Related Parties	9 Months Ended
Sep. 30, 2019
Related Parties [Abstract]
Related Parties	Note 11 — Related Parties: Amounts payable to the Company’s former parent, Overseas Shipholding Group, Inc. (“OSG”), included in accounts payable, accrued expenses and other current liabilities in the condensed consolidated balance sheets, aggregate to $36 and $34 as of September 30, 2019 and December 31, 2018, respectively, and are related to a guarantee provided by OSG as described below. The FSO Joint Venture is a party to a number of contracts: (a) the FSO Joint Venture is an obligor pursuant to a guarantee facility agreement dated as of July 14, 2017, by and among, the FSO Joint Venture, ING Belgium NV/SA, as issuing bank, and Euronav and INSW, as guarantors (the ‘‘Guarantee Facility’’); (b) the FSO Joint Venture is party to two service contracts with NOC (the ‘‘NOC Service Contracts’’) and (c) the FSO Joint Venture is a borrower under a $220,000 secured credit facility by and among TI Africa and TI Asia, as joint and several borrowers, ABN AMRO Bank N.V. and ING Belgium SA/NV, as Lenders, Mandated Lead Arrangers and Swap Banks, and ING Bank N.V., as Agent and as Security Trustee. INSW severally guarantees the obligations of the FSO Joint Venture pursuant to the Guarantee Facility. The FSO Joint Venture drew down on a $220,000 credit facility in April 2018. The Company provided a guarantee for the $110,000 FSO Term Loan portion of the facility, which amortizes over the remaining terms of the NOC Service Contracts, which expire in July 2022 and September 2022. INSW’s guarantee of the FSO Term Loan has financial covenants that provide (i) INSW’s Liquid Assets shall not be less than the higher of $50,000 and 5% of Total Indebtedness of INSW, (ii) INSW shall have Cash of at least $30,000 and (iii) INSW is in compliance with the Loan to Value Test (as such capitalized terms are defined in the Company guarantee or in the case of the Loan to Value Test, as defined in the credit agreement underlying the Company’s 2017 Debt Facilities (see Note 9, “Debt”). As of September 30, 2019, and December 31, 2018, the maximum aggregate potential amount of future payments (undiscounted) that INSW could be required to make in relation to its equity method investees secured bank debt and interest rate swap obligations was $77,065 and $93,548, respectively, and the carrying value of the Company's guaranty in the accompanying condensed consolidated balance sheets was $349 and $673, respectively. INSW maintained a guarantee in favor of Qatar Liquefied Gas Company Limited (2) (‘‘LNG Charterer’’) relating to certain LNG Tanker Time Charter Party Agreements with the LNG Charterer and each of Overseas LNG H1 Corporation, Overseas LNG H2 Corporation, Overseas LNG S1 Corporation and Overseas LNG S2 Corporation (such agreements, the ‘‘LNG Charter Party Agreements,’’ and such guarantee, the ‘‘LNG Performance Guarantee’’). INSW was obligated to pay Nakilat an annual fee of $100 until such time that Nakilat ceases to provide a guarantee in favor of the LNG charterer relating to performance under the LNG Charter Party Agreements. INSW’s guarantee and obligation to pay a fee to Nakilat terminated in October 2019, upon the sale of INSW’s equity interest in the LNG Joint Venture (see Note 6, “Equity Method Investments”). OSG continued to provide a guarantee in favor of the LNG Charterer relating to the LNG Charter Party Agreements (such guarantees, the ‘‘OSG LNG Performance Guarantee’’). INSW indemnified OSG for any liabilities arising from the OSG LNG Performance Guarantee pursuant to the terms of the Separation and Distribution Agreement. In connection with the OSG LNG Performance Guarantee, INSW was obligated to pay an annual fee of $145 to OSG for 2019. OSG’s guarantee and INSW’s obligation to pay OSG a fee terminated in October 2019, upon the sale of INSW’s equity interest in the LNG Joint Venture.

Note 11 — Related Parties:

Amounts payable to the Company’s former parent, Overseas Shipholding Group, Inc. (“OSG”), included in accounts payable, accrued expenses and other current liabilities in the condensed consolidated balance sheets, aggregate to $36 and $34 as of September 30, 2019 and December 31, 2018, respectively, and are related to a guarantee provided by OSG as described below.

The FSO Joint Venture is a party to a number of contracts: (a) the FSO Joint Venture is an obligor pursuant to a guarantee facility agreement dated as of July 14, 2017, by and among, the FSO Joint Venture, ING Belgium NV/SA, as issuing bank, and Euronav and INSW, as guarantors (the ‘‘Guarantee Facility’’); (b) the FSO Joint Venture is party to two service contracts with NOC (the ‘‘NOC Service Contracts’’) and (c) the FSO Joint Venture is a borrower under a $220,000 secured credit facility by and among TI Africa and TI Asia, as joint and several borrowers, ABN AMRO Bank N.V. and ING Belgium SA/NV, as Lenders, Mandated Lead Arrangers and Swap Banks, and ING Bank N.V., as Agent and as Security Trustee. INSW severally guarantees the obligations of the FSO Joint Venture pursuant to the Guarantee Facility.

The FSO Joint Venture drew down on a $220,000 credit facility in April 2018. The Company provided a guarantee for the $110,000 FSO Term Loan portion of the facility, which amortizes over the remaining terms of the NOC Service Contracts, which expire in July 2022 and September 2022. INSW’s guarantee of the FSO Term Loan has financial covenants that provide (i) INSW’s Liquid Assets shall not be less than the higher of $50,000 and 5% of Total Indebtedness of INSW, (ii) INSW shall have Cash of at least $30,000 and (iii) INSW is in compliance with the Loan to Value Test (as such capitalized terms are defined in the Company guarantee or in the case of the Loan to Value Test, as defined in the credit agreement underlying the Company’s 2017 Debt Facilities (see Note 9, “Debt”). As of September 30, 2019, and December 31, 2018, the maximum aggregate potential amount of future payments (undiscounted) that INSW could be required to make in relation to its equity method investees secured bank debt and interest rate swap obligations was $77,065 and $93,548, respectively, and the carrying value of the Company's guaranty in the accompanying condensed consolidated balance sheets was $349 and $673, respectively.

INSW maintained a guarantee in favor of Qatar Liquefied Gas Company Limited (2) (‘‘LNG Charterer’’) relating to certain LNG Tanker Time Charter Party Agreements with the LNG Charterer and each of Overseas LNG H1 Corporation, Overseas LNG H2 Corporation, Overseas LNG S1 Corporation and Overseas LNG S2 Corporation (such agreements, the ‘‘LNG Charter Party Agreements,’’ and such guarantee, the ‘‘LNG Performance Guarantee’’). INSW was obligated to pay Nakilat an annual fee of $100 until such time that Nakilat ceases to provide a guarantee in favor of the LNG charterer relating to performance under the LNG Charter Party Agreements. INSW’s guarantee and obligation to pay a fee to Nakilat terminated in October 2019, upon the sale of INSW’s equity interest in the LNG Joint Venture (see Note 6, “Equity Method Investments”).

OSG continued to provide a guarantee in favor of the LNG Charterer relating to the LNG Charter Party Agreements (such guarantees, the ‘‘OSG LNG Performance Guarantee’’). INSW indemnified OSG for any liabilities arising from the OSG LNG Performance Guarantee pursuant to the terms of the Separation and Distribution Agreement. In connection with the OSG LNG Performance Guarantee, INSW was obligated to pay an annual fee of $145 to OSG for 2019. OSG’s guarantee and INSW’s obligation to pay OSG a fee terminated in October 2019, upon the sale of INSW’s equity interest in the LNG Joint Venture.