Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	806000
CY2021Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	610000
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	2906000
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1756000
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	0
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	44000
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	6912000
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	4717000
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	6912000
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4675000
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	42000
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	42000
CY2022Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	12800000
CY2021Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	12100000
CY2022Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	6900000
CY2021Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	4700000
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1000000.0
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1100000
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1081000
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7000
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	677000
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	168000
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	397000
CY2022	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	272000
CY2022	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	7000
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	970000
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1081000
CY2022	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	200000
CY2022Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	700000
CY2021Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	400000
CY2021Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	50674393
CY2021Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50674393
CY2021Q3	insw	Number Of Directors Added To Board NumberOfDirectorsAddedToBoard	3
CY2021Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Accelerated Vesting Number SharebasedCompensationArrangementBySharebasedPaymentAwardAcceleratedVestingNumber	5035
CY2021Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Equity Instruments Other Than Options Aggregate Intrinsic Value Vested SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueVested	100000
CY2020Q3	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	100000
CY2022Q4	insw	Post Combination Service PostCombinationService	600000
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Accelerated Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost	200000
CY2022Q1	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2022-02-28
CY2022Q1	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
CY2022Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	3000000.0
CY2022Q1	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2022-03-28
CY2022Q1	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2022-03-14
CY2022Q2	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2022-06-07
CY2022Q3	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2022-08-04
CY2022Q3	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.12
CY2022Q3	us-gaap	Payments Of Dividends PaymentsOfDividends	6000000.0
CY2022Q2	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2022-06-29
CY2022Q3	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2022-09-28
CY2022Q2	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2022-06-17
CY2022Q3	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2022-09-14
CY2022Q4	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2022-11-07
CY2022Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.12
CY2022Q4	us-gaap	Payments Of Dividends PaymentsOfDividends	55000000.0
CY2022Q4	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2022-12-22
CY2022Q4	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2022-12-08
CY2023Q1	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2023-03-28
CY2023Q1	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2023-03-14
CY2021Q1	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2021-02-23
CY2021Q2	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2021-06-04
CY2021Q3	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2021-07-28
CY2021Q4	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2021-11-08
CY2021Q1	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
CY2021Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
CY2021Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	1700000
CY2021Q2	us-gaap	Payments Of Dividends PaymentsOfDividends	1700000
CY2021Q3	us-gaap	Payments Of Dividends PaymentsOfDividends	3000000.0
CY2021Q4	us-gaap	Payments Of Dividends PaymentsOfDividends	3000000.0
CY2021Q1	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2021-03-26
CY2021Q2	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2021-06-28
CY2021Q3	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2021-09-23
CY2021Q4	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2021-12-23
CY2021Q1	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2021-03-11
CY2021Q2	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2021-06-14
CY2021Q3	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2021-09-09
CY2021Q4	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2021-12-09
CY2020Q1	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2020-02-26
CY2020Q2	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2020-05-20
CY2020Q3	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2020-08-04
CY2020Q4	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2020-10-28
CY2020Q1	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
CY2020Q2	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
CY2020Q3	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
CY2020Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
CY2020Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	1700000
CY2020Q2	us-gaap	Payments Of Dividends PaymentsOfDividends	1700000
CY2020Q3	us-gaap	Payments Of Dividends PaymentsOfDividends	1700000
CY2020Q4	us-gaap	Payments Of Dividends PaymentsOfDividends	1700000
CY2020Q1	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2020-03-30
CY2020Q2	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2020-06-22
CY2020Q3	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2020-09-23
CY2020Q4	us-gaap	Dividend Payable Date To Be Paid Day Month And Year DividendPayableDateToBePaidDayMonthAndYear	2020-12-23
CY2020Q1	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2020-03-17
CY2020Q2	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2020-06-08
CY2020Q3	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2020-09-09
CY2020Q4	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2020-12-08
CY2021Q3	insw	Asset Acquisition Special Dividends AssetAcquisitionSpecialDividends	31500000
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	513479
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	56065
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	75894
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	41.79
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	20.06
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	20.31
CY2019Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	30000000.0
CY2022	us-gaap	Stock Repurchase Program Expiration Date StockRepurchaseProgramExpirationDate	2021-03-05
	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	1417292
	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	21.16
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	30000000.0
CY2020Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	30000000.0
CY2020Q3	us-gaap	Stock Repurchase Program Period In Force1 StockRepurchaseProgramPeriodInForce1	P24M
CY2020Q3	us-gaap	Stock Repurchase Program Expiration Date StockRepurchaseProgramExpirationDate	2022-08-04
CY2020Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	30000000.0
CY2020Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	50000000.0
CY2021Q4	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	1077070
CY2021Q4	insw	Stock Repurchased Per Share Amount StockRepurchasedPerShareAmount	15.44
CY2021Q4	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	16700000
CY2022Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	60000000.0
CY2022Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	33300000
CY2022Q3	us-gaap	Stock Repurchase Program Expiration Date StockRepurchaseProgramExpirationDate	2023-12-31
CY2022	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	687740
CY2022	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	29.08
CY2022	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	20000000.0
CY2022Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	60000000.0
CY2022Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	40000000.0
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y11M15D
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y11M15D
CY2022	us-gaap	Restricted Stock Expense RestrictedStockExpense	5500000
CY2021	us-gaap	Restricted Stock Expense RestrictedStockExpense	9300000
CY2020	us-gaap	Restricted Stock Expense RestrictedStockExpense	4600000
CY2022	insw	Stock Options Compensation Expense Income StockOptionsCompensationExpenseIncome	1000000.0
CY2021	insw	Stock Options Compensation Expense Income StockOptionsCompensationExpenseIncome	1200000
CY2020	insw	Stock Options Compensation Expense Income StockOptionsCompensationExpenseIncome	1100000
CY2022Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	9900000
CY2022	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M17D
CY2022Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	16912000
CY2021Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-4863000
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	9948000
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	7497000
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	6964000
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	8393000
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-12360000
CY2022	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	822000
CY2021	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-11723000
CY2020	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-9521000
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	1700000
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax	1300000
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-10000000.0
CY2022Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	-8600000
CY2022	us-gaap	Derivative Instruments Gain Loss Reclassification From Accumulated Oci To Income Estimated Net Amount To Be Transferred DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred	-7600000
CY2022	insw	Lease Cancellation Period Notice LeaseCancellationPeriodNotice	P90D
CY2022	us-gaap	Revenues Revenues	864665000
CY2021	us-gaap	Revenues Revenues	272546000
CY2020	us-gaap	Revenues Revenues	421648000
CY2022Q1	us-gaap	Accounts Receivable Net AccountsReceivableNet	2306000
CY2022Q1	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	225000
CY2022Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	9452000
CY2022Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	1866000
CY2021	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	0
CY2022	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	0
CY2020	us-gaap	Contract With Customer Performance Obligation Satisfied In Previous Period ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod	47000
CY2022Q4	us-gaap	Capitalized Contract Cost Gross CapitalizedContractCostGross	0
CY2022	us-gaap	Lease Cost LeaseCost	19884000
CY2021	us-gaap	Lease Cost LeaseCost	15528000
CY2020	us-gaap	Lease Cost LeaseCost	17492000
CY2022	insw	Excluded Vessels Chartered Period ExcludedVesselsCharteredPeriod	P1M
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	10207000
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	10464000
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	12878000
CY2022	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	533000
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	8471000
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	23168000
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	44391000
CY2022Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	1596000
CY2022Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	41870000
CY2022Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	7740000
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	12522000
CY2022Q4	insw	Operating And Financing Lease Liability OperatingAndFinancingLeaseLiability	51206000
CY2021Q4	insw	Operating And Financing Lease Liability OperatingAndFinancingLeaseLiability	20915000
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P1Y8M23D
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y1M24D
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0677
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0542
CY2022	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	442000
CY2021	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	360000
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	525000
CY2022	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	955000
CY2021	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	1053000
CY2020	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	1018000
CY2022	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	73000
CY2021	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	80000
CY2020	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	75000
CY2022	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-235000
CY2021	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-304000
CY2020	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-310000
CY2022	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-205000
CY2021	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-309000
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-108000
CY2022	insw	Defined Benefit Plan Unrecognized Actuarial Losses Amortization Period DefinedBenefitPlanUnrecognizedActuarialLossesAmortizationPeriod	P19Y
CY2022	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	600000
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	600000
CY2022Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0490
CY2021Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0180
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0180
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0120
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0200
CY2022	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0348
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0336
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0389
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	944000
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	937000
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	1040000
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	1210000
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	1013000
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	5691000
CY2022Q4	insw	Defined Benefit Plan Expected Future Benefit Payments DefinedBenefitPlanExpectedFutureBenefitPayments	10835000
CY2022Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	16833000
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	400000
CY2022	us-gaap	Investment Income Interest InvestmentIncomeInterest	3653000
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	104000
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	558000
CY2022	insw	Other Net Actuarial Gain Loss Related To Pension OtherNetActuarialGainLossRelatedToPension	647000
CY2021	insw	Other Net Actuarial Gain Loss Related To Pension OtherNetActuarialGainLossRelatedToPension	667000
CY2020	insw	Other Net Actuarial Gain Loss Related To Pension OtherNetActuarialGainLossRelatedToPension	633000
CY2022	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	1266000
CY2021	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	2113000
CY2020	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	13073000
CY2021	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	-4465000
CY2020	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	-1197000
CY2022	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	135000
CY2022	insw	Other Other Income Expense OtherOtherIncomeExpense	-567000
CY2021	insw	Other Other Income Expense OtherOtherIncomeExpense	-140000
CY2020	insw	Other Other Income Expense OtherOtherIncomeExpense	262000
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2332000
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5947000
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-12817000

Files In Submission

Name	View Source	Status
insw-20221231_lab.xml	Edgar Link	unprocessable
insw-20221231_cal.xml	Edgar Link	unprocessable
0001558370-23-002247-index-headers.html	Edgar Link	pending
0001558370-23-002247-index.html	Edgar Link	pending
0001558370-23-002247.txt	Edgar Link	pending
0001558370-23-002247-xbrl.zip	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
insw-20221231.xsd	Edgar Link	pending
insw-20221231x10k.htm	Edgar Link	pending
insw-20221231x10k005.jpg	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
insw-20221231xex21.htm	Edgar Link	pending
insw-20221231xex23.htm	Edgar Link	pending
insw-20221231xex31d1.htm	Edgar Link	pending
insw-20221231xex31d2.htm	Edgar Link	pending
insw-20221231xex32.htm	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R109.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R110.htm	Edgar Link	pending
R111.htm	Edgar Link	pending
R112.htm	Edgar Link	pending
R113.htm	Edgar Link	pending
R114.htm	Edgar Link	pending
R115.htm	Edgar Link	pending
R116.htm	Edgar Link	pending
R117.htm	Edgar Link	pending
R118.htm	Edgar Link	pending
R119.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R120.htm	Edgar Link	pending
R121.htm	Edgar Link	pending
R122.htm	Edgar Link	pending
R123.htm	Edgar Link	pending
R124.htm	Edgar Link	pending
R125.htm	Edgar Link	pending
R126.htm	Edgar Link	pending
R127.htm	Edgar Link	pending
R128.htm	Edgar Link	pending
R129.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
insw-20221231_def.xml	Edgar Link	unprocessable
insw-20221231_pre.xml	Edgar Link	unprocessable
insw-20221231x10k_htm.xml	Edgar Link	completed
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$INSW
International Seaways, Inc. Stock $insw

2023 Q1 Form 10-K Financial Statement

#000155837023002247 Filed on February 28, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INSW International Seaways, Inc. Stock $insw

2023 Q1 Form 10-K Financial Statement

#000155837023002247 Filed on February 28, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INSW
International Seaways, Inc. Stock $insw