$INSW
International Seaways, Inc. Stock $insw

$insw Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000155837022002682 Filed on March 02, 2022

Income Statement

Concept	2021 Q4	2021 Q3	2021 Q2
Revenue	$94.67M	$84.82M	$46.30M
YoY Change	66.96%	-15.08%	-66.86%
Cost Of Revenue	$76.61M	$73.55M	$32.81M
YoY Change	87.78%	78.09%	-16.29%
Gross Profit	$18.06M	$11.27M	$13.49M
YoY Change	13.56%	-80.77%	-86.58%
Gross Profit Margin	19.07%	13.28%	29.13%
Selling, General & Admin	$12.48M	$10.34M	$9.341M
YoY Change	24.77%	4.46%	-3.7%
% of Gross Profit	69.1%	91.8%	69.24%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$27.72M	$25.81M	$17.08M
YoY Change	53.15%	35.72%	-9.54%
% of Gross Profit	153.52%	229.06%	126.6%
Operating Expenses	$39.51M	$36.09M	$26.42M
YoY Change	40.11%	24.43%	-7.29%
Operating Profit	-$21.45M	-$62.82M	-$17.42M
YoY Change	-78.15%	-473.22%	-125.66%
Interest Expense	-$6.606M	$10.64M	$7.006M
YoY Change	-184.44%	33.0%	-21.11%
% of Operating Profit
Other Income/Expense, Net	-$6.393M	-$113.0K	$267.0K
YoY Change	-1013.29%	-45.67%	86.71%
Pretax Income	-$33.05M	-$67.84M	-$18.78M
YoY Change	-71.73%	-585.25%	-129.18%
Income Tax	$1.582M	$35.00K	$1.000K
% Of Pretax Income
Net Earnings	-$33.99M	-$67.35M	-$18.78M
YoY Change	-70.92%	-581.74%	-129.19%
Net Earnings / Revenue	-35.91%	-79.41%	-40.56%
Basic Earnings Per Share		-$1.44	-$0.67
Diluted Earnings Per Share	-$673.9K	-$1.44	-$0.67
COMMON SHARES
Basic Shares Outstanding	50.69M	46.90M	28.05M
Diluted Shares Outstanding		46.90M	28.05M

Balance Sheet

Concept	2021 Q4	2021 Q3	2021 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$97.88M	$108.9M	$117.4M
YoY Change	-50.91%	-20.69%	-8.36%
Cash & Equivalents	$97.88M	$108.9M	$117.4M
Short-Term Investments
Other Short-Term Assets	$11.76M	$16.13M	$35.51M
YoY Change	95.98%	198.67%	454.86%
Inventory	$2.110M	$2.578M	$2.103M
Prepaid Expenses
Receivables	$107.1M	$96.86M	$50.98M
Other Receivables	$5.651M	$4.320M	$6.324M
Total Short-Term Assets	$224.5M	$228.8M	$212.3M
YoY Change	-12.59%	3.88%	-12.35%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.803B	$1.909B	$1.056B
YoY Change	62.68%	51.21%	-18.0%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$180.3M	$177.4M	$149.6M
YoY Change	25.14%	12.56%	-3.62%
Other Assets	$7.700M	$3.565M	$7.519M
YoY Change	138.46%	21.88%	138.24%
Total Long-Term Assets	$2.122B	$2.213B	$1.307B
YoY Change	59.61%	48.32%	-13.86%
TOTAL ASSETS
Total Short-Term Assets	$224.5M	$228.8M	$212.3M
Total Long-Term Assets	$2.122B	$2.213B	$1.307B
Total Assets	$2.347B	$2.442B	$1.519B
YoY Change	47.92%	42.6%	-13.65%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.607M	$49.09M	$29.45M
YoY Change	-38.41%	79.15%	0.18%
Accrued Expenses	$8.393M	$6.714M	$7.226M
YoY Change	-5.7%	-32.18%	-30.52%
Deferred Revenue	$353.0K
YoY Change	-88.46%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$178.7M	$220.8M	$61.48M
YoY Change	190.67%	259.13%	-24.54%
Total Short-Term Liabilities	$234.6M	$280.9M	$102.1M
YoY Change	115.45%	173.23%	-21.78%
LONG-TERM LIABILITIES
Long-Term Debt	$926.3M	$887.7M	$444.6M
YoY Change	95.28%	81.46%	-15.06%
Other Long-Term Liabilities	$2.288M	$12.70M	$13.41M
YoY Change	-84.6%	-20.55%	973.66%
Total Long-Term Liabilities	$928.6M	$900.4M	$458.0M
YoY Change	89.81%	78.23%	-12.71%
TOTAL LIABILITIES
Total Short-Term Liabilities	$234.6M	$280.9M	$102.1M
Total Long-Term Liabilities	$928.6M	$900.4M	$458.0M
Total Liabilities	$1.176B	$1.197B	$571.4M
YoY Change	91.45%	91.29%	-16.81%
SHAREHOLDERS EQUITY
Retained Earnings	-$409.3M	-$375.3M	-$308.0M
YoY Change	48.39%	136.13%	78.1%
Common Stock	$1.591B	$1.610B	$1.278B
YoY Change	24.28%	25.67%	-0.21%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.170B	$1.215B	$947.5M
YoY Change
Total Liabilities & Shareholders Equity	$2.347B	$2.442B	$1.519B
YoY Change	47.92%	42.6%	-13.65%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2021 Q2
OPERATING ACTIVITIES
Net Income	-$33.99M	-$67.35M	-$18.78M
YoY Change	-70.92%	-581.74%	-129.19%
Depreciation, Depletion And Amortization	$27.72M	$25.81M	$17.08M
YoY Change	53.15%	35.72%	-9.54%
Cash From Operating Activities	-$27.16M	-$26.52M	-$1.518M
YoY Change	-256.99%	-137.29%	-101.7%
INVESTING ACTIVITIES
Capital Expenditures	-$34.35M	-$20.26M	-$20.90M
YoY Change	828.38%	261.84%	71.32%
Acquisitions
YoY Change
Other Investing Activities	$51.50M	$157.5M	$3.236M
YoY Change	-23.14%	6461.17%	-747.2%
Cash From Investing Activities	$17.15M	$137.2M	-$17.67M
YoY Change	-72.95%	-4387.66%	40.2%
FINANCING ACTIVITIES
Cash Dividend Paid	$3.000M	$3.000M	$1.700M
YoY Change	76.47%	76.47%	0.0%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-23.65M	-111.7M	-19.63M
YoY Change	25.78%	90.55%	-53.92%
NET CHANGE
Cash From Operating Activities	-27.16M	-26.52M	-1.518M
Cash From Investing Activities	17.15M	137.2M	-17.67M
Cash From Financing Activities	-23.65M	-111.7M	-19.63M
Net Change In Cash	-33.66M	-973.0K	-38.81M
YoY Change	-154.37%	-110.46%	-213.49%
FREE CASH FLOW
Cash From Operating Activities	-$27.16M	-$26.52M	-$1.518M
Capital Expenditures	-$34.35M	-$20.26M	-$20.90M
Free Cash Flow	$7.191M	-$6.252M	$19.38M
YoY Change	-65.76%	-108.15%	-80.92%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001679049
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	38407007
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	28372375
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	29225483
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.48
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.20
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.03
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet
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
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	49612019
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	28014877
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OperatingLeaseRightOfUseAsset
CY2021Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OperatingLeaseLiabilityCurrent
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OperatingLeaseLiabilityNoncurrent
CY2021Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OperatingLeaseLiability
CY2021	us-gaap	Stock Repurchase Program Period In Force1 StockRepurchaseProgramPeriodInForce1	P24M
CY2021Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	50674393
CY2021	insw	Derivative Loss Statement Of Income Or Comprehensive Income Extensible Enumeration DerivativeLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration	http://fasb.org/us-gaap/2021-01-31#OtherNonoperatingIncomeExpense
CY2021Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	50674393
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	1-37836-1
CY2021	dei	Entity Registrant Name EntityRegistrantName	INTERNATIONAL SEAWAYS, INC.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	1T
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-0467117
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	600 Third Avenue
CY2021	dei	Entity Address Address Line2 EntityAddressAddressLine2	39th Floor
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	New York
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	10016
CY2021	dei	City Area Code CityAreaCode	212
CY2021	dei	Local Phone Number LocalPhoneNumber	578-1600
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	true
CY2021	dei	Entity Ex Transition Period EntityExTransitionPeriod	true
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	531129000
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	49599637
CY2021	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2021	dei	Auditor Location AuditorLocation	New York, NY
CY2021	dei	Auditor Firm AuditorFirmId	42
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	97883000
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	199390000
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	31000
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	55000
CY2021Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	100137000
CY2020Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	38430000
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	107096000
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	43362000
CY2021Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	5651000
CY2020Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	4479000
CY2021Q4	us-gaap	Inventory Net InventoryNet	2110000
CY2020Q4	us-gaap	Inventory Net InventoryNet	3601000
CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	11759000
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	6002000
CY2021Q4	us-gaap	Assets Current AssetsCurrent	224499000
CY2020Q4	us-gaap	Assets Current AssetsCurrent	256834000
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1050000
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	16287000
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1802850000
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1108214000
CY2021Q4	insw	Property Plant And Equipment In Construction PropertyPlantAndEquipmentInConstruction	49291000
CY2021Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	55753000
CY2020Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	36334000
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	23168000
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	21588000
CY2021Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	180331000
CY2020Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	141924000
CY2021Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	1296000
CY2020Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	2129000
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	842000
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	7700000
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	3229000
CY2021Q4	us-gaap	Assets Assets	2346780000
CY2020Q4	us-gaap	Assets Assets	1586539000
CY2021Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	44964000
CY2020Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	34425000
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	8393000
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	8867000
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	178715000
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	61483000
CY2021Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	2539000
CY2020Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	4121000
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	234611000
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	108896000
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	12522000
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	10253000
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	926270000
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	474332000
CY2021Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	757000
CY2020Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	6155000
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2288000
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	14861000
CY2021Q4	us-gaap	Liabilities Liabilities	1176448000
CY2020Q4	us-gaap	Liabilities Liabilities	614497000
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000
CY2020Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
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CY2021Q4	us-gaap	Common Stock Value CommonStockValue	1591446000
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	1280501000
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-409338000
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-275846000
CY2021Q4	insw	Stockholders Equity Subtotal StockholdersEquitySubtotal	1182108000
CY2020Q4	insw	Stockholders Equity Subtotal StockholdersEquitySubtotal	1004655000
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-12360000
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-32613000
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	1169748000
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	972042000
CY2021Q4	us-gaap	Minority Interest MinorityInterest	584000
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1170332000
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CY2019	us-gaap	Revenues Revenues	366184000
CY2021	insw	Voyage Expenses VoyageExpenses	16686000
CY2020	insw	Voyage Expenses VoyageExpenses	19643000
CY2019	insw	Voyage Expenses VoyageExpenses	26265000
CY2021	insw	Vessel Expenses VesselExpenses	183057000
CY2020	insw	Vessel Expenses VesselExpenses	128373000
CY2019	insw	Vessel Expenses VesselExpenses	123205000
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	23934000
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	30114000
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	57512000
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	86674000
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CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	75653000
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	33256000
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CY2021	insw	Reversal Provision For Loan And Lease Losses ReversalProvisionForLoanAndLeaseLosses	21000
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CY2021	us-gaap	Recapitalization Costs RecapitalizationCosts	110000
CY2020	us-gaap	Recapitalization Costs RecapitalizationCosts	232000
CY2019	us-gaap	Recapitalization Costs RecapitalizationCosts	30000
CY2021	insw	Asset Acquisition Transaction Cost AssetAcquisitionTransactionCost	50740000
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CY2021	us-gaap	Costs And Expenses CostsAndExpenses	384683000
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CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	-112137000
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	39880000
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	55168000
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	21838000
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	4119000
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	11213000
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
CY2019	insw	Operating Income Loss Including Equity In Income Loss Of Affiliated Companies OperatingIncomeLossIncludingEquityInIncomeLossOfAffiliatedCompanies	66381000
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5947000
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-12817000
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-943000
CY2021	insw	Loss Before Interest Expense Reorganization Items And Taxes LossBeforeInterestExpenseReorganizationItemsAndTaxes	-96246000
CY2020	insw	Loss Before Interest Expense Reorganization Items And Taxes LossBeforeInterestExpenseReorganizationItemsAndTaxes	31182000
CY2019	insw	Loss Before Interest Expense Reorganization Items And Taxes LossBeforeInterestExpenseReorganizationItemsAndTaxes	65438000
CY2021	us-gaap	Interest Expense InterestExpense	36796000
CY2020	us-gaap	Interest Expense InterestExpense	36712000
CY2019	us-gaap	Interest Expense InterestExpense	66267000
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
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-829000
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1618000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1000
CY2021	us-gaap	Profit Loss ProfitLoss	-134660000
CY2020	us-gaap	Profit Loss ProfitLoss	-5531000
CY2019	us-gaap	Profit Loss ProfitLoss	-830000
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1168000
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-133492000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-5531000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-830000
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	38407007
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	28372375
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	29225483
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.48
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.20
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.03
CY2021	us-gaap	Profit Loss ProfitLoss	-134660000
CY2020	us-gaap	Profit Loss ProfitLoss	-5531000
CY2019	us-gaap	Profit Loss ProfitLoss	-830000
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
CY2019	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	9788000
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
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	-32000
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
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-461000
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	20253000
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-12043000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9359000
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
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	8529000
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-1168000
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-113239000
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-17574000
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	8529000
CY2021	us-gaap	Profit Loss ProfitLoss	-134660000
CY2020	us-gaap	Profit Loss ProfitLoss	-5531000
CY2019	us-gaap	Profit Loss ProfitLoss	-830000
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	86674000
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	74343000
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	75653000
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
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2313000
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2898000
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	6920000
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2428000
CY2021	insw	Deferred Financing Costs Write Off DeferredFinancingCostsWriteOff	2113000
CY2020	insw	Deferred Financing Costs Write Off DeferredFinancingCostsWriteOff	13073000
CY2019	insw	Deferred Financing Costs Write Off DeferredFinancingCostsWriteOff	3558000
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	10529000
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	5631000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	4278000
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
CY2019	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	30266000
CY2021	us-gaap	Noncash Merger Related Costs NoncashMergerRelatedCosts	31053000
CY2019	insw	Other Comprehensive Income Loss Released On Upon Sale Of Investment In Affiliated Company OtherComprehensiveIncomeLossReleasedOnUponSaleOfInvestmentInAffiliatedCompany	-21615000
CY2020	us-gaap	Increase Decrease In Other Financial Instruments Used In Operating Activities IncreaseDecreaseInOtherFinancialInstrumentsUsedInOperatingActivities	-1271000
CY2019	us-gaap	Increase Decrease In Other Financial Instruments Used In Operating Activities IncreaseDecreaseInOtherFinancialInstrumentsUsedInOperatingActivities	923000
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-2969000
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1747000
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1461000
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	13250000
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	2935000
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-308000
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-4465000
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1197000
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1100000
CY2019	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	3033000
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
CY2019	insw	Allocated General And Administrative Expenses Recorded As Capital Contributions AllocatedGeneralAndAdministrativeExpensesRecordedAsCapitalContributions	13855000
CY2021	insw	Payments For Drydocking PaymentsForDrydocking	42416000
CY2020	insw	Payments For Drydocking PaymentsForDrydocking	25642000
CY2019	insw	Payments For Drydocking PaymentsForDrydocking	19546000
CY2021	us-gaap	Proceeds From Insurance Settlement Operating Activities ProceedsFromInsuranceSettlementOperatingActivities	1846000
CY2020	us-gaap	Proceeds From Insurance Settlement Operating Activities ProceedsFromInsuranceSettlementOperatingActivities	5238000
CY2019	us-gaap	Proceeds From Insurance Settlement Operating Activities ProceedsFromInsuranceSettlementOperatingActivities	2179000
CY2021	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	16470000
CY2020	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-40483000
CY2019	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-10778000
CY2021	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-1636000
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	2995000
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-25000
CY2021	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-3644000
CY2020	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-2281000
CY2019	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	404000
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
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	87486000
CY2021	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	54047000
CY2021	insw	Payment To Acquire Vessels And Vessels Improvements PaymentToAcquireVesselsAndVesselsImprovements	78035000
CY2020	insw	Payment To Acquire Vessels And Vessels Improvements PaymentToAcquireVesselsAndVesselsImprovements	50049000
CY2019	insw	Payment To Acquire Vessels And Vessels Improvements PaymentToAcquireVesselsAndVesselsImprovements	36607000
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
CY2019	insw	Proceeds From Costs Sale Of Property Plant And Equipment ProceedsFromCostsSaleOfPropertyPlantAndEquipment	15767000
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
CY2019	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	574000
CY2021	insw	Payments To Repayments From Advances To Affiliate PaymentsToRepaymentsFromAdvancesToAffiliate	7554000
CY2020	insw	Payments To Repayments From Advances To Affiliate PaymentsToRepaymentsFromAdvancesToAffiliate	-2347000
CY2019	insw	Payments To Repayments From Advances To Affiliate PaymentsToRepaymentsFromAdvancesToAffiliate	-2338000
CY2019	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	122755000
CY2020	us-gaap	Proceeds From Collection Of Advance To Affiliate ProceedsFromCollectionOfAdvanceToAffiliate	7456000
CY2019	us-gaap	Proceeds From Collection Of Advance To Affiliate ProceedsFromCollectionOfAdvanceToAffiliate	4195000
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
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	107874000
CY2021	insw	Proceeds From Repayments Of Issuance Of Long Term Debt ProceedsFromRepaymentsOfIssuanceOfLongTermDebt	43712000
CY2020	insw	Proceeds From Repayments Of Issuance Of Long Term Debt ProceedsFromRepaymentsOfIssuanceOfLongTermDebt	362989000
CY2019	insw	Proceeds From Repayments Of Issuance Of Long Term Debt ProceedsFromRepaymentsOfIssuanceOfLongTermDebt	-100000
CY2021	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	295091000
CY2020	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	422904000
CY2019	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	112092000
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	164264000
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	82007000
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	49911000
CY2021	insw	Proceeds From Sale And Leaseback Financing Net Of Issuance And Deferred Financing Costs ProceedsFromSaleAndLeasebackFinancingNetOfIssuanceAndDeferredFinancingCosts	447086000
CY2021	insw	Payments Of Sale And Leaseback Financing PaymentsOfSaleAndLeasebackFinancing	5678000
CY2021	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	40000000
CY2021	insw	Repayments On Revolving Credit Facilities RepaymentsOnRevolvingCreditFacilities	159918000
CY2021	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	15697000
CY2020	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	2681000
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 Of Dividends PaymentsOfDividends	40939000
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	6770000
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	5266000
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
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	369000
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-163000
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-289000
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
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-162761000
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
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	32599000
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
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	117644000
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
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1009855000
CY2019	us-gaap	Profit Loss ProfitLoss	-830000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9359000
CY2019	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	369000
CY2019	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	1062000
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
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	16660000
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1170332000
CY2020	us-gaap	Dividends Dividends	6770000
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	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	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 Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	1125000
CY2021	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	1245000
CY2021	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
CY2021	insw	Number Of Representatives In Board Of Directors Of Combined Company NumberOfRepresentativesInBoardOfDirectorsOfCombinedCompany	10
CY2021Q4	insw	Number Of Additional Directors Designated By Company NumberOfAdditionalDirectorsDesignatedByCompany	6
CY2021Q4	insw	Number Of Additional Directors Designated By Counterparty NumberOfAdditionalDirectorsDesignatedByCounterparty	3
CY2021Q4	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
CY2021Q4	insw	Number Of Additional Directors Designated By Counterparty NumberOfAdditionalDirectorsDesignatedByCounterparty	3
CY2021Q4	insw	Number Of Additional Directors Designated By Counterparty NumberOfAdditionalDirectorsDesignatedByCounterparty	3
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1100000
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	16300000
CY2021	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;">2.<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 its counterparty creditworthiness. 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 unbilled amounts due from pools; and (ii) billed and unbilled non-operating lease receivables associated with revenues from services accounted for </p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt 0pt 0pt 18pt;">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 limit the amount of credit we extend. 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 is recognized as an allowance or contra-asset and reflects our best estimate of probable losses inherent in the voyage receivables balance. Provisions for credit losses associated with voyage receivables are included in provision for credit losses on the consolidated statements of operations. Activity for allowance for credit losses 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;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></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="font-size:1pt;visibility:hidden;"></span></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="font-size:1pt;visibility:hidden;"></span></p></td><td style="vertical-align:middle;width:16.71%;margin:0pt;padding:0pt;"><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="font-size:1pt;visibility:hidden;"></span></p></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, 2019</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;"> —</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%;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 3pt 0pt 0pt;"> 1,245</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, 2019</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;"> 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: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: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: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%;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: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;"> (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;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;"> 31</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;">We are also exposed to credit losses from off-balance sheet exposures related to guarantees of joint venture debt. See Note 7, “<span style="background:#ffffff;">Equity Method Investments</span>,” for more information on these off-balance sheet exposures.</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;">During the years ended December 31, 2021, 2020 and 2019, 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 93% and 88% of consolidated voyage receivables at December 31, 2021 and December 31, 2020, respectively.</p>
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1213000
CY2021	insw	Credit Losses Historical Period CreditLossesHistoricalPeriod	P5Y
CY2021	insw	Credit Losses Outstanding Additional Period CreditLossesOutstandingAdditionalPeriod	P180D
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1245000
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 Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	3000
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	31000
CY2021	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	600000
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0
CY2019	insw	Number Of Vessels In Construction NumberOfVesselsInConstruction	0
CY2020	insw	Number Of Vessels In Construction NumberOfVesselsInConstruction	0
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2200000
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2800000
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4800000
CY2021	insw	Collateralized Basis Percentage Benchmark Used In Determining Borrowing Rate CollateralizedBasisPercentageBenchmarkUsedInDeterminingBorrowingRate	1
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
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	746616
CY2021	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>
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	272546000
CY2019	insw	Net Income Loss Available To Common Stockholders Basic And Diluted NetIncomeLossAvailableToCommonStockholdersBasicAndDiluted	-830000
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
CY2021	us-gaap	Net Income Loss NetIncomeLoss	-133492000
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-5531000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	-830000
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0
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
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	78006000
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
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	366184000
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	75653000
CY2019	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-308000
CY2019	insw	Operating Income Loss Allocable To Segments OperatingIncomeLossAllocableToSegments	83549000
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	11213000
CY2019Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures Fair Value Disclosure InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure	153292000
CY2019Q4	insw	Adjusted Assets AdjustedAssets	1597694000
CY2019	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	36607000
CY2019	insw	Payments For Drydocking PaymentsForDrydocking	19546000
CY2020Q4	insw	Number Of Vessels Marketed To Be Sold NumberOfVesselsMarketedToBeSold	2
CY2020	us-gaap	Loss On Contract Termination LossOnContractTermination	1600000
CY2020Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	36334000
CY2021	insw	Voyage Expenses VoyageExpenses	16686000
CY2020	insw	Voyage Expenses VoyageExpenses	19643000
CY2019	insw	Voyage Expenses VoyageExpenses	26265000
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
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	366184000
CY2021Q4	insw	Adjusted Assets AdjustedAssets	2234245000
CY2020Q4	insw	Adjusted Assets AdjustedAssets	1366332000
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	97883000
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	199390000
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	1050000
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	16287000
CY2021Q4	us-gaap	Other Assets OtherAssets	13602000
CY2020Q4	us-gaap	Other Assets OtherAssets	4530000
CY2021Q4	us-gaap	Assets Assets	2346780000
CY2020Q4	us-gaap	Assets Assets	1586539000
CY2021Q4	insw	Vessels Deferred Dry Dock And Other Property VesselsDeferredDryDockAndOtherProperty	1907894000
CY2020Q4	insw	Vessels Deferred Dry Dock And Other Property VesselsDeferredDryDockAndOtherProperty	1144548000
CY2019Q4	insw	Vessels Deferred Dry Dock And Other Property VesselsDeferredDryDockAndOtherProperty	1315641000
CY2019Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	23125000
CY2018Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	16773000
CY2021	insw	Drydock Expenditures Additions DrydockExpendituresAdditions	40823000
CY2020	insw	Drydock Expenditures Additions DrydockExpendituresAdditions	27835000
CY2019	insw	Drydock Expenditures Additions DrydockExpendituresAdditions	21086000
CY2021	insw	Deferred Drydock Expenditures Net Subtotal DeferredDrydockExpendituresNetSubtotal	77157000
CY2020	insw	Deferred Drydock Expenditures Net Subtotal DeferredDrydockExpendituresNetSubtotal	50960000
CY2019	insw	Deferred Drydock Expenditures Net Subtotal DeferredDrydockExpendituresNetSubtotal	37859000
CY2021Q4	insw	Accumulated Amortization Deferred Dry Docking Cost AccumulatedAmortizationDeferredDryDockingCost	14566000
CY2020Q4	insw	Accumulated Amortization Deferred Dry Docking Cost AccumulatedAmortizationDeferredDryDockingCost	11780000
CY2019Q4	insw	Accumulated Amortization Deferred Dry Docking Cost AccumulatedAmortizationDeferredDryDockingCost	14685000
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
CY2019	insw	Gain Loss On Disposal Of Assets And Other Non Cash Charges GainLossOnDisposalOfAssetsAndOtherNonCashCharges	-49000
CY2021Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	55753000
CY2020Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	36334000
CY2019Q4	insw	Deferred Drydock Expenditures Net DeferredDrydockExpendituresNet	23125000
CY2021Q4	insw	Number Of Joint Ventures NumberOfJointVentures	2
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	1100000
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	16300000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	500000
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
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
CY2021Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	1607000
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	2609000
CY2021Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	6919000
CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	6293000
CY2021Q4	us-gaap	Interest Payable Current InterestPayableCurrent	543000
CY2020Q4	us-gaap	Interest Payable Current InterestPayableCurrent	370000
CY2021Q4	insw	Derivative Liability Related To Hybrid Instrument DerivativeLiabilityRelatedToHybridInstrument	0
CY2020Q4	insw	Derivative Liability Related To Hybrid Instrument DerivativeLiabilityRelatedToHybridInstrument	2979000
CY2021Q4	us-gaap	Accrued Rent Current And Noncurrent AccruedRentCurrentAndNoncurrent	827000
CY2020Q4	us-gaap	Accrued Rent Current And Noncurrent AccruedRentCurrentAndNoncurrent	787000
CY2021Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	13137000
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	6247000
CY2021Q4	us-gaap	Other Accounts Payable And Accrued Liabilities OtherAccountsPayableAndAccruedLiabilities	2431000
CY2020Q4	us-gaap	Other Accounts Payable And Accrued Liabilities OtherAccountsPayableAndAccruedLiabilities	656000
CY2021Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	353000
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	3060000
CY2021Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	736000
CY2020Q4	us-gaap	Accrued Insurance Current AccruedInsuranceCurrent	493000
CY2021Q4	insw	Accrued Vessel Expenses1 AccruedVesselExpenses1	13082000
CY2020Q4	insw	Accrued Vessel Expenses1 AccruedVesselExpenses1	8779000
CY2021Q4	insw	Accrued General And Administrative Expenses AccruedGeneralAndAdministrativeExpenses	1490000
CY2020Q4	insw	Accrued General And Administrative Expenses AccruedGeneralAndAdministrativeExpenses	940000
CY2021Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	53000
CY2020Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	0
CY2021Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	3786000
CY2020Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	1212000
CY2021Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	44964000
CY2020Q4	us-gaap	Accounts Payable And Other Accrued Liabilities Current AccountsPayableAndOtherAccruedLiabilitiesCurrent	34425000
CY2021Q4	insw	Percent Of Shipping Income Subject To U.S.Federal Taxation PercentOfShippingIncomeSubjectToU.s.FederalTaxation	0.04
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1608000
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1000
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1000
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10000
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1618000
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1000
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1000
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	2307000
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	2173000
CY2021Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	610000
CY2020Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	612000
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1756000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	1950000
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	44000
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	0
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	4717000
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	4735000
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4675000
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4735000
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	42000
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	42000
CY2021Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	12100000
CY2020Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	11400000
CY2020Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	4700000
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1100000
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7000
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7000
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7000
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	677000
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	397000
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1081000
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7000
CY2021Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	400000
CY2020Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	8000
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
CY2021Q4	insw	Post Combination Service PostCombinationService	600000
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Accelerated Compensation Cost ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost	200000
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
CY2021Q2	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
CY2021Q3	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
CY2022Q1	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.06
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
CY2022Q1	us-gaap	Dividends Payable Date Declared Day Month And Year DividendsPayableDateDeclaredDayMonthAndYear	2022-02-28
CY2022Q1	us-gaap	Dividends Payable Date Of Record Day Month And Year DividendsPayableDateOfRecordDayMonthAndYear	2022-03-14
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	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
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
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	21589
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
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	17.07
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Shares Purchased For Award ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPurchasedForAward	11948
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Per Share Weighted Average Price Of Shares Purchased ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased	14.67
CY2019Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	30000000.0
CY2021	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
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y7M17D
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y8M15D
CY2021	us-gaap	Restricted Stock Expense RestrictedStockExpense	9300000
CY2020	us-gaap	Restricted Stock Expense RestrictedStockExpense	4600000
CY2019	us-gaap	Restricted Stock Expense RestrictedStockExpense	3200000
CY2021	insw	Stock Options Compensation Expense Income StockOptionsCompensationExpenseIncome	1200000
CY2020	insw	Stock Options Compensation Expense Income StockOptionsCompensationExpenseIncome	1100000
CY2019	insw	Stock Options Compensation Expense Income StockOptionsCompensationExpenseIncome	1100000
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	5500000
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M20D
CY2021Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-4863000
CY2020Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-24098000
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	7497000
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	8515000
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-12360000
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-32613000
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
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-29303000
CY2021Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	1300000
CY2021Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax	1000000.0
CY2021Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-7900000
CY2021Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	-6500000
CY2021	us-gaap	Derivative Instruments Gain Loss Reclassification From Accumulated Oci To Income Estimated Net Amount To Be Transferred DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred	-5000000.0
CY2021	insw	Lease Cancellation Period Notice LeaseCancellationPeriodNotice	P90D
CY2021	us-gaap	Revenues Revenues	272546000
CY2020	us-gaap	Revenues Revenues	421648000
CY2019	us-gaap	Revenues Revenues	366184000
CY2020Q1	us-gaap	Accounts Receivable Net AccountsReceivableNet	2148000
CY2020Q1	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	166000
CY2021Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	2306000
CY2021Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	225000
CY2021	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
CY2019	insw	Contract With Customer Adjustment To Estimates Of Performance Obligations ContractWithCustomerAdjustmentToEstimatesOfPerformanceObligations	493000
CY2021Q4	us-gaap	Capitalized Contract Cost Gross CapitalizedContractCostGross	0
CY2021	us-gaap	Lease Cost LeaseCost	15528000
CY2020	us-gaap	Lease Cost LeaseCost	17492000
CY2019	us-gaap	Lease Cost LeaseCost	27198000
CY2021	insw	Excluded Vessels Chartered Period ExcludedVesselsCharteredPeriod	P1M
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	10464000
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	12878000
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	16178000
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	23168000
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	21588000
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	8393000
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	8867000
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	12522000
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	10253000
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	20915000
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	19120000
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y1M24D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P2Y9M
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0542
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0721
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
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0280
CY2021	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0336
CY2021	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	360000
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	525000
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	657000
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
CY2019	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	1017000
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
CY2019	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	74000
CY2021	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-304000
CY2020	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-310000
CY2019	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-315000
CY2021	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-309000
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-108000
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	29000
CY2021	insw	Defined Benefit Plan Unrecognized Actuarial Losses Amortization Period DefinedBenefitPlanUnrecognizedActuarialLossesAmortizationPeriod	P19Y
CY2021Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0180
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0120
CY2020	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0389
CY2019	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0446
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	1018000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	913000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	1039000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	1150000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	1337000
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	6162000
CY2021Q4	insw	Defined Benefit Plan Expected Future Benefit Payments DefinedBenefitPlanExpectedFutureBenefitPayments	11619000
CY2021Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	30140000
CY2021Q4	us-gaap	Defined Benefit Plan Plan Assets Target Allocation Percentage DefinedBenefitPlanPlanAssetsTargetAllocationPercentage	1
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	600000
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	400000
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	400000
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	104000
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	558000
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	2520000
CY2021	insw	Other Net Actuarial Gain Loss Related To Pension OtherNetActuarialGainLossRelatedToPension	667000
CY2020	insw	Other Net Actuarial Gain Loss Related To Pension OtherNetActuarialGainLossRelatedToPension	633000
CY2019	insw	Other Net Actuarial Gain Loss Related To Pension OtherNetActuarialGainLossRelatedToPension	628000
CY2021	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	2113000
CY2020	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	13073000
CY2019	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	3558000
CY2021	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	-4465000
CY2020	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	-1197000
CY2019	us-gaap	Gain Loss On Repurchase Of Debt Instrument GainLossOnRepurchaseOfDebtInstrument	-1100000
CY2021	insw	Other Other Income Expense OtherOtherIncomeExpense	-140000
CY2020	insw	Other Other Income Expense OtherOtherIncomeExpense	262000
CY2019	insw	Other Other Income Expense OtherOtherIncomeExpense	567000
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-5947000
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-12817000
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-943000

Files In Submission

Name	View Source	Status
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$INSW
International Seaways, Inc. Stock $insw

2021 Q4 Form 10-K Financial Statement

#000155837022002682 Filed on March 02, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INSW International Seaways, Inc. Stock $insw

2021 Q4 Form 10-K Financial Statement

#000155837022002682 Filed on March 02, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$INSW
International Seaways, Inc. Stock $insw