Overseas Shipholding Group, Inc. - Ordinary Shares (OSG) 10-K 1 Apr 21 2020 FY Annual report Financial data

Cover

Cover - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 24, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Current Fiscal Year End Date	--12-31
Entity File Number	1-6479-1
Entity Registrant Name	OVERSEAS SHIPHOLDING GROUP, INC.
Entity Central Index Key	0000075208
Entity Tax Identification Number	13-2637623
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	302 Knights Run Avenue
Entity Address, City or Town	Tampa
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33602
City Area Code	813
Local Phone Number	209-0600
Title of 12(b) Security	Class A Common Stock (par value $0.01 per share)
Trading Symbol	OSG
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 119,609,327
Entity Bankruptcy Proceedings, Reporting Current	true
Entity Common Stock, Shares Outstanding		86,674,209
ICFR Auditor Attestation Flag	true

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 69,697	$ 41,503
Restricted cash	49	60
Voyage receivables, including unbilled of $6,740 and $5,611, net of reserve for doubtful accounts	13,123	9,247
Income tax recoverable	387	1,192
Other receivables	1,817	3,037
Prepaid expenses	1,310	1,292
Inventories and other current assets	2,293	1,178
Total Current Assets	88,676	57,509
Vessels and other property, less accumulated depreciation and amortization	832,174	737,212
Deferred drydock expenditures, net	43,134	23,734
Total Vessels, Deferred Drydock and Other Property	875,308	760,946
Restricted cash	73	114
Investments in and advances to affiliated companies		3,599
Intangible assets, less accumulated amortization	27,217	31,817
Operating lease right-of-use assets	215,817	286,469
Other assets	24,646	35,013
Total Assets	1,231,737	1,175,467
Current Liabilities:
Accounts payable, accrued expenses and other current liabilities	48,089	35,876
Current installments of long-term debt	38,922	31,512
Current portion of operating lease liabilities	90,613	90,145
Current portion of finance lease liabilities	4,000	4,011
Total Current Liabilities	181,624	161,544
Reserve for uncertain tax positions	189	864
Long-term debt, net	390,198	336,535
Deferred income taxes, net	80,992	72,833
Noncurrent operating lease liabilities	147,154	219,501
Noncurrent finance lease liabilities	21,360	23,548
Other liabilities	30,409	19,097
Total Liabilities	851,926	833,922
Commitments and contingencies (Note 18)
Equity:
Common stock - Class A ($0.01 par value; 166,666,666 shares authorized; 86,365,422 and 85,713,610 shares issued and outstanding)	864	857
Paid-in additional capital	592,564	590,436
Accumulated deficit	(213,335)	(243,339)
Stockholder’s Equity Subtotal	380,093	347,954
Accumulated other comprehensive loss	(282)	(6,409)
Total Equity	379,811	341,545
Total Liabilities and Equity	$ 1,231,737	$ 1,175,467

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Unbilled Contracts Receivable	$ 6,740	$ 5,611
Common Stock, Par or Stated Value Per Share		$ 0.01
Common Stock, Shares Authorized		166,666,666
Common Stock, Shares, Outstanding	86,365,422	85,713,610

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Shipping Revenues:
Time charter revenues	$ 344,512	$ 263,683
Voyage charter revenues	74,180	91,864
Total Shipping revenues	418,692	355,547
Operating Expenses:
Voyage expenses	42,813	20,414
Vessel expenses	159,466	134,618
Charter hire expenses	90,608	90,359
Depreciation and amortization	58,513	52,499
General and administrative	26,869	23,399
Bad debt expense		4,300
Loss on disposal of vessels and other property, including impairments, net	982	106
Total operating expenses	379,251	325,695
Income from vessel operations	39,441	29,852
Equity in income of affiliated companies		3,552
Gain on termination of pre-existing arrangement	19,172
Operating income	58,613	33,404
Other income, net	1,621	1,440
Income before interest expense and income taxes	60,234	34,844
Interest expense, net	(24,045)	(25,633)
Income before income taxes	36,189	9,211
Income tax expense	(6,185)	(536)
Net income	$ 30,004	$ 8,675
Weighted Average Number of Common Shares Outstanding:
Basic - Class A	89,794,392	89,251,818
Diluted - Class A	90,838,262	89,658,938
Per Share Amounts:
Basic and diluted net income - Class A	$ 0.33	$ 0.10

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net income	$ 30,004	$ 8,675
Defined benefit pension and other postretirement benefit plans:
Net change in unrecognized prior service costs	4,595	(175)
Net change in unrecognized actuarial gain	1,532	958
Other comprehensive income	6,127	783
Comprehensive income	$ 36,131	$ 9,458

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities:
Net income		$ 30,004	$ 8,675
Items included in net income not affecting cash flows:
Depreciation and amortization		58,513	52,499
Bad debt expense			4,300
Gain on termination of pre-existing arrangement		(19,172)
Amortization of debt discount and other deferred financing costs		2,286	1,965
Compensation relating to restricted stock, stock unit and stock option grants		2,333	1,662
Deferred income tax expense/(benefit)		6,298	(991)
Interest on finance lease liabilities		1,973	1,462
Non-cash operating lease expense		91,696	90,922
Distributed/(undistributed) earnings of affiliated companies		3,562	(14)
Items included in net income related to investing and financing activities:
Loss on extinguishment and prepayments of debt, net	[1]	793	72
Loss on disposal of vessels and other property, including impairments, net		982	106
Payments for drydocking		(30,732)	(12,278)
Changes in operating assets and liabilities:
Operating lease liabilities		(92,753)	(83,608)
(Increase)/decrease in receivables		(3,876)	2,549
Increase/(decrease) in income tax receivable		6,133	(601)
(Decrease)/increase in deferred revenue		(2,903)	4,848
Net change in other operating assets and liabilities		(2,469)	1,881
Net cash provided by operating activities		52,668	73,449
Cash Flows from Investing Activities:
Acquisition, net of cash acquired		(16,973)
Expenditures for vessels and vessel improvements		(62,586)	(118,055)
Proceeds from disposal of vessels and other property		1,407	3,404
Expenditures for other property			(4,459)
Deposit for vessel purchases			(10,800)
Net cash used in investing activities		(78,152)	(129,910)
Cash Flows from Financing Activities:
Extinguishment of debt and prepayments		(41,021)	(3,271)
Issuance of debt, net of issuance and deferred financing costs		143,949	47,824
Payments on debt		(44,933)	(23,866)
Tax withholding on share-based awards		(197)	(294)
Payments on principal portion of finance lease liabilities		(4,172)	(2,896)
Net cash provided by financing activities		53,626	17,497
Net increase/(decrease) in cash, cash equivalents and restricted cash		28,142	(38,964)
Cash, cash equivalents and restricted cash at beginning of year		41,677	80,641
Cash, cash equivalents and restricted cash at end of year		$ 69,819	$ 41,677
[1]	See Note 8, “Debt,” for disclosures relating to loss on mandatory prepayments of debt.

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity/(Deficit) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Beginning balance, value at Dec. 31, 2018	$ 848	$ 587,826	$ (252,014)	$ (7,192)	$ 329,468
Net income			8,675		8,675
Other comprehensive income, net of taxes				783	783
Issuance and vesting of restricted stock awards	6	(6)
Taxes withheld and forfeitures of restricted stock awards		(300)			(300)
Compensation related to Class A options granted		672			672
Compensation related to Class A restricted stock awards		2,247			2,247
Conversion of Class A warrants to Class A common stock	3	(3)
Ending balance, value at Dec. 31, 2019	857	590,436	(243,339)	(6,409)	341,545
Net income			30,004		30,004
Other comprehensive income, net of taxes				6,127	6,127
Issuance and vesting of restricted stock awards	8	(8)
Taxes withheld and forfeitures of restricted stock awards	(1)	(197)			(198)
Compensation related to Class A options granted		11			11
Compensation related to Class A restricted stock awards		2,322			2,322
Ending balance, value at Dec. 31, 2020	$ 864	$ 592,564	$ (213,335)	$ (282)	$ 379,811

BASIS OF PRESENTATION AND DESCR

BASIS OF PRESENTATION AND DESCRIPTION OF BUSINESS	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION AND DESCRIPTION OF BUSINESS	NOTE 1 — BASIS OF PRESENTATION AND DESCRIPTION OF BUSINESS The consolidated financial statements include the accounts of Overseas Shipholding Group, Inc., a Delaware corporation incorporated in 1969, and its wholly owned subsidiaries (the “Company” or “OSG”, or “we” or “us” or “our”), including Alaska Tanker Company (“ATC”) as of its March 12, 2020 acquisition date. The Company owns and operates a fleet of oceangoing vessels engaged primarily in the transportation of crude oil and refined petroleum products in the U.S. Flag trade. All significant intercompany balances and transactions have been eliminated in consolidation. At December 31, 2019, investments in 50% In March 2020, the World Health Organization declared the outbreak of a novel coronavirus (“COVID-19”) as a pandemic, which continues to affect the United States and the world. COVID-19 and its direct and indirect consequences have caused significant volatility in U.S. and international markets, and there is significant uncertainty around the breadth and duration of business disruptions related to COVID-19, as well as its impact on the U.S. and international economies. The COVID-19 pandemic is a dynamic and continuously evolving phenomenon and the ultimate severity of the outbreak, and its effect on the Company’s business in the future, is uncertain.

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	NOTE 2 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 1. Cash and cash equivalents - Interest-bearing deposits that are highly liquid investments and have a maturity of three months or less when purchased are included in cash and cash equivalents. Restricted cash as of December 31, 2020 and 2019 was related to the Company’s Unsecured Senior Notes as defined in Note 8, “Debt”. 2. Vessels, vessel lives, deferred drydocking expenditures and other property - Vessels are recorded at cost and are depreciated to their estimated salvage value on the straight-line basis over the estimated useful lives of the vessels, which are generally 25 years (except for new ATBs for which estimated useful lives of 30 years are used) . Other property, including leasehold improvements, are recorded at cost and amortized on a straight-line basis over the shorter of the terms of the leases or the estimated useful lives of the assets, which range from three years to 15 years. Interest costs are capitalized to vessels and other property during the period that vessels are under construction and projects are in progress. During the years ended December 31, 2020 and 2019, interest costs capitalized were $ 3,717 and $ 3,636 , respectively. Expenditures incurred during a drydocking are deferred and amortized on the straight-line basis over the shorter of the terms of the leases or the period until the next scheduled drydocking, generally two and a half to five years. The Company only includes in deferred drydocking costs those direct costs that are incurred as part of the drydocking to meet regulatory requirements, or are expenditures that add economic life to the vessel, increase the vessel’s earnings capacity or improve the vessel’s efficiency. Direct costs include shipyard costs as well as the costs of placing the vessel in the shipyard. Expenditures for normal maintenance and repairs, whether incurred as part of the drydocking or not, are expensed as incurred. The carrying value of each of the Company’s vessels represents its original cost at the time it was delivered or purchased less depreciation calculated using estimated useful lives from the date such vessel was originally delivered from the shipyard or from the date (as in the case of certain of the Company’s ATBs) a vessel was rebuilt. A vessel’s carrying value is reduced to its new cost basis (i.e., its current fair value) if a vessel impairment charge is recorded. If the estimated economic lives assigned to the Company’s vessels prove to be too long because of new regulations, a prolonged weak market environment, a broad imposition of age restrictions by the Company’s customers, or other future events, it could result in higher depreciation expense and impairment losses in future periods related to a reduction in the useful lives of any affected vessels. 3. Impairment of long-lived assets - The carrying amounts of long-lived assets held and used by the Company are reviewed for potential impairment whenever events or changes in circumstances indicate that the carrying amount of a particular asset may not be fully recoverable. In such instances, the requirement for impairment could be triggered if the estimate of the undiscounted future cash flows expected to result from the use of the asset and its eventual disposition is less than the asset’s carrying amount. This assessment is made at the individual vessel level since separately identifiable cash flow information for each vessel is available. The impairment charge, if any, would be measured as the amount by which the carrying amount of a vessel exceeded its fair value. A long-lived asset impairment charge results in a new cost basis being established for the relevant long-lived asset. See Note 9, “Fair Value Measurements and Fair Value Disclosures,” for further discussion on the impairment tests performed on our vessels during the two years ended December 31, 2020. 4. Intangible assets - Intangible assets with estimable useful lives are amortized over their estimated useful lives and are reviewed for potential impairment whenever events or changes in circumstances indicate that the carrying amount of the intangible asset may be impaired. See Note 9, “Fair Value Measurements and Fair Value Disclosures,” for further discussion on the impairment test performed on the Company’s intangible assets at December 31, 2020. 5. Deferred finance charges - Finance charges incurred in the arrangement and amendment of debt are deferred and amortized to interest expense on an effective interest method over the life of the related debt. Unamortized deferred financing charges of $ 6,998 8,005 2,286 1,965 6. Revenue and expense recognition - Revenues from time charters are accounted for as operating leases and are thus recognized ratably over the rental periods of such charters, as service is performed. Revenues from voyage charter contracts are recognized ratably over the estimated length of each voyage, calculated on a load-to-discharge basis. The Company classifies time charter leasing arrangements less than 90 days within the voyage charter revenue financial statement line item because the Company believes the pricing negotiated within these short-term time charter contracts more closely aligns with the Company’s voyage charter spot market. Under voyage charters, expenses such as fuel, port charges, canal tolls, cargo handling operations and brokerage commissions are paid by the Company whereas, under time and bareboat charters, such voyage costs are generally paid by the Company’s customers. The Company receives a stipend pursuant to the Maritime Security Act of 1996 for the two U.S. Flag Product Carriers which participate in the U.S. MSP program. This stipend has been recorded as an offset to vessel expenses which amounted to $ 9,665 10,000 7. Voyage receivables - All customers are granted credit on a short-term basis and related credit risks are considered minimal. The Company routinely reviews its voyage receivables and makes provisions for probable doubtful accounts; however, those provisions are estimates and actual results could differ from those estimates and those differences may be material. Voyage receivables are deemed uncollectible and removed from accounts receivable and the allowance for doubtful accounts when collection efforts have been exhausted. 8. Concentration of credit risk - Financial instruments that potentially subject the Company to concentrations of credit risk are voyage receivables due from charterers. With respect to voyage receivables, the Company limits its credit risk by performing ongoing credit evaluations. Voyage receivables reflected on the consolidated balance sheets as of December 31, 2020 and 2019 are net of a reserve for doubtful accounts of $ 4,604 and $ 5,040 , respectively. In June 2019, one of the Company’s lightering customers, Philadelphia Energy Solutions LLC (“PES”), suffered an explosion and fire at their refinery in the Delaware Bay. In July 2019, PES filed a Chapter 11 bankruptcy petition. The reserve for doubtful accounts at December 31, 2020 and 2019 includes a provision of $ 4,300 on outstanding receivables of $ 4,300 from PES as the ultimate recovery of these receivables is currently unknown. During the years ended December 31, 2020 and 2019, the Company had three individual customers for both years who accounted for 10% or more of the Company’s revenues. The customers and their related percentages were Monroe Energy LLC ( 12.6% ), BP Exploration Alaska Inc. ( 11.4% ) and SeaRiver Maritime Inc. ( 10.1% ) for the year ended December 31, 2020 and Monroe Energy LLC ( 16% ), SeaRiver Maritime, Inc. ( 12% ) and Shell ( 10% ) for the year ended December 31, 2019. The Company’s cash and cash equivalents balances generally exceed Federal Deposit Insurance Corporation insurance limits. Cash and cash equivalents are placed in what the Company believes to be creditworthy financial institutions. In addition, certain of the Company’s money market accounts invest in U.S. Treasury securities or other obligations issued or guaranteed by the U.S. government or its agencies. 9. Income taxes - The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. Net deferred tax assets are recorded to the extent the Company believes these assets will more likely than not be realized. In making such a determination, all available positive and negative evidence is considered, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. In the event the Company were to determine that it would be able to realize its deferred income tax assets in the future in excess of their net recorded amount, an adjustment would be made to the deferred tax asset valuation allowance, which would reduce the provision for income taxes in the period such determination is made. Uncertain tax positions are recorded in accordance with ASC 740, Income Taxes greater than 50% likely to be realized upon ultimate settlement with the related tax authority. 10. Use of estimates - The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts of assets, liabilities, equity, revenues and expenses reported in the financial statements and accompanying notes. The most significant estimates relate to the depreciation of vessels and other property, amortization of drydocking costs, estimates used in assessing the recoverability of vessels, intangible assets and other long-lived assets, liabilities incurred relating to pension benefits, and income taxes. Actual results could differ from those estimates. 11. Segment information - Operating segments are defined as components of an enterprise that engage in business activities. The Company has determined that it operates its business as a single segment as its chief operating decision maker makes decisions about resource allocations and reviews and measures the Company’s results as one line of business with similar regulatory requirements, customers and commodities transported. 12. Inventories - Inventories are included in the inventories and other current assets line item on the consolidated balance sheets. Inventories are accounted for on the first in first out basis and consist of fuel on the Company’s vessels. 13. Acquisition of Alaska Tanker Company, LLC and related transactions 14. Recently adopted accounting standards - In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement In August 2018, the FASB issued ASU 2018-15, Intangibles — Goodwill and Other — Internal-Use Software (Subtopic 350-40),Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, Internal-Use Software In August 2018, the FASB issued ASU 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20), Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans 15. Recently issued accounting standards — In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Codification Improvements to Topic 326 In November 2019, the FASB issued ASU 2019-10, Financial Instruments – Credit Losses (Topic 326), Derivatives and Hedging (Topic 815) and Leases (Topic 842): Effective Dates, Bucket 1— All public business entities (“PBEs”) that are SEC filers (as defined in U.S. GAAP), excluding smaller reporting companies (“SRCs”) (as defined by the SEC). The credit losses standard became effective January 1, 2020. Bucket 2— All other entities, including SRCs, other PBEs that are not SEC filers, private companies, not-for-profit organizations, and employee benefit plans. The credit losses standard is to become effective January 1, 2023. At the annual evaluation date on June 30, 2019, the Company met the SEC definition of a smaller reporting company. Accordingly, the Company plans to adopt the credit losses standard on January 1, 2023. Management is currently reviewing the impact of the adoption of this accounting standard on the Company’s consolidated financial statements. In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes,

EARNINGS PER COMMON SHARE

EARNINGS PER COMMON SHARE	12 Months Ended
	Dec. 31, 2020
Per Share Amounts:
EARNINGS PER COMMON SHARE	NOTE 3 — EARNINGS PER COMMON SHARE Basic earnings per common share is computed by dividing earnings, after the deduction of dividends and undistributed earnings allocated to participating securities, by the weighted average number of common shares outstanding during the period. As management deemed the exercise price for the Class A of $ 0.01 per share to be nominal, warrant proceeds are ignored and the shares issuable upon Class A warrant exercise are included in the calculation of Class A basic weighted average common shares outstanding for all periods. The computation of diluted earnings per share assumes the issuance of common stock for all potentially dilutive stock options and restricted stock units. Class A As of December 31, 2020, there were 2,605,263 shares of Class A common stock issuable under outstanding restricted stock units and 1,478,756 shares of Class A common stock issuable under outstanding options, both of which are considered to be potentially dilutive securities. As of December 31, 2019, there were 1,718,865 shares of Class A common stock issuable under outstanding restricted stock units and 1,478,756 shares of Class A common stock issuable under outstanding options, both of which are considered to be potentially dilutive securities. The components of the calculation of basic earnings per share and diluted earnings per share are as follows: SCHEDULE OF EARNINGS PER SHARE Years Ended December 31, 2020 2019 Net income $ 30,004 $ 8,675 Weighted average common shares outstanding: Class A common stock - basic 89,794,392 89,251,818 Class A common stock - diluted 90,838,262 89,658,938 For annual earnings per share calculations, there were 1,043,870 and 407,120 dilutive equity awards outstanding for the years ended December 31, 2020 and 2019. Awards of 371,893 and 920,845 shares, which are related to stock options, for 2020 and 2019, respectively, were not included in the computation of diluted earnings per share because inclusion of these awards would be anti-dilutive.

REVENUE RECOGNITION

REVENUE RECOGNITION	12 Months Ended
	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
REVENUE RECOGNITION	NOTE 4 — REVENUE RECOGNITION Shipping Revenues Time Charter Revenues The Company enters into time charter contracts under which a customer pays a fixed daily or monthly rate for a fixed period of time for use of a vessel. The Company recognizes revenues from time charters as operating leases ratably over the noncancellable contract term. Customers generally pay voyage expenses such as fuel, canal tolls and port charges. The Company also provides the charterer with services such as technical management expenses and crew costs. While there are lease and service (non-lease) components related to time charter contracts, the predominant component of the contract is the charterer’s lease of the vessel. The non-lease components of the contract have the same timing and pattern of transfer as the underlying lease component; therefore, the Company applies the practical expedient of combining lease and non-lease components and recognizes revenue related to this service ratably over the life of the contract term. Voyage Charter Revenues The Company enters into voyage charter contracts, under which the customer pays a transportation charge (voyage freight) for the movement of a specific cargo between two or more specified ports. The Company’s performance obligation under voyage charters, which consists of moving cargo from a load port to a discharge port, is satisfied over time. Accordingly, under ASC 606, the Company recognizes revenue from voyage charters ratably over the estimated length of each voyage, calculated on a load-to-discharge basis. The transaction price is in the form of a fixed fee at contract inception, which is the transportation charge. Voyage charter contracts also include variable consideration primarily in the form of demurrage, which is additional revenue the Company receives for delays experienced in loading or unloading cargo that are not deemed to be the responsibility of the Company. The Company does not include demurrage in the transaction price for voyage charters since it is highly susceptible to factors outside the Company’s influence. Examples of when demurrage is incurred include unforeseeable weather conditions and security regulations at ports. The uncertainty related to this variable consideration is resolved upon the completion of the voyage, the duration of which is generally less than 30 days. U.S. Maritime Security Program Two of the Company’s U.S. Flag Product Carriers participate in the U.S. Maritime Security Program (“MSP”), which is designed to ensure that privately-owned, military-useful U.S. Flag vessels are available to the U.S. Department of Defense in the event of war or national emergency. The Company considers the MSP contract with the U.S. government a service arrangement under ASC 606. Under this arrangement, the Company receives a stipend pursuant to the Maritime Security Act of 1996 for each participating vessel, subject in each case to annual congressional appropriations. The stipend is intended to reimburse owners for the additional costs of operating U.S. Flag vessels; therefore, the Company has presented this stipend as an offset to vessel expenses. Contracts of Affreightment The Company enters into contracts of affreightment (each a “COA”) to provide transportation services between specified points for a stated quantity of cargo over a specific time period, but without designating voyage schedules. The Company has COA arrangements to provide for lightering services and other arrangements based on the number of voyages. These contracts are service contracts within the scope of ASC 606 for which the underlying performance obligation is satisfied as transportation services are provided. The Company’s COAs include minimum purchase requirements from customers that are expressed in either fixed monthly barrels, annual minimum barrel volume requirements or annual minimum number of voyages to complete. The Company is required to transport and the charterer is required to provide the Company with a minimum volume requirement. These contract minimums represent fixed consideration within the contract which is recognized as the distinct services of delivering barrels or voyages are performed in the series over time. The Company will adjust revenue recognized for any minimum volume unexercised right. COAs provide the charterer with the opportunity to purchase additional transportation services above the minimum. If this is not considered a material right, the Company recognizes revenue related to the additional services at the contractual rate as the product is transferred over time. If the additional transportation service is considered a material right, the Company applies the practical alternative of allocating the transaction price to the material right. As a result, the Company may recognize revenue related to COAs at an amount different from the invoiced amount if the Company’s estimated volume to be transported under the contract exceeds the contractual minimum. COAs also include variable consideration primarily related to demurrage. The Company does not include this variable consideration in the transaction price for these contracts as the consideration is constrained since the obligation to deliver this service is outside the control of the Company. The uncertainty related to this variable consideration is resolved with the customer over the course of the contract term as individual voyages discharge. At December 31, 2020, the Company did not have deferred revenue related to the Company’s COAs. Disaggregated Revenue The Company has disaggregated revenue from contracts with customers into categories that depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. Consequently, the disaggregation below is based on contract type. Since the terms within these contract types are generally standard in nature, the Company does not believe that further disaggregation would result in increased insight into the economic factors impacting revenue and cash flows. The following table shows the Company’s shipping revenues disaggregated by nature of the charter arrangement for the years ended December 31, 2020 and 2019: SCHEDULE OF DISAGGREGATION OF REVENUE Years Ended December 31, 2020 2019 Time and bareboat charter revenues $ 344,512 $ 263,683 Voyage charter revenues (1) 29,752 33,275 Contracts of affreightment revenues 44,428 58,589 Total shipping revenues $ 418,692 $ 355,547 (1) Voyage charter revenues include approximately $ 15,466 and $ 10,152 of revenue related to short-term time charter contracts for the years ended December 31, 2020 and 2019, respectively. Voyage Receivables As of December 31, 2020 and 2019, contract balances from contracts with customers consisted of voyage receivables, including unbilled receivables, of $ 9,351 and $ 5,831 , respectively, net of reserve for doubtful accounts for voyage charters and lightering contracts. For voyage charters, voyage freight is due to the Company upon completion of discharge at the last discharge port. For lightering contracts, the Company invoices the customers based on the actual barrels of cargo lightered. The Company routinely reviews its voyage receivables and makes provisions for probable doubtful accounts; however, those provisions are estimates and actual results could differ from those estimates and those differences may be material. Voyage receivables are removed from accounts receivable and the reserve for doubtful accounts when they are deemed uncollectible. The Company deems voyage receivables uncollectible when the Company has exhausted collection efforts. Costs to Fulfill a Contract Under ASC 606, for voyage charters and contracts of affreightment, the Company capitalizes the direct costs, which are voyage expenses, of relocating the vessel to the load port to be amortized during transport of the cargo. At December 31, 2020, the costs related to voyages that were not yet completed were not material. Additionally, these contracts include out-of-pocket expense (i.e. fuel, port charges, canal tolls) incurred by the Company in fulfilling its performance obligations, which are reimbursed by the charterer at cost. The reimbursement for these fulfillment costs are included in the Company’s estimated transaction price for the contract and recognized as revenue when performance obligations are satisfied. Transaction Price Allocated to the Remaining Performance Obligations As of December 31, 2020, the Company expects to recognize revenue of approximately $ 21,142 in 2021 under COAs. This estimated amount relates to the fixed consideration of contractual minimums within the contracts based on the Company’s estimate of future services. Practical Expedients and Exemptions The Company’s voyage charter contracts and some of the Company’s COAs have an original expected duration of one year or less; therefore, the Company has elected to apply the practical expedient, which permits the Company to not disclose the portion of the transaction price allocated to the remaining performance obligations within these COAs. The Company expenses broker commissions for voyage charters, which are costs of obtaining a contract, as they are incurred because the amortization period is less than one year or are otherwise amortized as the underlying performance obligation is satisfied. The Company records these costs within voyage expenses on the consolidated statements of operations.

VESSELS, OTHER PROPERTY AND DEF

VESSELS, OTHER PROPERTY AND DEFERRED DRYDOCK	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
VESSELS, OTHER PROPERTY AND DEFERRED DRYDOCK	NOTE 5 — VESSELS, OTHER PROPERTY AND DEFERRED DRYDOCK Vessels and other property consist of the following: SCHEDULE OF VESSELS AND OTHER PROPERTY 2020 2019 Years Ended December 31, 2020 2019 Vessels, at cost $ 1,099,187 $ 919,212 Accumulated depreciation (308,449 ) (274,900 ) Vessels, net 790,738 644,312 Construction in progress 17,238 65,697 Finance lease right-of-use asset, at cost (Note 15) 26,940 28,993 Accumulated amortization (Note 15) (2,957 ) (2,053 ) Finance lease right-of use asset, net (Note 15) 23,983 26,940 Other property, at cost 5,552 5,552 Transfers from construction in progress 25 — Accumulated depreciation and amortization (5,362 ) (5,289 ) Other property, net 215 263 Total vessels and other property $ 832,174 $ 737,212 The Company took delivery of two 204,000 -barrel capacity oil and chemical tank barges in 2020, one in May and the other in December. The barges, named the OSG 205 OSG 204 OSG Courageous OSG Endurance In May 2020 and August 2020, the Company sold two of its ATBs for $ 1,407 , net of broker commissions. As a result of the sales, the Company recognized losses, which were not material and are included in loss on disposal of vessels and other property, including impairments, net on the consolidated statements of operations. On March 12, 2020, subsidiaries of OSG, as the Parent Company, completed the purchase of three U.S.-flagged crude oil carrier vessels, the Alaskan Explorer Alaskan Legend Alaskan Navigator 54,000 and have entered into a bareboat charter with BP for a fourth vessel, the Alaskan Frontier On September 30, 2019, the Company took delivery of two 50,000 DWT class product and chemical tankers at Hyundai Mipo Dockyard Co., Ltd. The tankers, named the Overseas Gulf Coast Overseas Sun Coast In September 2019, the Company sold one of its ATBs for $ 1,234 , net of broker commissions. As a result of the sale, the Company recognized an immaterial gain, which is included in loss on disposal of vessels and other property, including impairments, net on the consolidated statements of operations. In May and June 2019, the Company sold two of its ATBs for $ 1,101 and $ 1,069 , respectively, net of broker commissions. As a result of the sales, the Company recognized an immaterial loss, which is included in loss on disposal of vessels and other property, including impairments, net on the consolidated statements of operations. At December 31, 2020, the Company’s owned vessel fleet with a weighted average age of 12.0 years, consisted of six Handysize Product Carriers, three crude oil tankers, two lightering ATBs and two ATBs. Of these vessels, 12 were pledged as collateral under term loan agreements and have an aggregate carrying value of $ 744,760 . Vessel activity, excluding construction in progress, for the two years ended December 31, 2020 is summarized as follows: SUMMARY OF VESSEL ACTIVITY EXCLUDING CONSTRUCTION PROGRESS Vessel Cost Accumulated Depreciation Net Book Value Balance at December 31, 2018 $ 845,868 $ (248,939 ) $ 596,929 Transfers from construction in progress 82,625 — Depreciation — (32,284 ) Disposals (9,281 ) 6,323 Balance at December 31, 2019 919,212 (274,900 ) 644,312 Transfers from construction in progress 111,685 — Additions 74,076 — Depreciation — (37,339 ) Disposals (5,786 ) 3,790 Balance at December 31, 2020 $ 1,099,187 $ (308,449 ) $ 790,738 The total of vessel additions can be different from expenditures for vessels as shown in the consolidated statements of cash flows because of the timing of when payments were made. For the year ended December 31, 2020, the Company had approximately $ 1,820 of non-cash investing activities for the accrual of capital expenditures related to the Company’s vessels. Drydocking activity for the two years ended December 31, 2020 is summarized as follows: SUMMARY OF DRYDOCKING ACTIVITY 2020 2019 Balance at January 1 $ 23,734 $ 26,099 Additions 33,398 11,074 Drydock amortization (13,998 ) (13,439 ) Balance at December 31 $ 43,134 $ 23,734

INVESTMENT IN ALASKA TANKER COM

INVESTMENT IN ALASKA TANKER COMPANY, LLC	12 Months Ended
	Dec. 31, 2020
Investments, All Other Investments [Abstract]
INVESTMENT IN ALASKA TANKER COMPANY, LLC	NOTE 6 — INVESTMENT IN ALASKA TANKER COMPANY, LLC At December 31, 2019, the Company had a 37.5% interest in Alaska Tanker Company, LLC (“ATC”), a joint venture that was formed in 1999 among OSG America Operating Co LLC, Keystone Shipping Company and subsidiaries of British Petroleum (“BP”). Each member of ATC was entitled to receive its respective share of incentive charter hire related to time charter contracts in ATC with a minimum term ending in December 2023 . At December 31, 2019, the carrying value of the Company’s investment in ATC was $ 3,599 3,562 In December 2019, the Company entered into an agreement with BP to purchase three U.S.-flagged crude oil carrier vessels ( Alaskan Explorer Alaskan Legend Alaskan Navigator 54,000 . The Company made a $ 10,800 54,000 under a five-year term loan as discussed in Note 8, “Debt”. In connection with the purchase of the vessels from BP, the Company agreed to time charter arrangements with BP for terms of 2.5 years to 6.4 years at a fixed daily rate with an annual escalation and five renewal options for one year each . The time charter arrangements are treated as operating leases under ASC 842. The Company also entered into a bareboat charter with BP for a fourth vessel, the Alaskan Frontier The Company accounted for the purchase of the three vessels and remaining equity ownership interest in ATC collectively as an asset acquisition, with substantially all the cost of the acquisition attributed to the three vessels purchased from BP. The pre-existing ATC arrangements with a minimum term through December 2023 were terminated, and a non-cash gain equal to the value of the remaining arrangement of $ 19,172 was recognized, with a corresponding increase in the value of the vessels acquired from BP in a manner consistent with how ASC 805, Business Combinations, As part of the acquisition of ATC, the Company assumed liabilities of $ 9,898 8,812 At December 31, 2019, a condensed summary of the assets and liabilities of ATC as an equity method investment was as follows: SUMMARY OF ASSETS AND LIABILITIES OF EQUITY METHOD INVESTMENT 2019 December 31, 2019 Current assets $ 38,531 Total assets $ 38,531 Current liabilities $ 20,667 Noncurrent liabilities 18,867 Deficiency (1,003 ) Total liabilities and equity $ 38,531 For the year ended December 31, 2019, a condensed summary of the results of operations of ATC as an equity method investment was as follows: SUMMARY OF RESULTS OF OPERATIONS OF EQUITY METHOD INVESTMENTS 2019 Year Ended December 31, 2019 Shipping revenues $ 109,006 Ship operating expenses (100,437 ) Income from vessel operations 8,569 Net income $ 9,342 Due to the acquisition of ATC on March 12, 2020, there is no schedule of income attributable to an equity method investment for the Company for the year ended December 31, 2020.

INTANGIBLE ASSETS

INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
INTANGIBLE ASSETS	NOTE 7 — INTANGIBLE ASSETS Intangible assets activity for the two years ended December 31, 2020 is summarized as follows: SCHEDULE OF INTANGIBLE ASSETS Total Balance at December 31, 2018 $ 36,417 Amortization (4,600) Balance at December 31, 2019 31,817 Amortization (4,600) Balance at December 31, 2020 $ 27,217 As discussed in Note 2, “Summary of Significant Accounting Policies,” the Company’s intangible assets at December 31, 2020 and 2019 consist of long-term customer relationships acquired as part of the 2006 purchase of Maritrans, Inc. The gross intangible assets were $ 92,000 at December 31, 2020 and 2019. The unamortized balance of the Company’s intangible assets at December 31, 2020 will be recognized over the remaining useful life, which is six years . Amortization of intangible assets for the five years subsequent to December 31, 2020 is expected to approximate $ 4,600 per year.

DEBT

DEBT	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
DEBT	NOTE 8 — DEBT Debt consists of the following: SCHEDULE OF LONG-TERM DEBT INSTRUMENTS December 31, 2020 2019 Term loan, due 2023 4,676 6,821 $ 252,057 $ 291,994 Term loans, due 2024 426 1,086 22,972 48,289 Alaska tankers term loan, due 2025 623 50,360 — OSG 204 LLC term loan, due 2025 636 31,283 — Term loan, due 2026 73 98 23,171 27,075 OSG 205 LLC and OSG Courageous II LLC term loan, due 2027 564 48,586 — Unsecured senior notes, net of unamortized discount and deferred costs 691 689 Total debt 429,120 368,047 Less current installments of long-term debt (38,922 ) (31,512 ) Total long-term debt $ 390,198 $ 336,535 The weighted average interest rate for debt outstanding at December 31, 2020 and 2019 was 5.21% and 6.55% , respectively. Term Loans Capitalized terms used hereafter have the meaning given in this Annual Report on Form 10-K or in the respective transaction documents referred to below, including subsequent amendments thereto. The COVID-19 pandemic has resulted in a significant reduction in demand for oil and refined petroleum products worldwide which has had a direct impact on our business. In an effort to conserve costs, several of the vessels in our fleet have been placed in layup in late 2020 and 2021. In recognition that certain of the financial covenants that were in place in each of our vessel financing facilities did not appropriately reflect the current situation, in March 2021, the Company obtained waivers and amendments of certain financial covenants in each of its vessel financing facilities, with respect to fourth quarter 2020 and later periods’ compliance requirements. In accordance with the loan amendments, the Company has agreed to sell one of its vessels. Overseas Gulf Coast. In November 2020, two of the Company’s subsidiaries, OSG 205 LLC and OSG Courageous II LLC, entered into a construction loan in the original principal amount of $ 49,150 of which $ 46,711 was drawn down to finance a new 204,000-barrel U.S. Flag oil and chemical ATB barge, OSG 205 OSG Courageous 15,811 , which included accrued interest on its term loan, due 2023 . The aggregate net loss realized on this transaction, which was not material, reflects a write-off of unamortized original issue discount and deferred financing costs associated with the principal reduction and is included in other income, net on the consolidated statements of operations for the year ended December 31, 2020. On December 3, 2020, upon completion and delivery of the OSG 205, 6.37% and has a seven-year term maturing on December 1, 2027 . The lenders hold a perfected first priority security interest and preferred ship mortgage against the barge and tug. In June 2020, one of the Company’s subsidiaries, OSG 204 LLC, entered into a loan with Wintrust Commercial Finance and other syndicate lenders in the aggregate original principal amount of $ 32,933 to finance a new 204,000-barrel U.S. Flag oil and chemical ATB barge. The loan is guaranteed by the Company, bears a fixed rate of interest of 5.00% and has a five-year term maturing on June 1, 2025 . The lenders hold a perfected first priority security interest and preferred ship mortgage against the vessel. In May 2020 and August 2020, in connection with the Company’s sale of two of its ATBs, the Company made mandatory prepayments of $ 1,307 due in 2023 On March 12, 2020, the Company entered into a loan with Banc of America Leasing & Capital, LLC and other syndicate lenders in the aggregate original principal amount of $ 54,000 to finance the purchase of three U.S.-flagged crude oil carrier vessels, the Alaskan Explorer Alaskan Legend Alaskan Navigator 4.43% and has a five-year term maturing on March 12, 2025 . During September 2019, in connection with the Company’s sale of one of its ATBs, the Company made a mandatory prepayment of $ 1,132 on its term loan due in 2023 . The aggregate loss realized on this transaction, which related to the write-off of unamortized deferred finance costs, was not material. In August 2019, two of the Company’s subsidiaries entered into term loans in an aggregate principal amount of $ 50,000 , due 2024, to finance the Overseas Gulf Coast Overseas Sun Coast 45,157 used to fund the final payment for the vessels. The loans bear a fixed rate of interest of 5.54% and have a 5-year term maturing on September 30, 2024 with a 17 -year amortization schedule. On July 30, 2020, the Company repaid, using cash on hand, its $ 24,000 Overseas Gulf Coast During May 2019 and June 2019, in connection with the Company’s sale of two of its ATBs, the Company made mandatory prepayments of $ 1,086 and $ 1,054 , respectively, on its term loan due in 2023 . The aggregate losses realized on these transactions, which related to the write-off of unamortized deferred finance costs, were not material. Term loan, due 2023 – 325,000 December 2023 Term loan, due 2026 – 27,500 November 1, 2026 The applicable margins and floor interest rates for the Company’s term loan, due 2023, and term loan, due 2026, are as follows: SCHEDULE OF FACILITY OF TERM LOAN Debt Facility Term loan, due 2023 Term loan, due 2026 Rate ABR LIBOR ABR LIBOR Floor None 0.00% None 0.00% Applicable Margin None 4.00% None 5.00% Unsecured Senior Notes 7.5% Notes – These notes were issued on March 7, 2003 and consisted of $ 146,000 in face value, which were due on February 15, 2024 . Pursuant to the Equity Plan, the Company issued two series of 7.50% Notes due February 15, 2021 , one series in an aggregate principal amount of $ 6,508 (the “Election 1 Notes”) and the other series in an aggregate principal amount of $ 138,708 (the “Election 2 Notes” and together with the Election 1 Notes, the “Election Notes”) to holders of the 7.50% Notes due 2024 (the “2024 Notes”) that elected to receive Election 1 Notes or Election 2 Notes, as the case may be. The outstanding Election 1 notes were repurchased and retired during the year ended December 31, 2015. The Election 2 Notes have substantially the same terms as the 2024 Notes, other than the (i) maturity date and (ii) definitions and provisions related to a holder’s right to require the Company to repurchase such holder’s Election 2 Notes upon the occurrence of certain changes in the ownership or control of OSG. The Election 2 Notes accrue interest at the rate of 7.50% per annum. Interest Expense The following table summarizes interest expense, including amortization of issuance and deferred financing costs, commitment, administrative and other fees, recognized during the two years ended December 31, 2020 with respect to the Company’s debt facilities: SCHEDULE OF DEBT EXPENSES Years Ended December 31, Debt Facility 2020 2019 Term loan, due 2023 $ 18,132 $ 24,667 Term loan, due 2024 2,383 785 Alaska tankers term loan, due 2025 2,014 — OSG 204 LLC term loan, due 2025 1,365 — Term loan, due 2026 1,209 1,772 OSG 205 LLC and OSG Courageous II LLC term loan, due 2027 374 — Unsecured senior notes 302 156 OBS Facilities — 428 Total interest expense on debt facilities $ 25,779 $ 27,808 Cash paid for interest expense was $ 23,134 and $ 24,593 in the years ended December 31, 2020 and 2019, respectively. As of December 31, 2020, the aggregate annual principal payments required to be made on the Company’s debt are as follows: SCHEDULE OF AGGREGATE ANNUAL PRINCIPAL PAYMENTS 2020 2021 $ 38,922 2022 39,120 2023 221,388 2024 33,054 2025 62,452 Thereafter 41,179 Total $ 436,115

FAIR VALUE MEASUREMENTS AND FAI

FAIR VALUE MEASUREMENTS AND FAIR VALUE DISCLOSURES	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS AND FAIR VALUE DISCLOSURES	NOTE 9 — FAIR VALUE MEASUREMENTS AND FAIR VALUE DISCLOSURES ASC 820, Fair Value Measurements and Disclosures The levels of the fair value hierarchy established by ASC 820 are as follows: Level 1 - Quoted prices in active markets for identical assets or liabilities Level 2 - Quoted prices for similar assets and liabilities in active markets or inputs that are observable Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities Financial Instruments that are not Measured at Fair Value on a Recurring Basis The following methods and assumptions were used to estimate the fair value of each class of financial instrument. Cash and cash equivalents and restricted cash— Debt— The estimated fair values of the Company’s financial instruments that are not measured at fair value on a recurring basis, categorized based upon the fair value hierarchy, at December 31, 2020 and 2019, are as follows: SCHEDULE OF HIERARCHY CATEGORIZED ON FAIR VALUE Carrying Fair Value Value Level 1 Level 2 December 31, 2020: Assets Cash and cash equivalents (1) $ 69,819 $ 69,819 $ — Total $ 69,819 $ 69,819 $ — Liabilities Term loan, due 2023, net $ 252,057 $ — 257,228 Term loan, due 2024, net 22,972 — 23,535 Alaska tankers term loan, due 2025, net 50,360 — 49,357 OSG 204 LLC term loan, due 2025, net 31,283 — 31,562 Term loan, due 2026, net 23,171 — 21,921 OSG 205 LLC and OSG Courageous II LLC term loan, due 2027, net 48,586 — 52,199 Unsecured senior notes, net 691 — 715 Total $ 429,120 $ — $ 436,517 Carrying Fair Value Value Level 1 Level 2 December 31, 2019: Assets Cash (1) $ 41,677 $ 41,677 $ — Total $ 41,677 $ 41,677 $ — Liabilities Term loan, due 2023, net $ 291,994 $ — $ 299,974 Term loan, due 2024, net 48,289 — 49,015 Term loan, due 2026, net 27,075 — 27,359 Unsecured senior notes, net 689 — 722 Total $ 368,047 $ — $ 377,070 (1) Includes current and non-current restricted cash totaling $ 122 and $ 174 at December 31, 2020 and 2019, respectively. Restricted cash as of December 31, 2020 and 2019 was related to the Company’s Unsecured Senior Notes. Nonfinancial Instruments that are Measured at Fair Value on a Nonrecurring Basis Vessel Impairments There were no vessels measured at fair value during the years ended December 31, 2020 and 2019. During the first and second quarters of 2020, the Company established terms to sell for scrap the OSG 243, OSG Independence OSG 244 Valuation of Intangible Assets The Company’s intangible assets at December 31, 2020 and 2019 consisted of long-term customer relationships acquired as part of the 2006 purchase of Maritrans, Inc. The long-term customer relationships are being amortized on a straight-line basis over 20 years. During the years ended December 31, 2020 and 2019, the Company gave consideration as to whether events or changes in circumstances had occurred that could indicate the carrying value of the Company’s intangible assets may not be recoverable. The Company concluded that no such events or changes in circumstances had occurred.

ACCOUNTS PAYABLE, ACCRUED EXPEN

ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	12 Months Ended
	Dec. 31, 2020
Payables and Accruals [Abstract]
ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	NOTE 10 — ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES SCHEDULE OF ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES 2020 2019 Years Ended December 31, 2020 2019 Accounts payable $ 8,717 $ 5,944 Payroll and benefits 14,184 8,660 Interest 1,752 1,828 Insurance 1,040 673 Accrued drydock and repair costs 2,371 115 Bunkers and lubricants 725 852 Charter revenues received in advance 8,677 11,580 Accrued vessel expenses 9,642 3,441 Accrued general and administrative, primarily professional fees 307 799 Other 674 1,984 Accounts Payable and Other Accrued Liabilities, Current $ 48,089 $ 35,876

TAXES

TAXES	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
TAXES	NOTE 11 — TAXES The expense for income taxes on income before income taxes consists of the following: SCHEDULE OF INCOME TAX (EXPENSE)/BENEFIT 2020 2019 Years Ended December 31, 2020 2019 Current - Federal $ 161 $ — Current - State (48 ) — Current — (1,527 ) Deferred – Federal (5,401 ) — Deferred - State (897 ) — Deferred — 991 Total $ (6,185 ) $ (536 ) The reconciliations between the U.S. federal statutory income tax rate and the effective tax rate follows: SCHEDULE OF EFFECTIVE INCOME TAX RATE RECONCILIATION Years Ended December 31, 2020 2019 U.S. federal statutory income tax rate 21.0 % 21.0 % Adjustments due to: State taxes, net of federal benefit 2.9 % (8.9 )% Change in valuation allowance 0.1 % 0.6 % Equity awards 0.1 % (1.8 )% Return to provision 0.5 % (4.5 )% Nondeductible expenses 0.1 % 0.4 % Uncertain tax positions and tax examination settlement (1.9 )% 6.8 % U.S. income subject to tonnage tax (3.8 )% (6.5 )% Other (1.9 )% (1.3 )% Effective tax rate 17.1 % 5.8 % During 2020, $ 6,500 of income from the Overseas Mykonos Overseas Santorini (3.8)% impact on the Company’s effective tax rate. The significant components of the Company’s deferred tax liabilities and assets follow: SCHEDULE OF DEFERRED TAX ASSETS AND LIABILITIES 2020 2019 December 31, 2020 2019 Deferred tax liabilities: Vessels and other property (1) $ 124,304 $ 128,026 Prepaid expenditures 9,130 5,621 Operating lease right-of-use assets 55,754 72,298 Other-net — 2 Total deferred tax liabilities 189,188 205,947 Deferred tax assets: Loss carryforwards 64,487 68,917 Operating lease liability 55,426 71,779 Finance lease liability 5,754 6,333 Employee compensation and benefit plans 2,456 3,869 Financing and professional fees 15 2,003 Accrued expenses and other 1,062 1,165 Total deferred tax assets 129,200 154,066 Valuation allowance (21,004 ) (20,952 ) Net deferred tax assets 108,196 133,114 Net deferred tax liabilities $ 80,992 $ 72,833 (1) Includes deferred tax liabilities related to finance lease right-of-use assets totaling $ 5,441 6,190 As of December 31, 2020, the Company had U.S. federal net operating loss carryforwards of $ 193,300 which are available to reduce future taxes, if any. The federal net operating loss carryforwards begin to expire in 2034 . Additionally, as of December 31, 2020, the Company had U.S. state net operating loss carryforwards of $ 435,013. These U.S. state net operating loss carryforwards expire in various years from December 31, 2021 through December 31, 2035 . Included in the financing and professional fees deferred income assets above are U.S. federal interest expense deductions with an indefinite carryforward period. The Company assessed all available positive and negative evidence to determine whether sufficient future taxable income will be generated to permit use of existing deferred tax assets. For U.S. federal deferred tax assets, the Company concluded that sufficient positive evidence existed, primarily the result of reversing deferred tax liabilities during the carryover period. However, for certain state deferred tax assets, the negative evidence has outweighed the positive evidence which has resulted in the Company establishing a valuation allowance of $ 21,004 and $ 20,952 as of December 31, 2020 and 2019, respectively, to recognize only the portion of the deferred tax asset that is more likely than not to be realized. During the years ended December 31, 2020 and 2019, the Company received refunds (net of payments made) of $ 5,695 1,293 , respectively, of income taxes. The following is a tabular reconciliation of the total amounts of unrecognized tax benefits (excluding interest and penalties): SCHEDULE OF UNRECOGNIZED TAX BENEFITS Years Ended December 31, 2020 2019 Balance of unrecognized tax benefits as of January 1, $ 2,495 $ 1,226 (Decreases)/increases for positions taken in prior years (1,177 ) 1,353 Decreases due to settlements with taxing authorities (505 ) — Rate change — (84 ) Balance of unrecognized tax benefits as of December 31, $ 813 $ 2,495 Included in the balance of unrecognized tax benefits as of December 31, 2020 and 2019 are $ 813 2,495 , respectively, of tax benefits that, if recognized would affect the effective tax rate. The Company records interest and penalties on unrecognized tax benefits in its provision for income taxes. Accrued interest and penalties are included within the related liability for unrecognized tax benefit line on the consolidated balance sheets. During the years ended December 31, 2020 and 2019, the Company accrued interest and recorded liabilities for interest and penalties were not material. After taking into consideration tax attributes, such as net operating loss carryforwards and interest, the Company’s unrecognized tax benefits represent a noncurrent reserve for uncertain tax positions of $ 189 864 as of December 31, 2020 and 2019, respectively. The U.S. Internal Revenue Service completed exams on the Company’s U.S. federal income tax returns for years 2012 - 2015. With few exceptions, the Company is no longer subject to state and local income tax examinations by tax authorities for years before 2016. The Company conducts business and files income tax returns in numerous states. Currently, one of the Company’s state tax returns is under examination by a state as part of routine audits conducted in the ordinary course of business. The future utilization of state net operating losses could potentially subject the Company to state examinations prior to the otherwise applicable statute of limitation. States vary in carryforward periods but generally extend up to 20 years or a period consistent with the federal limits under the Tax Cuts and Jobs Act.

RELATED PARTIES

RELATED PARTIES	12 Months Ended
	Dec. 31, 2020
Related Party Transactions [Abstract]
RELATED PARTIES	NOTE 12 — RELATED PARTIES Guarantees International Seaways, Inc. (“INSW”) entered into guarantee arrangements in connection with the spin-off from OSG on November 30, 2016. On October 7, 2019, INSW sold its ownership interest in their joint venture with Qatar Gas Transport Company Ltd, releasing OSG from all obligations under the guarantee arrangements.

CAPITAL STOCK AND STOCK COMPENS

CAPITAL STOCK AND STOCK COMPENSATION	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
CAPITAL STOCK AND STOCK COMPENSATION	NOTE 13 — CAPITAL STOCK AND STOCK COMPENSATION Ownership Restrictions In order to preserve the status of OSG as a Jones Act company, the percentage of each class of its common stock that may be owned by non-U.S. citizens is limited. In addition, the Company has established policies and procedures to ensure compliance with the Jones Act. In order to provide a reasonable margin for compliance with the Jones Act, our Board of Directors has determined that until further action by our Board, at least 77% of the outstanding shares of each class of capital stock of the Company must be owned by U.S. citizens. At and during such time that the limit is reached with respect to shares of Class A common stock as applicable, we will be unable to issue any further shares of such class of common stock or approve transfers of such class of common stock to non-U.S. citizens until the holdings of non-U.S. citizens falls below the maximum percentage allowable. Share Repurchases During the years ended December 31, 2020 and 2019, in connection with the vesting of restricted stock units (“RSUs”), the Company withheld 104,552 and 159,685 , respectively, shares of Class A common stock at an average price of $ 1.90 and $ 1.84 per share (based on the market prices on the dates of vesting), respectively, from certain members of management to cover withholding taxes. Warrant Conversions Each Class A warrant represents the right to purchase one share of Class A common stock, subject in each case to the adjustments as provided pursuant to the terms thereof. The warrants may be exercised at a price per share of Class A common stock, as applicable, of $ 0.01 , which shall be paid pursuant to a cashless exercise procedure. Warrants may be exercised at any time or from time to time on or before August 5, 2039 and will expire thereafter. Until they exercise their warrants, except as otherwise provided in the warrants, the holders of the warrants will not have the rights or privileges of holders of the Company’s common stock, including any voting rights. Warrants may only be exercised by holders who establish to OSG’s reasonable satisfaction that they or the person designated to receive the shares is a U.S. person or to the extent shares deliverable upon exercise would not constitute Non-Complying Shares (as defined in OSG’s Amended and Restated Certificate of Incorporation). As of December 31, 2020, the Company had 19,235,764 Class A warrants outstanding, convertible into 3,654,795 shares of Class A common stock. During the years ended December 31, 2020 and 2019, the Company issued 473 and 257,963 shares of Class A common stock, respectively, as a result of the exercise of 2,498 and 1,365,392 Class A warrants, respectively. Incentive Plans On September 23, 2014, the Company’s Compensation Committee (“the Committee”) approved the Overseas Shipholding Group, Inc. Management Incentive Compensation Plan (the “Management Compensation Plan”) and the Overseas Shipholding Group, Inc. Non-Employee Director Incentive Compensation Plan (the “Director Plan”). OSG stockholders approved these plans on June 9, 2015. On June 6, 2017, at the annual stockholders meeting, the Company’s stockholders approved an increase to the maximum number of shares for issuance under the Director Plan by 1,500,000 shares. The 2019 Incentive Compensation Plan for Management was approved by the Committee on March 22, 2019, by our Board on April 4, 2019 and then by the Company’s stockholders at the annual meeting on May 30, 2019 (together with the Management Compensation Plan and Non-employee Director Incentive Compensation Plan, the “Incentive Plans”). The Incentive Plans contain anti-dilution provisions whereby in the event of any change in the capitalization of the Company, the number and type of securities underlying outstanding share-based payment awards must be adjusted, as appropriate, in order to prevent dilution or enlargement of rights. The impact of these provisions resulted in a modification of all outstanding share-based payment awards upon the stock dividend, reverse stock split and spin-off transactions. As the fair value of the awards immediately after the stock dividend, reverse stock split and spin off transactions, did not increase when compared to the fair value of such awards immediately prior to such transactions, no incremental compensation costs were recognized as a result of such modifications. The purpose of the Incentive Plans is to promote the interests of the Company and its stockholders by providing certain employees and members of the Board, who are largely responsible for the management, growth and protection of the business of the Company, with incentives and rewards to encourage them to continue in the service of the Company. The Incentive Plans permit the Committee to grant to eligible employees and directors of the Company, as applicable, any of the following types of awards (or any combination thereof): cash incentive awards, nonqualified stock options, incentive stock options and other stock-based awards, including, without limitation, stock appreciation rights, phantom stock, restricted stock, restricted stock units, performance shares, deferred share units and share-denominated performance units. Stock Compensation The Company accounts for stock compensation expense in accordance with the fair value based method required by ASC 718, Compensation – Stock Compensation Director Compensation - Restricted Stock Units The Company awarded a total of 321,000 and 357,866 RSUs for the years ended December 31, 2020 and 2019, respectively, to its non-employee directors. The weighted average fair value of the Company’s stock on the measurement date of such awards was $ 2.25 (2020) and $ 1.78 (2019) per share. Such RSUs vest in full on the earlier of the next annual meeting of the stockholders or the first anniversary of the grant date, subject to each director continuing to provide services to the Company through such date. The RSUs granted may not be transferred, pledged, assigned or otherwise encumbered prior to vesting. Upon vesting, a holder of restricted share awards has all the rights of a stockholder of the Company, including the right to vote such shares and the right to receive dividends paid with respect to such shares at the same time as common stockholders generally. RSUs which have not become vested as of the date the grantee’s service on the Board of Directors terminates will be forfeited and the grantee will have no further rights with respect to the RSUs. Management Compensation Restricted Stock Units During the years ended December 31, 2020 and 2019, the Company awarded 764,406 and 552,598 time-based RSUs to certain of its employees, including senior officers. The average grant date fair value of these awards was $ 2.03 (2020) and $ 2.02 (2019), per RSU. Each RSU represents a contingent right to receive one share of Class A common stock upon vesting. Each award of RSUs will vest in equal installments on each of the first three anniversaries of the grant date. RSUs may not be transferred, pledged, assigned or otherwise encumbered until they are settled. Settlement of vested RSUs may be in either shares of Class A common stock or cash, as determined at the discretion of the Human Resources and Compensation Committee, and will occur as soon as practicable after the vesting date. If the RSUs are settled in shares of common stock, following the settlement of such shares, the grantee will be the record owner of the shares of Class A common stock and will have all the rights of a shareholder of the Company, including the right to vote such shares and the right to receive dividends paid with respect to such shares of Class A common stock. RSUs which have not become vested as of the date of a grantee’s termination from the Company will be forfeited without the payment of any consideration, unless otherwise provided for. In addition, during the year ended December 31, 2019, the Company awarded 329,121 shares to certain of its senior officers of the Company’s common stock, net of all taxes, which vested immediately. The average grant date fair value of these awards was $ 1.82 . During the years ended December 31, 2020 and 2019, the Company awarded 582,224 and 352,258 performance-based RSUs to its senior officers, respectively. Each performance-based RSU represents a contingent right to receive RSUs based upon continuous employment through the end of a three-year performance period and will vest as follows: (i) one-half of the target RSUs will vest and become nonforfeitable subject to OSG’s return on invested capital (“ROIC”) performance in the three-year ROIC performance period relative to a target rate (the “ROIC Target”) set forth in the award agreements (which define ROIC as net operating profit after taxes divided by the net of total debt plus shareholders equity less cash); and (ii) one-half of the target RSUs will be subject to OSG’s three-year total shareholder return (“TSR Target”) performance relative to that of a performance index over a three-year TSR performance period. The performance index consists of companies that comprise a combination of the oil and gas storage and transportation and marine GICS sub-industries indexes during the performance period. Vesting is subject in each case to certification by the Human Resources and Compensation Committee of the Parent Company’s Board of Directors as to achievement of the performance measures and targets. The ROIC Target RSU awards and the TSR Target RSU awards are subject to an increase up to a maximum of 291,112 and 176,129 target RSUs combined, respectively, ( 873,340 and 528,387 RSUs in total, respectively) or decrease, depending on performance against the applicable measure and targets. The ROIC performance goal is a performance condition which, as of December 31, 2020, management believed was probable of being achieved. Accordingly, for financial reporting purposes, compensation costs have been recognized for these awards. The grant date fair value of the TSR based performance awards, which have a market condition, was determined to be $ 2.03 and $ 2.02 per RSU, respectively. For the Incentive Plans, compensation expense is recognized over the vesting period, contingent or otherwise, applicable to each grant, using the straight-line method. Compensation expense as a result of the RSUs described above was $ 2,321 1,615 Stock Options During the year ended December 31, 2019, the Company awarded 612,745 stock options to one of its senior officers, which vested immediately. Each stock option represents an option to purchase one share of Class A common stock for an exercise price of $ 1.89 per share. The call option value of the options was $ 1.02 per option. Under the grant agreement, the stock options have a holding requirement until the earliest to occur of (i) a change in control; (ii) the separation from service date, in the event of a termination of the grantee’s employment by the Company without cause or by the grantee for good reason and (iii) the third anniversary of the grant date. The stock options expire on the business day immediately preceding the tenth anniversary of the award date. If a stock option grantee’s employment is terminated for cause (as defined in the applicable Form of Grant Agreement), stock options (whether then vested or exercisable or not) will lapse and will not be exercisable. If a stock option grantee’s employment is terminated for reasons other than cause, the option recipient may exercise the vested portion of the stock option but only within such period of time ending on the earlier to occur of (i) the 90th day ending after the option holder’s employment terminated and (ii) the expiration of the options, provided that if the option holder’s employment terminates for death or disability the vested portion of the option may be exercised until the earlier of (i) the first anniversary of employment termination and (ii) the expiration date of the options. The fair value of the options granted were estimated on the date of grant using the Black-Scholes option pricing model with the following weighted average assumptions for the 2019 grant: risk free interest rates of 2.50 %, dividend yield of 0.0 %, expected stock price volatility factor of .55 and expected life of 6.0 years. The Black-Scholes option valuation model was developed for use in estimating the fair value of traded options that have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions, including the expected stock price volatility. Since the Company’s stock options have characteristics significantly different from those of traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, in management’s opinion, the existing models do not necessarily provide a reliable single measure of the fair value of its stock options. Activity with respect to restricted stock units under the Incentive Plans during the two years ended December 31, 2020 is summarized as follows: SCHEDULE OF RESTRICTED STOCK UNITS UNDER INCENTIVE PLANS Activity for the two years ended December 31, 2020 Class A common Nonvested Shares Outstanding at December 31, 2018 912,315 Granted 1,591,839 Vested ($ 1.66 2.32 (780,542 ) Forfeited ($ 1.63 (4,747 ) Nonvested Shares Outstanding at December 31, 2019 1,718,865 Nonvested Shares Outstanding at January 01, 2020 1,718,865 Granted 1,667,633 Vested ($ 1.74 2.32 (755,898 ) Forfeited ($ 1.74 2.27 (25,337 ) Nonvested Shares Outstanding at December 31, 2020 2,605,263 Activity with respect to stock options under the Incentive Plans during the two years ended December 31, 2020 is summarized as follows: SCHEDULE OF STOCK OPTIONS ACTIVITY UNDER INCENTIVE PLANS Activity for the two years ended December 31, 2020 Class A common Options Outstanding at December 31, 2018 866,011 Granted 612,745 Options Outstanding at December 31, 2019 1,478,756 Options Outstanding at January 01, 2020 1,478,756 Granted 612,745 Options Outstanding at December 31, 2020 1,478,756 Options Exercisable at January 01, 2020 - Granted - Options Exercisable at December 31, 2020 1,478,756 The weighted average remaining contractual life of the outstanding stock options at December 31, 2020 was 7.18 years. The range of exercise prices of the stock options outstanding at December 31, 2020 was between $ 1.70 and $ 5.57 per share. The weighted average exercise price of the stock options outstanding was $ 2.67 per share at both December 31, 2020 and 2019. Compensation expense as a result of the grants of stock options described above was not material for the years ended December 31, 2020 and 2019. As of December 31, 2020, there was $ 3,048 of unrecognized compensation cost related to nonvested share-based compensation arrangements. That cost is expected to be recognized over a weighted average period of 1.72 years.

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE LOSS	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE LOSS	NOTE 14 — ACCUMULATED OTHER COMPREHENSIVE LOSS The components of accumulated other comprehensive loss, net of related taxes at an effective tax rate of 17.1% SCHEDULE OF COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE LOSS Years Ended December 31, 2020 2019 Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement benefit plans) $ (282 ) $ (6,409 ) $ (282 ) $ (6,409 ) The following tables present the changes in the balances of each component of accumulated other comprehensive loss, net of related taxes, for the two years ended December 31, 2020. SCHEDULE OF CHANGES IN BALANCES OF COMPONENT OF ACCUMULATED OTHER COMPREHENSIVE LOSS Items not yet Balance as of December 31, 2019 $ (6,409 ) Current period change, excluding amounts reclassified from accumulated other comprehensive loss 5,935 Amounts reclassified from accumulated other comprehensive loss 192 Total change in accumulated other comprehensive loss 6,127 Balance as of December 31, 2020 $ (282 ) Balance as of December 31, 2018 $ (7,192 ) Current period change, excluding amounts reclassified from accumulated other comprehensive loss 501 Amounts reclassified from accumulated other comprehensive loss 282 Total change in accumulated other comprehensive loss 783 Balance as of December 31, 2019 $ (6,409 ) The following table presents information with respect to amounts reclassified out of accumulated other comprehensive loss for the two years ended December 31, 2020. SCHEDULE OF AMOUNTS RECLASSIFIED OUT OF ACCUMULATED OTHER COMPREHENSIVE LOSS Years Ended December 31, Accumulated Other Comprehensive Loss Component 2020 2019 Statement of Operations Line Item Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement plans): Net periodic benefit costs associated with pension and postretirement benefit plans for shore-based employees $ 424 $ 570 Other income, net Net periodic benefit costs associated with pension and postretirement benefit plans for seagoing employees (174 ) (201 ) Other income, net 250 369 Total before tax (58 ) (87 ) Tax provision $ 192 $ 282 Total net of tax The following amounts are included in accumulated other comprehensive loss at December 31, 2020, which have not yet been recognized in net periodic cost: unrecognized prior service credits of $ 7,606 ($ 6,575 net of tax) and unrecognized actuarial losses $ 7,869 ($ 6,857 net of tax). The income tax (expense)/benefit allocated to each component of other comprehensive income follows: SCHEDULE OF INCOME TAX (EXPENSE) BENEFIT ALLOCATED TO COMPONENT Items not yet recognized For the year ended December 31, 2020: Current period change excluding amounts reclassified from accumulated other comprehensive loss $ (1,803 ) Amounts reclassified from accumulated other comprehensive loss (58 ) Total change in accumulated other comprehensive loss $ (1,861 ) For the year ended December 31, 2019: Current period change excluding amounts reclassified from accumulated other comprehensive loss $ (154 ) Amounts reclassified from accumulated other comprehensive loss (87 ) Total change in accumulated other comprehensive loss $ (241 )

LEASES

LEASES	12 Months Ended
	Dec. 31, 2020
Leases [Abstract]
LEASES	NOTE 15 — LEASES The Company’s lease portfolio is comprised of vessels chartered-in, office space and equipment under agreements with contractual periods ranging from less than one year to 15 years. Many of the Company’s leases contain one or more options to extend. The Company includes options that it is reasonably certain to exercise in its evaluation of the lease term after considering all relevant economic and financial factors and calculates the initial lease liability as the present value of fixed payments, or in substance fixed payments, not yet paid and variable payments that are based on an index (e.g., CPI), measured at commencement. Leases are discounted using the Company’s incremental borrowing rate adjusted for risk based on the length of the lease term because the rate implicit in the lease is not readily determinable. The Company made the accounting policy election to keep leases with a term of 12 months or less off the balance sheet. The Company’s lease right-of-use assets and lease liabilities at December 31, 2020 and 2019 were as follows: SCHEDULE OF LEASE RIGHT-OF-USE ASSETS AND LEASE LIABILITIES December 31, 2020 2019 Operating leases Vessels chartered-in noncurrent operating lease assets $ 213,414 $ 283,871 Office space noncurrent operating lease assets 2,403 2,598 Total noncurrent operating lease assets $ 215,817 $ 286,469 Vessels chartered-in operating lease liabilities Current portion of operating lease liabilities $ 89,889 $ 89,537 Noncurrent operating lease liabilities 145,302 217,511 235,191 307,048 Office space operating lease liabilities Current portion of operating lease liabilities 724 608 Noncurrent operating lease liabilities 1,852 1,990 2,576 2,598 Total operating lease liabilities $ 237,767 $ 309,646 Finance lease Vessels and other property $ 26,940 $ 28,993 Accumulated amortization (2,957 ) (2,053 ) Vessels and other property, less accumulated amortization $ 23,983 $ 26,940 Current portion of finance lease liabilities $ 4,000 $ 4,011 Noncurrent finance lease liabilities 21,360 23,548 Total finance lease liabilities $ 25,360 $ 27,559 Charters-in As of December 31, 2020, the Company had commitments to charter-in 12 vessels, which are all bareboat charters. On March 12, 2020, the Company commenced a bareboat charter for the Alaskan Frontier three years. Based on the length of the lease term and the remaining economic life of the vessel, it is accounted for as an operating lease. For the remaining 11 chartered-in vessels, 10 vessels are accounted for as operating leases and one vessel is accounted for as a finance lease. The right-of-use asset accounted for as a finance lease arrangement is reported in vessels and other property, less accumulated depreciation on our consolidated balance sheets. The Company holds options for 11 of the vessels chartered-in. For one vessel, the option can be exercised for 3-years and is available indefinitely. For the remaining 10 vessels, the options can be exercised for one, three or five years with the one-year option only usable once, while the three- and five-year options are available indefinitely. The lease payments for the charters-in are fixed throughout the option periods and the options are on a vessel-by-vessel basis that can be exercised individually. The Company exercised its option on one of its vessels to extend the term until June 2025. On December 10, 2018, the Company exercised its options to extend the terms of nine vessels. Terms for five of the vessels were extended for an additional three years, with terms ending in December 2022, and terms for four of the vessels were extended for an additional year, with terms ending December 2020. On December 11, 2019, the terms for the four vessels ending December 2020 were extended for an additional three years, with terms ending in December 2023. Five of the Company’s chartered in vessels contain a deferred payment obligation (“DPO”) which relates to charter hire expense incurred by the Company in prior years and payable to the vessel owner in future periods. This DPO is due in quarterly installments with the final quarterly payment due upon lease termination. The future minimum commitments under these leases are as follows: SCHEDULE OF FUTURE MINIMUM LEASE COMMITMENTS UNDER MINIMUM LEASE PAYMENTS At December 31, 2020 Operating Leases Finance Lease 2021 $ 91,849 $ 4,161 2022 108,338 4,161 2023 43,388 4,161 2024 9,168 4,172 2025 4,534 4,161 Thereafter — 13,019 Net minimum lease payments 257,277 33,835 Less present value discount (22,086 ) (8,475 ) Total lease liabilities $ 235,191 $ 25,360 The bareboat charters-in provide for variable lease payments in the form of profit share to the owners of the vessels calculated in accordance with the respective charter agreements or based on time charter sublease revenue. Because such amounts and the periods impacted are not reasonably estimable, they are not currently reflected in the table above. Due to reserve funding requirements and current rate forecasts, no profits are currently expected to be paid to the owners in respect of the charter term within the next year. For the years ended December 31, 2020 and 2019, lease expense for the Company’s chartered-in vessels accounted for as operating leases was $ 90,608 and $ 90,359 , respectively, which is included in charter hire expense on the consolidated statements of operations and operating cash flows on the consolidated statements of cash flows. The Company recognized sublease income of $ 197,546 and $ 188,163 , respectively, for the years ended December 31, 2020 and 2019. For the years ended December 31, 2020 and 2019, the Company had non-cash operating activities of $ 1,533 and $ 93,407 , respectively, for obtaining operating right-of-use assets and liabilities. For the years ended December 31, 2020 and 2019, lease expense related to the Company’s finance lease was $ 2,957 and $ 2,052 , respectively, related to amortization of the right-of-use asset and $ 1,973 and $ 1,462 , respectively, related to interest on the lease liability. These are included in operating cash flows on the consolidated statements of cash flows. For the year ended December 31, 2019, the Company had non-cash financing activities of $ 28,993 for obtaining finance right-of-use assets. Office space The Company has lease obligations for office space that generally require fixed annual rental payments and may also include escalation clauses and renewal options. The future minimum commitments under lease obligations for office space, which are operating leases, as of December 31, 2020 are as follows: SCHEDULE OF FUTURE MINIMUM LEASE COMMITMENTS UNDER MINIMUM LEASE PAYMENTS At December 31, 2020 Amount 2021 $ 748 2022 780 2023 609 2024 168 2025 100 Thereafter 988 Net minimum lease payments 3,393 Less present value discount (817 ) Total lease liabilities $ 2,576 For the years ended December 31, 2020 and 2019, the rental expense for office space, which is included in general and administrative expenses on the consolidated statements of operations, was $ 851 and $ 648 , respectively. For the years ended December 31, 2020 and 2019, cash paid for office space rental was $ 739 and $ 604 , respectively, which is included in operating cash flows on the consolidated statements of cash flows. Supplemental balance sheet information related to leases was as follows: SCHEDULE OF SUPPLEMENTAL BALANCE SHEET INFORMATION RELATED TO LEASES December 31, 2020 2019 Weighted average remaining lease term - operating leases 2.8 years 3.7 years Weighted average discount rate - operating leases 6.5 % 6.7 % Weighted average remaining lease term - finance lease 8.1 years 9.1 years Weighted average discount rate - finance lease 7.3 % 7.3 % Charters-out The Company enters into time charter contracts under which a customer pays a fixed daily or monthly rate for a fixed period of time for use of a vessel. The Company recognizes revenues from time charters as operating leases ratably over the noncancelable contract term. Under certain time charter contracts, the Company receives variable lease payments based on a defined profit share arrangement, which are recognized as revenue in the period in which the changes in facts and circumstances on which the variable lease payments are based occur. Customers generally pay voyage expenses such as fuel, canal tolls and port charges. The Company also provides the charterer with services such as technical management and crew costs. Services are recognized ratably over the life of the contract term. The Company is the lessor under its time charter contracts. Certain time charter contracts provide the charterer with the option to extend the contract for a specific period of time. For time charters, the Company applied the practical expedient to combine the lease and non-lease components for these contracts. Total time charter revenue for the years ended December 31, 2020 and 2019 was equal to lease income from lease payments of $ 343,290 and $ 263,416 , respectively, plus straight-line adjustments of $ 1,222 and $ 267 , respectively. The net book value of owned vessels on noncancelable time charters was equal to $ 284,259 at December 31, 2020. The future minimum revenues, including rent escalations, which is equal to lease payments expected to be received over the noncancelable time charters term are as follows: SCHEDULE OF FUTURE MINIMUM COMMITMENTS OPERATING LEASES 2020 At December 31, 2020 Amount 2021 $ 177,352 2022 139,994 2023 102,058 2024 97,736 2025 63,985 Thereafter 14,357 Net minimum lease receipts $ 595,482 Revenues from a time charter are not generally received when a vessel is off-hire, including time required for normal periodic maintenance of the vessel. In arriving at the minimum future charter revenues, an estimated time off-hire to perform periodic maintenance on each vessel has been deducted, although it cannot be assured that such estimate will be reflective of the actual off-hire in the future.

PENSION, OTHER POSTRETIREMENT B

PENSION, OTHER POSTRETIREMENT BENEFIT PLANS AND BENEFIT LIABILITIES	12 Months Ended
	Dec. 31, 2020
Retirement Benefits [Abstract]
PENSION, OTHER POSTRETIREMENT BENEFIT PLANS AND BENEFIT LIABILITIES	NOTE 16 — PENSION, OTHER POSTRETIREMENT BENEFIT PLANS AND BENEFIT LIABILITIES For the years ended December 31, 2020 and 2019, pension and other benefit liabilities are included in other liabilities on the consolidated balance sheets. Pension Plans In connection with the November 2006 acquisition of Maritrans, the Company assumed the obligations under the defined benefit retirement plan of Maritrans Inc. (“the Maritrans Plan”). As of December 31, 2006, the Company froze the benefits under the Maritrans Plan. At December 31, 2020, the Maritrans Plan is the only defined benefit pension plan in existence at the Company. The Maritrans Plan was noncontributory and covered substantially all shore-based employees and substantially all of the seagoing supervisors who were supervisors in 1984, or who were hired in, or promoted into, supervisory roles between 1984 and 1998 for that period of time. Beginning in 1999, the seagoing supervisors’ retirement benefits are provided through contributions to an industry-wide, multiemployer union sponsored pension plan. Upon retirement, those seagoing supervisors are entitled to retirement benefits from the Maritrans Plan for service periods between 1984 and 1998 and from the multiemployer union sponsored plan for other covered periods. Retirement benefits are based primarily on years of service and average compensation for the five consecutive plan years that produce the highest results. Multiemployer Pension and Postretirement Benefit Plans The Company’s subsidiaries are parties to collective-bargaining agreements that require them to make contributions to three jointly managed (Company and union) multiemployer pension plans covering seagoing personnel of U.S. Flag vessels. All three plans, the American Maritime Officers (“AMO”) Pension Plan, the Seafarers Pension Plan (“SIU”) and the Marine Engineers’ Beneficial Association (“MEBA”) Defined Benefit Pension Plan, are deemed individually significant by management. Plan level information is available in the public domain for each of the multiemployer pension plans the Company participates in. The table below provides additional information about the Company’s participation in the above multi-employer pension plans: SCHEDULE OF MULTIEMPLOYER PLANS Pension Protection Act Contributions made Pension Plan EIN / Pension 2020 2019 Rehabilitation 2020 2019 AMO Pension Plan 13-1936709 Green (1) Yellow (1) None $ 580 $ 650 MEBA Pension Plan 51-6029896 Green (1) Green (1) None 2,895 2,353 Seafarers Pension Plan 13-6100329 Green (1) Green (1) None 279 288 Total contributions $ 3,754 $ 3,291 (1) A “Yellow” Zone Status plan is a plan that has a funding ratio between 65 . A “Green” Zone Status plan is a plan that is 80 . The plan years for the three union plans end as follows: MEBA and SIU on December 31 and AMO on September 30. The Company has no future minimum contribution requirements under the three multiemployer pension plans shown above as of December 31, 2020 and any future contributions are subject to negotiations between the employers and the unions. ERISA requires employers who are contributors to U.S. multiemployer plans to continue funding their allocable share of each plan’s unfunded vested benefits in the event of withdrawal from or termination of such plans. Based on information received from the trustees of the SIU Pension Plan, the Company is not subject to withdrawal liabilities under that plan. Based on the actuarial report received from the trustees of the MEBA Pension Plan, as of December 31, 2020, the Company’s estimated withdrawal liability would have been approximately $ 34,679 had the Company elected to withdraw from the plan in 2020. Based on the actuarial report received from the trustees of the AMO Pension Plan, as of September 30, 2019, the Company’s estimated withdrawal liability would have been approximately $ 18,191 had the Company elected to withdraw from the plan in 2020. The Company has no intentions of terminating its participation in any of the three multiemployer pension plans and has no expectations that the plans will be terminated. Accordingly, no provisions have been made for the estimated withdrawal liability as of December 31, 2020. The SIU – Tug Agreement and AMO collective bargaining agreements for OSG expire in March 2021. The ATC MEBA collective bargaining agreement expires in May 2021 and the SIU – Tanker Agreement for OSG and MEBA for the Parent Company collective bargaining agreements expire in June 2022. Postretirement Benefit Plans The Company also provides certain postretirement health care and life insurance benefits to qualifying domestic retirees and their eligible dependents (“OSG Postretirement Plan”). The health care plan for shore-based employees and their dependents and seagoing licensed deck officers (“Deck Officers”) and their dependents is contributory at retirement, while the life insurance plan for all employees is noncontributory. In general, postretirement medical coverage is provided to shore-based employees hired prior to January 1, 2005 and all Deck Officers who retire and have met minimum age and service requirements under a formula related to total years of service. The Company no longer provides prescription drug coverage to its retirees or their beneficiaries once they reach age 65. The Company does not currently fund these benefit arrangements and has the right to amend or terminate the health care and life insurance benefits at any time. As part of the acquisition of ATC, the Company assumed liabilities of $ 9,898 related to a pension and postretirement plan (“ATC Plan”). The postretirement medical and life insurance plan provided benefits to shore-based employees and nonunion licensed deck officers at least 55 years of age with 10 years or more of service, as defined. The plan was frozen as of December 31, 2016 and closed to new entrants as of January 1, 2017. The acquisition of the ATC Plan resulted in an increase in benefit obligation of $ 9,124 on March 12, 2020. The OSG Postretirement Plan was amended effective December 31, 2020 to include participants of the ATC Plan. Due to changes in the plan provisions, certain participants from the ATC Plan elected not to continue coverage in the OSG Postretirement Plan and an actuarial gain of $ 1,485 in other comprehensive income was recognized. The plan provisions for the ATC participants that moved into the OSG Postretirement Plan were amended and a negative plan amendment of $ 6,219 was established. Information with respect to the domestic pension and postretirement benefit plans for which the Company uses a December 31 measurement date, follow: SCHEDULE OF BENEFIT OBLIGATIONS IN EXCESS OF FAIR VALUE OF PLAN ASSETS Pension Benefits Other Benefits At December 31, 2020 2019 2020 2019 Change in benefit obligation: Benefit obligation at beginning of year $ 46,936 $ 44,015 $ 3,572 $ 3,401 Cost of benefits earned (service cost) — — 307 105 Interest cost on benefit obligation 1,450 1,802 386 140 Actuarial losses/(gains) 3,452 3,805 (857 ) 84 Benefits paid (2,859 ) (2,686 ) (442 ) (158 ) Plan Amendments — — (6,219 ) — Acquisition — — 9,124 — Benefit obligation at year end 48,979 46,936 5,871 3,572 Change in plan assets: Fair value of plan assets at beginning of year 36,754 31,929 — — Actual return on plan assets 6,726 6,790 — — Employer contributions 1,595 721 442 158 Benefits paid (2,859 ) (2,686 ) (442 ) (158 ) Fair value of plan assets at year end 42,216 36,754 — — Unfunded status at December 31 $ (6,763 ) $ (10,182 ) $ (5,871 ) $ (3,572 ) Information for defined benefit pension plans with accumulated benefit obligations in excess of plan assets follows: SCHEDULE OF ACCUMULATED BENEFIT OBLIGATIONS IN EXCESS OF FAIR VALUE OF PLAN ASSETS At December 31, 2020 2019 Projected benefit obligation $ 48,979 $ 46,936 Accumulated benefit obligation 48,979 46,936 Fair value of plan assets 42,216 36,754 Information for defined benefit pension plans and other postretirement benefit plans net periodic cost/(benefit) follows: SCHEDULE OF NET BENEFIT COSTS Pension Benefits Other Benefits For the year ended December 31, 2020 2019 2020 2019 Components of expense: Cost of benefits earned $ — $ — $ 307 $ 105 Interest cost on benefit obligation 1,450 1,802 386 140 Expected return on plan assets (2,612 ) (2,246 ) — — Amortization of prior-service costs — — (229 ) (229 ) Recognized net actuarial loss 444 588 35 11 Net periodic benefit cost $ (718 ) $ 144 $ 499 $ 27 The weighted-average assumptions used to determine benefit obligations follow: SCHEDULE OF ASSUMPTIONS USED Pension Benefits Other Benefits At December 31, 2020 2019 2020 2019 Discount rate 2.35 % 3.20 % 2.90 % 3.55 % The selection of a single discount rate for the Maritrans Plan was derived from bond yield curves, which the Company believed as of such dates to be appropriate for ongoing plans with a long duration, such as the Maritrans Plan, and that generally mirror the type of high yield bond portfolio the Company could acquire to offset its obligations under the Maritrans Plan. The weighted-average assumptions used to determine net periodic benefit cost follow: SCHEDULE OF ASSUMPTIONS USED Pension Benefits Other Benefits For the year ended December 31, 2020 2019 2020 2019 Discount rate 3.20 % 4.25 % 3.55 %/ 3.50 4.40 % Expected (long-term) return on plan assets 7.25 % 7.25 % — — The assumed health care cost trend rate for measuring the benefit obligation included in Other Benefits above is an increase of 6.25% as of December 31, 2020, with the rate of increase declining to an ultimate trend rate of 4.75% per annum by 2027 Assumed health care cost trend rates have a significant effect on the amounts reported for the health care plans. Expected benefit payments for the following ten years are as follows: SCHEDULE OF EXPECTED BENEFIT PAYMENTS Pension Benefits Other Benefits 2021 $ 2,937 $ 257 2022 2,961 261 2023 3,005 262 2024 3,066 262 2025 3,115 260 2026-2030 14,890 1,296 Total $ 29,974 $ 2,598 The expected long-term rate of return on plan assets is based on the current and expected asset allocations. Additionally, the long-term rate of return is based on historical returns, investment strategy, inflation expectations and other economic factors. The expected long-term rate of return is then applied to the market value of plan assets. The fair values of the Company’s pension plan assets, which are valued based Level 1 inputs, at December 31, 2020 and 2019, by asset category are as follows: SCHEDULE OF CHANGES IN FAIR VALUE OF PLAN ASSETS Fair Value Level 1 At December 31, 2020 2019 Cash and cash equivalents $ 773 $ 595 Equity securities: Large cap exchange traded fund 15,998 13,994 Small company - mid value 3,050 2,222 Small company - mid growth 3,180 2,167 International value 3,162 2,634 International growth 3,326 2,656 Fixed income and preferred stock: Intermediate term bond fund 12,662 12,418 Small company - mid value - preferred stock 65 68 Total $ 42,216 $ 36,754 Plan fiduciaries of the Retirement Plan of Maritrans, Inc. set investment policies, strategies and oversee its investment allocation, which includes selecting investment managers and setting long term strategic targets. The primary strategic investment objective is to maximize total return while maintaining a broadly diversified portfolio for the primary purpose of satisfying obligations for future benefit payments. Equities are the primary holdings of the Retirement Plan of Maritrans, Inc. Other investments, including fixed income investments, provide diversification, and, in certain cases, lower the volatility of returns. In general, equity can range from 55 to 75 percent of total plan assets, fixed income securities can range from 25 to 45 percent of total plan assets and cash can be held in amounts up to 5 percent of plan assets. Actual asset allocation within the approved ranges varies from time to time based on economic conditions (both current and forecast) and the advice of professional advisors. The Company contributed $ 1,595 and $ 721 to the Maritrans Plan in 2020 and 2019, respectively. The Company expects to make contributions of approximately $ 792 to the Maritrans Plan in 2021. Defined Contribution Plans The Company also had defined contribution plans covering all eligible employees. Contributions are limited to amounts allowable for income tax purposes. Commencing in 2006, employer contributions include both employer contributions made regardless of employee contributions and matching contributions to the plans. All contributions to the plans are at the discretion of the Company. The Company’s contributions to the plan were $ 2,888 and $ 2,414 for the years ended December 31, 2020 and 2019, respectively. The Company also has an unfunded, nonqualified supplemental savings plan covering highly compensated U.S. shore-based employees of the Company, which was terminated in connection with the Company’s filing for bankruptcy in 2012. This plan provided for levels of hypothetical employer contributions that would otherwise have been made under the Company’s defined contribution plans in the absence of limitations imposed by income tax regulations. The Company’s unfunded obligations under this plan at December 31, 2020 and 2019 were not material. Benefit Liabilities As part of the acquisition of ATC, the Company assumed liabilities related to a deferred compensation plan. The deferred compensation plan is an unfunded, nonqualified plan that allows eligible employees to defer up to 100% of their performance bonuses, or defer up to 50% ( 5% minimum) of their salary, select investments for their deferral balances and determine when to be paid out. Eligible employees can elect to receive payment either on a specified date, or on a specified date after termination of employment, and either in a lump sum or annual installments, with a maximum deferral period of 20 years. Expected timing of payout is greater than one year and therefore classified as long-term. The balance of the deferred compensation plan at December 31, 2020 was $ 10,079 and included in other liabilities on the consolidated balance sheets .

OTHER INCOME, NET

OTHER INCOME, NET	12 Months Ended
	Dec. 31, 2020
Other Income and Expenses [Abstract]
OTHER INCOME, NET	NOTE 17 — OTHER INCOME, NET Other income, net consists of: SCHEDULE OF OTHER NONOPERATING INCOME 2020 2019 Years Ended December 31, 2020 2019 Investment income: Interest $ 102 $ 1,177 Change in investment value (248 ) — Investment income (146 ) 1,177 Loss on extinguishment and prepayments of debt, net (1) (793 ) (72 ) Pension and post retirement items (2) 2,071 (26 ) OSG LNG performance guarantee fees — 110 Miscellaneous-net 489 251 Other income/(expense), net $ 1,621 $ 1,440 (1) See Note 8, “Debt,” for disclosures relating to loss on mandatory prepayments of debt. (2) The Company includes the service cost component for net periodic benefit cost/(income) in vessel expenses and general and administrative expenses and other components in other income, net on the consolidated statements of operations.

CONTINGENCIES

CONTINGENCIES	12 Months Ended
	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
CONTINGENCIES	NOTE 18 — CONTINGENCIES The Company’s policy for recording legal costs related to contingencies is to expense such legal costs as incurred. The Company is a party, as plaintiff or defendant, to various suits in the ordinary course of business for monetary relief arising principally from personal injuries (including without limitation exposure to asbestos and other toxic materials), wrongful death, collision or other casualty and to claims arising under charter parties. A substantial majority of such personal injury, wrongful death, collision or other casualty claims against the Company are covered by insurance (subject to deductibles not material in amount). Each of the claims involves an amount which, in the opinion of management, are not expected to be material to the Company’s financial position, results of operations and cash flows.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2020
Accounting Policies [Abstract]
Cash and cash equivalents	1. Cash and cash equivalents - Interest-bearing deposits that are highly liquid investments and have a maturity of three months or less when purchased are included in cash and cash equivalents. Restricted cash as of December 31, 2020 and 2019 was related to the Company’s Unsecured Senior Notes as defined in Note 8, “Debt”.
Vessels, vessel lives, deferred drydocking expenditures and other property	2. Vessels, vessel lives, deferred drydocking expenditures and other property - Vessels are recorded at cost and are depreciated to their estimated salvage value on the straight-line basis over the estimated useful lives of the vessels, which are generally 25 years (except for new ATBs for which estimated useful lives of 30 years are used) . Other property, including leasehold improvements, are recorded at cost and amortized on a straight-line basis over the shorter of the terms of the leases or the estimated useful lives of the assets, which range from three years to 15 years. Interest costs are capitalized to vessels and other property during the period that vessels are under construction and projects are in progress. During the years ended December 31, 2020 and 2019, interest costs capitalized were $ 3,717 and $ 3,636 , respectively. Expenditures incurred during a drydocking are deferred and amortized on the straight-line basis over the shorter of the terms of the leases or the period until the next scheduled drydocking, generally two and a half to five years. The Company only includes in deferred drydocking costs those direct costs that are incurred as part of the drydocking to meet regulatory requirements, or are expenditures that add economic life to the vessel, increase the vessel’s earnings capacity or improve the vessel’s efficiency. Direct costs include shipyard costs as well as the costs of placing the vessel in the shipyard. Expenditures for normal maintenance and repairs, whether incurred as part of the drydocking or not, are expensed as incurred. The carrying value of each of the Company’s vessels represents its original cost at the time it was delivered or purchased less depreciation calculated using estimated useful lives from the date such vessel was originally delivered from the shipyard or from the date (as in the case of certain of the Company’s ATBs) a vessel was rebuilt. A vessel’s carrying value is reduced to its new cost basis (i.e., its current fair value) if a vessel impairment charge is recorded. If the estimated economic lives assigned to the Company’s vessels prove to be too long because of new regulations, a prolonged weak market environment, a broad imposition of age restrictions by the Company’s customers, or other future events, it could result in higher depreciation expense and impairment losses in future periods related to a reduction in the useful lives of any affected vessels.
Impairment of long-lived assets	3. Impairment of long-lived assets - The carrying amounts of long-lived assets held and used by the Company are reviewed for potential impairment whenever events or changes in circumstances indicate that the carrying amount of a particular asset may not be fully recoverable. In such instances, the requirement for impairment could be triggered if the estimate of the undiscounted future cash flows expected to result from the use of the asset and its eventual disposition is less than the asset’s carrying amount. This assessment is made at the individual vessel level since separately identifiable cash flow information for each vessel is available. The impairment charge, if any, would be measured as the amount by which the carrying amount of a vessel exceeded its fair value. A long-lived asset impairment charge results in a new cost basis being established for the relevant long-lived asset. See Note 9, “Fair Value Measurements and Fair Value Disclosures,” for further discussion on the impairment tests performed on our vessels during the two years ended December 31, 2020.
Intangible assets	4. Intangible assets - Intangible assets with estimable useful lives are amortized over their estimated useful lives and are reviewed for potential impairment whenever events or changes in circumstances indicate that the carrying amount of the intangible asset may be impaired. See Note 9, “Fair Value Measurements and Fair Value Disclosures,” for further discussion on the impairment test performed on the Company’s intangible assets at December 31, 2020.
Deferred finance charges	5. Deferred finance charges - Finance charges incurred in the arrangement and amendment of debt are deferred and amortized to interest expense on an effective interest method over the life of the related debt. Unamortized deferred financing charges of $ 6,998 8,005 2,286 1,965
Revenue and expense recognition	6. Revenue and expense recognition - Revenues from time charters are accounted for as operating leases and are thus recognized ratably over the rental periods of such charters, as service is performed. Revenues from voyage charter contracts are recognized ratably over the estimated length of each voyage, calculated on a load-to-discharge basis. The Company classifies time charter leasing arrangements less than 90 days within the voyage charter revenue financial statement line item because the Company believes the pricing negotiated within these short-term time charter contracts more closely aligns with the Company’s voyage charter spot market. Under voyage charters, expenses such as fuel, port charges, canal tolls, cargo handling operations and brokerage commissions are paid by the Company whereas, under time and bareboat charters, such voyage costs are generally paid by the Company’s customers. The Company receives a stipend pursuant to the Maritime Security Act of 1996 for the two U.S. Flag Product Carriers which participate in the U.S. MSP program. This stipend has been recorded as an offset to vessel expenses which amounted to $ 9,665 10,000
Voyage receivables	7. Voyage receivables - All customers are granted credit on a short-term basis and related credit risks are considered minimal. The Company routinely reviews its voyage receivables and makes provisions for probable doubtful accounts; however, those provisions are estimates and actual results could differ from those estimates and those differences may be material. Voyage receivables are deemed uncollectible and removed from accounts receivable and the allowance for doubtful accounts when collection efforts have been exhausted.
Concentration of credit risk	8. Concentration of credit risk - Financial instruments that potentially subject the Company to concentrations of credit risk are voyage receivables due from charterers. With respect to voyage receivables, the Company limits its credit risk by performing ongoing credit evaluations. Voyage receivables reflected on the consolidated balance sheets as of December 31, 2020 and 2019 are net of a reserve for doubtful accounts of $ 4,604 and $ 5,040 , respectively. In June 2019, one of the Company’s lightering customers, Philadelphia Energy Solutions LLC (“PES”), suffered an explosion and fire at their refinery in the Delaware Bay. In July 2019, PES filed a Chapter 11 bankruptcy petition. The reserve for doubtful accounts at December 31, 2020 and 2019 includes a provision of $ 4,300 on outstanding receivables of $ 4,300 from PES as the ultimate recovery of these receivables is currently unknown. During the years ended December 31, 2020 and 2019, the Company had three individual customers for both years who accounted for 10% or more of the Company’s revenues. The customers and their related percentages were Monroe Energy LLC ( 12.6% ), BP Exploration Alaska Inc. ( 11.4% ) and SeaRiver Maritime Inc. ( 10.1% ) for the year ended December 31, 2020 and Monroe Energy LLC ( 16% ), SeaRiver Maritime, Inc. ( 12% ) and Shell ( 10% ) for the year ended December 31, 2019. The Company’s cash and cash equivalents balances generally exceed Federal Deposit Insurance Corporation insurance limits. Cash and cash equivalents are placed in what the Company believes to be creditworthy financial institutions. In addition, certain of the Company’s money market accounts invest in U.S. Treasury securities or other obligations issued or guaranteed by the U.S. government or its agencies.
Income taxes	9. Income taxes - The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and liabilities are determined based on the differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date. Net deferred tax assets are recorded to the extent the Company believes these assets will more likely than not be realized. In making such a determination, all available positive and negative evidence is considered, including future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. In the event the Company were to determine that it would be able to realize its deferred income tax assets in the future in excess of their net recorded amount, an adjustment would be made to the deferred tax asset valuation allowance, which would reduce the provision for income taxes in the period such determination is made. Uncertain tax positions are recorded in accordance with ASC 740, Income Taxes greater than 50% likely to be realized upon ultimate settlement with the related tax authority.
Use of estimates	10. Use of estimates - The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts of assets, liabilities, equity, revenues and expenses reported in the financial statements and accompanying notes. The most significant estimates relate to the depreciation of vessels and other property, amortization of drydocking costs, estimates used in assessing the recoverability of vessels, intangible assets and other long-lived assets, liabilities incurred relating to pension benefits, and income taxes. Actual results could differ from those estimates.
Segment information	11. Segment information - Operating segments are defined as components of an enterprise that engage in business activities. The Company has determined that it operates its business as a single segment as its chief operating decision maker makes decisions about resource allocations and reviews and measures the Company’s results as one line of business with similar regulatory requirements, customers and commodities transported.
Inventories	12. Inventories - Inventories are included in the inventories and other current assets line item on the consolidated balance sheets. Inventories are accounted for on the first in first out basis and consist of fuel on the Company’s vessels.
Acquisition of Alaska Tanker Company, LLC and related transactions	13. Acquisition of Alaska Tanker Company, LLC and related transactions
Recently adopted accounting standards	14. Recently adopted accounting standards - In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement In August 2018, the FASB issued ASU 2018-15, Intangibles — Goodwill and Other — Internal-Use Software (Subtopic 350-40),Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, Internal-Use Software In August 2018, the FASB issued ASU 2018-14, Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20), Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans
Recently issued accounting standards	15. Recently issued accounting standards — In June 2016, the FASB issued ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Codification Improvements to Topic 326 In November 2019, the FASB issued ASU 2019-10, Financial Instruments – Credit Losses (Topic 326), Derivatives and Hedging (Topic 815) and Leases (Topic 842): Effective Dates, Bucket 1— All public business entities (“PBEs”) that are SEC filers (as defined in U.S. GAAP), excluding smaller reporting companies (“SRCs”) (as defined by the SEC). The credit losses standard became effective January 1, 2020. Bucket 2— All other entities, including SRCs, other PBEs that are not SEC filers, private companies, not-for-profit organizations, and employee benefit plans. The credit losses standard is to become effective January 1, 2023. At the annual evaluation date on June 30, 2019, the Company met the SEC definition of a smaller reporting company. Accordingly, the Company plans to adopt the credit losses standard on January 1, 2023. Management is currently reviewing the impact of the adoption of this accounting standard on the Company’s consolidated financial statements. In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes,

EARNINGS PER COMMON SHARE (Tabl

EARNINGS PER COMMON SHARE (Tables)	12 Months Ended
	Dec. 31, 2020
Per Share Amounts:
SCHEDULE OF EARNINGS PER SHARE	The components of the calculation of basic earnings per share and diluted earnings per share are as follows: SCHEDULE OF EARNINGS PER SHARE Years Ended December 31, 2020 2019 Net income $ 30,004 $ 8,675 Weighted average common shares outstanding: Class A common stock - basic 89,794,392 89,251,818 Class A common stock - diluted 90,838,262 89,658,938

REVENUE RECOGNITION (Tables)

REVENUE RECOGNITION (Tables)	12 Months Ended
	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
SCHEDULE OF DISAGGREGATION OF REVENUE	The following table shows the Company’s shipping revenues disaggregated by nature of the charter arrangement for the years ended December 31, 2020 and 2019: SCHEDULE OF DISAGGREGATION OF REVENUE Years Ended December 31, 2020 2019 Time and bareboat charter revenues $ 344,512 $ 263,683 Voyage charter revenues (1) 29,752 33,275 Contracts of affreightment revenues 44,428 58,589 Total shipping revenues $ 418,692 $ 355,547 (1) Voyage charter revenues include approximately $ 15,466 and $ 10,152 of revenue related to short-term time charter contracts for the years ended December 31, 2020 and 2019, respectively.

VESSELS, OTHER PROPERTY AND D_2

VESSELS, OTHER PROPERTY AND DEFERRED DRYDOCK (Tables)	12 Months Ended
	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
SCHEDULE OF VESSELS AND OTHER PROPERTY	Vessels and other property consist of the following: SCHEDULE OF VESSELS AND OTHER PROPERTY 2020 2019 Years Ended December 31, 2020 2019 Vessels, at cost $ 1,099,187 $ 919,212 Accumulated depreciation (308,449 ) (274,900 ) Vessels, net 790,738 644,312 Construction in progress 17,238 65,697 Finance lease right-of-use asset, at cost (Note 15) 26,940 28,993 Accumulated amortization (Note 15) (2,957 ) (2,053 ) Finance lease right-of use asset, net (Note 15) 23,983 26,940 Other property, at cost 5,552 5,552 Transfers from construction in progress 25 — Accumulated depreciation and amortization (5,362 ) (5,289 ) Other property, net 215 263 Total vessels and other property $ 832,174 $ 737,212
SUMMARY OF VESSEL ACTIVITY EXCLUDING CONSTRUCTION PROGRESS	Vessel activity, excluding construction in progress, for the two years ended December 31, 2020 is summarized as follows: SUMMARY OF VESSEL ACTIVITY EXCLUDING CONSTRUCTION PROGRESS Vessel Cost Accumulated Depreciation Net Book Value Balance at December 31, 2018 $ 845,868 $ (248,939 ) $ 596,929 Transfers from construction in progress 82,625 — Depreciation — (32,284 ) Disposals (9,281 ) 6,323 Balance at December 31, 2019 919,212 (274,900 ) 644,312 Transfers from construction in progress 111,685 — Additions 74,076 — Depreciation — (37,339 ) Disposals (5,786 ) 3,790 Balance at December 31, 2020 $ 1,099,187 $ (308,449 ) $ 790,738
SUMMARY OF DRYDOCKING ACTIVITY	Drydocking activity for the two years ended December 31, 2020 is summarized as follows: SUMMARY OF DRYDOCKING ACTIVITY 2020 2019 Balance at January 1 $ 23,734 $ 26,099 Additions 33,398 11,074 Drydock amortization (13,998 ) (13,439 ) Balance at December 31 $ 43,134 $ 23,734

INVESTMENT IN ALASKA TANKER C_2

INVESTMENT IN ALASKA TANKER COMPANY, LLC (Tables)	12 Months Ended
	Dec. 31, 2020
Investments, All Other Investments [Abstract]
SUMMARY OF ASSETS AND LIABILITIES OF EQUITY METHOD INVESTMENT	At December 31, 2019, a condensed summary of the assets and liabilities of ATC as an equity method investment was as follows: SUMMARY OF ASSETS AND LIABILITIES OF EQUITY METHOD INVESTMENT 2019 December 31, 2019 Current assets $ 38,531 Total assets $ 38,531 Current liabilities $ 20,667 Noncurrent liabilities 18,867 Deficiency (1,003 ) Total liabilities and equity $ 38,531
SUMMARY OF RESULTS OF OPERATIONS OF EQUITY METHOD INVESTMENTS	For the year ended December 31, 2019, a condensed summary of the results of operations of ATC as an equity method investment was as follows: SUMMARY OF RESULTS OF OPERATIONS OF EQUITY METHOD INVESTMENTS 2019 Year Ended December 31, 2019 Shipping revenues $ 109,006 Ship operating expenses (100,437 ) Income from vessel operations 8,569 Net income $ 9,342

INTANGIBLE ASSETS (Tables)

INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
SCHEDULE OF INTANGIBLE ASSETS	Intangible assets activity for the two years ended December 31, 2020 is summarized as follows: SCHEDULE OF INTANGIBLE ASSETS Total Balance at December 31, 2018 $ 36,417 Amortization (4,600) Balance at December 31, 2019 31,817 Amortization (4,600) Balance at December 31, 2020 $ 27,217

DEBT (Tables)

DEBT (Tables)	12 Months Ended
	Dec. 31, 2020
Debt Disclosure [Abstract]
SCHEDULE OF LONG-TERM DEBT INSTRUMENTS	Debt consists of the following: SCHEDULE OF LONG-TERM DEBT INSTRUMENTS December 31, 2020 2019 Term loan, due 2023 4,676 6,821 $ 252,057 $ 291,994 Term loans, due 2024 426 1,086 22,972 48,289 Alaska tankers term loan, due 2025 623 50,360 — OSG 204 LLC term loan, due 2025 636 31,283 — Term loan, due 2026 73 98 23,171 27,075 OSG 205 LLC and OSG Courageous II LLC term loan, due 2027 564 48,586 — Unsecured senior notes, net of unamortized discount and deferred costs 691 689 Total debt 429,120 368,047 Less current installments of long-term debt (38,922 ) (31,512 ) Total long-term debt $ 390,198 $ 336,535
SCHEDULE OF FACILITY OF TERM LOAN	The applicable margins and floor interest rates for the Company’s term loan, due 2023, and term loan, due 2026, are as follows: SCHEDULE OF FACILITY OF TERM LOAN Debt Facility Term loan, due 2023 Term loan, due 2026 Rate ABR LIBOR ABR LIBOR Floor None 0.00% None 0.00% Applicable Margin None 4.00% None 5.00%
SCHEDULE OF DEBT EXPENSES	The following table summarizes interest expense, including amortization of issuance and deferred financing costs, commitment, administrative and other fees, recognized during the two years ended December 31, 2020 with respect to the Company’s debt facilities: SCHEDULE OF DEBT EXPENSES Years Ended December 31, Debt Facility 2020 2019 Term loan, due 2023 $ 18,132 $ 24,667 Term loan, due 2024 2,383 785 Alaska tankers term loan, due 2025 2,014 — OSG 204 LLC term loan, due 2025 1,365 — Term loan, due 2026 1,209 1,772 OSG 205 LLC and OSG Courageous II LLC term loan, due 2027 374 — Unsecured senior notes 302 156 OBS Facilities — 428 Total interest expense on debt facilities $ 25,779 $ 27,808
SCHEDULE OF AGGREGATE ANNUAL PRINCIPAL PAYMENTS	As of December 31, 2020, the aggregate annual principal payments required to be made on the Company’s debt are as follows: SCHEDULE OF AGGREGATE ANNUAL PRINCIPAL PAYMENTS 2020 2021 $ 38,922 2022 39,120 2023 221,388 2024 33,054 2025 62,452 Thereafter 41,179 Total $ 436,115

FAIR VALUE MEASUREMENTS AND F_2

FAIR VALUE MEASUREMENTS AND FAIR VALUE DISCLOSURES (Tables)	12 Months Ended
	Dec. 31, 2020
Fair Value Disclosures [Abstract]
SCHEDULE OF HIERARCHY CATEGORIZED ON FAIR VALUE	The estimated fair values of the Company’s financial instruments that are not measured at fair value on a recurring basis, categorized based upon the fair value hierarchy, at December 31, 2020 and 2019, are as follows: SCHEDULE OF HIERARCHY CATEGORIZED ON FAIR VALUE Carrying Fair Value Value Level 1 Level 2 December 31, 2020: Assets Cash and cash equivalents (1) $ 69,819 $ 69,819 $ — Total $ 69,819 $ 69,819 $ — Liabilities Term loan, due 2023, net $ 252,057 $ — 257,228 Term loan, due 2024, net 22,972 — 23,535 Alaska tankers term loan, due 2025, net 50,360 — 49,357 OSG 204 LLC term loan, due 2025, net 31,283 — 31,562 Term loan, due 2026, net 23,171 — 21,921 OSG 205 LLC and OSG Courageous II LLC term loan, due 2027, net 48,586 — 52,199 Unsecured senior notes, net 691 — 715 Total $ 429,120 $ — $ 436,517 Carrying Fair Value Value Level 1 Level 2 December 31, 2019: Assets Cash (1) $ 41,677 $ 41,677 $ — Total $ 41,677 $ 41,677 $ — Liabilities Term loan, due 2023, net $ 291,994 $ — $ 299,974 Term loan, due 2024, net 48,289 — 49,015 Term loan, due 2026, net 27,075 — 27,359 Unsecured senior notes, net 689 — 722 Total $ 368,047 $ — $ 377,070 (1) Includes current and non-current restricted cash totaling $ 122 and $ 174 at December 31, 2020 and 2019, respectively. Restricted cash as of December 31, 2020 and 2019 was related to the Company’s Unsecured Senior Notes.

ACCOUNTS PAYABLE, ACCRUED EXP_2

ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2020
Payables and Accruals [Abstract]
SCHEDULE OF ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	SCHEDULE OF ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES 2020 2019 Years Ended December 31, 2020 2019 Accounts payable $ 8,717 $ 5,944 Payroll and benefits 14,184 8,660 Interest 1,752 1,828 Insurance 1,040 673 Accrued drydock and repair costs 2,371 115 Bunkers and lubricants 725 852 Charter revenues received in advance 8,677 11,580 Accrued vessel expenses 9,642 3,441 Accrued general and administrative, primarily professional fees 307 799 Other 674 1,984 Accounts Payable and Other Accrued Liabilities, Current $ 48,089 $ 35,876

TAXES (Tables)

TAXES (Tables)	12 Months Ended
	Dec. 31, 2020
Income Tax Disclosure [Abstract]
SCHEDULE OF INCOME TAX (EXPENSE)/BENEFIT	The expense for income taxes on income before income taxes consists of the following: SCHEDULE OF INCOME TAX (EXPENSE)/BENEFIT 2020 2019 Years Ended December 31, 2020 2019 Current - Federal $ 161 $ — Current - State (48 ) — Current — (1,527 ) Deferred – Federal (5,401 ) — Deferred - State (897 ) — Deferred — 991 Total $ (6,185 ) $ (536 )
SCHEDULE OF EFFECTIVE INCOME TAX RATE RECONCILIATION	The reconciliations between the U.S. federal statutory income tax rate and the effective tax rate follows: SCHEDULE OF EFFECTIVE INCOME TAX RATE RECONCILIATION Years Ended December 31, 2020 2019 U.S. federal statutory income tax rate 21.0 % 21.0 % Adjustments due to: State taxes, net of federal benefit 2.9 % (8.9 )% Change in valuation allowance 0.1 % 0.6 % Equity awards 0.1 % (1.8 )% Return to provision 0.5 % (4.5 )% Nondeductible expenses 0.1 % 0.4 % Uncertain tax positions and tax examination settlement (1.9 )% 6.8 % U.S. income subject to tonnage tax (3.8 )% (6.5 )% Other (1.9 )% (1.3 )% Effective tax rate 17.1 % 5.8 %
SCHEDULE OF DEFERRED TAX ASSETS AND LIABILITIES	The significant components of the Company’s deferred tax liabilities and assets follow: SCHEDULE OF DEFERRED TAX ASSETS AND LIABILITIES 2020 2019 December 31, 2020 2019 Deferred tax liabilities: Vessels and other property (1) $ 124,304 $ 128,026 Prepaid expenditures 9,130 5,621 Operating lease right-of-use assets 55,754 72,298 Other-net — 2 Total deferred tax liabilities 189,188 205,947 Deferred tax assets: Loss carryforwards 64,487 68,917 Operating lease liability 55,426 71,779 Finance lease liability 5,754 6,333 Employee compensation and benefit plans 2,456 3,869 Financing and professional fees 15 2,003 Accrued expenses and other 1,062 1,165 Total deferred tax assets 129,200 154,066 Valuation allowance (21,004 ) (20,952 ) Net deferred tax assets 108,196 133,114 Net deferred tax liabilities $ 80,992 $ 72,833 (1) Includes deferred tax liabilities related to finance lease right-of-use assets totaling $ 5,441 6,190
SCHEDULE OF UNRECOGNIZED TAX BENEFITS	The following is a tabular reconciliation of the total amounts of unrecognized tax benefits (excluding interest and penalties): SCHEDULE OF UNRECOGNIZED TAX BENEFITS Years Ended December 31, 2020 2019 Balance of unrecognized tax benefits as of January 1, $ 2,495 $ 1,226 (Decreases)/increases for positions taken in prior years (1,177 ) 1,353 Decreases due to settlements with taxing authorities (505 ) — Rate change — (84 ) Balance of unrecognized tax benefits as of December 31, $ 813 $ 2,495

CAPITAL STOCK AND STOCK COMPE_2

CAPITAL STOCK AND STOCK COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
SCHEDULE OF RESTRICTED STOCK UNITS UNDER INCENTIVE PLANS	Activity with respect to restricted stock units under the Incentive Plans during the two years ended December 31, 2020 is summarized as follows: SCHEDULE OF RESTRICTED STOCK UNITS UNDER INCENTIVE PLANS Activity for the two years ended December 31, 2020 Class A common Nonvested Shares Outstanding at December 31, 2018 912,315 Granted 1,591,839 Vested ($ 1.66 2.32 (780,542 ) Forfeited ($ 1.63 (4,747 ) Nonvested Shares Outstanding at December 31, 2019 1,718,865 Nonvested Shares Outstanding at January 01, 2020 1,718,865 Granted 1,667,633 Vested ($ 1.74 2.32 (755,898 ) Forfeited ($ 1.74 2.27 (25,337 ) Nonvested Shares Outstanding at December 31, 2020 2,605,263
SCHEDULE OF STOCK OPTIONS ACTIVITY UNDER INCENTIVE PLANS	Activity with respect to stock options under the Incentive Plans during the two years ended December 31, 2020 is summarized as follows: SCHEDULE OF STOCK OPTIONS ACTIVITY UNDER INCENTIVE PLANS Activity for the two years ended December 31, 2020 Class A common Options Outstanding at December 31, 2018 866,011 Granted 612,745 Options Outstanding at December 31, 2019 1,478,756 Options Outstanding at January 01, 2020 1,478,756 Granted 612,745 Options Outstanding at December 31, 2020 1,478,756 Options Exercisable at January 01, 2020 - Granted - Options Exercisable at December 31, 2020 1,478,756

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)	12 Months Ended
	Dec. 31, 2020
Equity [Abstract]
SCHEDULE OF COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE LOSS	SCHEDULE OF COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE LOSS Years Ended December 31, 2020 2019 Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement benefit plans) $ (282 ) $ (6,409 ) $ (282 ) $ (6,409 )
SCHEDULE OF CHANGES IN BALANCES OF COMPONENT OF ACCUMULATED OTHER COMPREHENSIVE LOSS	The following tables present the changes in the balances of each component of accumulated other comprehensive loss, net of related taxes, for the two years ended December 31, 2020. SCHEDULE OF CHANGES IN BALANCES OF COMPONENT OF ACCUMULATED OTHER COMPREHENSIVE LOSS Items not yet Balance as of December 31, 2019 $ (6,409 ) Current period change, excluding amounts reclassified from accumulated other comprehensive loss 5,935 Amounts reclassified from accumulated other comprehensive loss 192 Total change in accumulated other comprehensive loss 6,127 Balance as of December 31, 2020 $ (282 ) Balance as of December 31, 2018 $ (7,192 ) Current period change, excluding amounts reclassified from accumulated other comprehensive loss 501 Amounts reclassified from accumulated other comprehensive loss 282 Total change in accumulated other comprehensive loss 783 Balance as of December 31, 2019 $ (6,409 )
SCHEDULE OF AMOUNTS RECLASSIFIED OUT OF ACCUMULATED OTHER COMPREHENSIVE LOSS	The following table presents information with respect to amounts reclassified out of accumulated other comprehensive loss for the two years ended December 31, 2020. SCHEDULE OF AMOUNTS RECLASSIFIED OUT OF ACCUMULATED OTHER COMPREHENSIVE LOSS Years Ended December 31, Accumulated Other Comprehensive Loss Component 2020 2019 Statement of Operations Line Item Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement plans): Net periodic benefit costs associated with pension and postretirement benefit plans for shore-based employees $ 424 $ 570 Other income, net Net periodic benefit costs associated with pension and postretirement benefit plans for seagoing employees (174 ) (201 ) Other income, net 250 369 Total before tax (58 ) (87 ) Tax provision $ 192 $ 282 Total net of tax
SCHEDULE OF INCOME TAX (EXPENSE) BENEFIT ALLOCATED TO COMPONENT	The income tax (expense)/benefit allocated to each component of other comprehensive income follows: SCHEDULE OF INCOME TAX (EXPENSE) BENEFIT ALLOCATED TO COMPONENT Items not yet recognized For the year ended December 31, 2020: Current period change excluding amounts reclassified from accumulated other comprehensive loss $ (1,803 ) Amounts reclassified from accumulated other comprehensive loss (58 ) Total change in accumulated other comprehensive loss $ (1,861 ) For the year ended December 31, 2019: Current period change excluding amounts reclassified from accumulated other comprehensive loss $ (154 ) Amounts reclassified from accumulated other comprehensive loss (87 ) Total change in accumulated other comprehensive loss $ (241 )

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
SCHEDULE OF LEASE RIGHT-OF-USE ASSETS AND LEASE LIABILITIES	The Company’s lease right-of-use assets and lease liabilities at December 31, 2020 and 2019 were as follows: SCHEDULE OF LEASE RIGHT-OF-USE ASSETS AND LEASE LIABILITIES December 31, 2020 2019 Operating leases Vessels chartered-in noncurrent operating lease assets $ 213,414 $ 283,871 Office space noncurrent operating lease assets 2,403 2,598 Total noncurrent operating lease assets $ 215,817 $ 286,469 Vessels chartered-in operating lease liabilities Current portion of operating lease liabilities $ 89,889 $ 89,537 Noncurrent operating lease liabilities 145,302 217,511 235,191 307,048 Office space operating lease liabilities Current portion of operating lease liabilities 724 608 Noncurrent operating lease liabilities 1,852 1,990 2,576 2,598 Total operating lease liabilities $ 237,767 $ 309,646 Finance lease Vessels and other property $ 26,940 $ 28,993 Accumulated amortization (2,957 ) (2,053 ) Vessels and other property, less accumulated amortization $ 23,983 $ 26,940 Current portion of finance lease liabilities $ 4,000 $ 4,011 Noncurrent finance lease liabilities 21,360 23,548 Total finance lease liabilities $ 25,360 $ 27,559
SCHEDULE OF FUTURE MINIMUM LEASE COMMITMENTS UNDER MINIMUM LEASE PAYMENTS	The future minimum commitments under these leases are as follows: SCHEDULE OF FUTURE MINIMUM LEASE COMMITMENTS UNDER MINIMUM LEASE PAYMENTS At December 31, 2020 Operating Leases Finance Lease 2021 $ 91,849 $ 4,161 2022 108,338 4,161 2023 43,388 4,161 2024 9,168 4,172 2025 4,534 4,161 Thereafter — 13,019 Net minimum lease payments 257,277 33,835 Less present value discount (22,086 ) (8,475 ) Total lease liabilities $ 235,191 $ 25,360
SCHEDULE OF SUPPLEMENTAL BALANCE SHEET INFORMATION RELATED TO LEASES	Supplemental balance sheet information related to leases was as follows: SCHEDULE OF SUPPLEMENTAL BALANCE SHEET INFORMATION RELATED TO LEASES December 31, 2020 2019 Weighted average remaining lease term - operating leases 2.8 years 3.7 years Weighted average discount rate - operating leases 6.5 % 6.7 % Weighted average remaining lease term - finance lease 8.1 years 9.1 years Weighted average discount rate - finance lease 7.3 % 7.3 %
SCHEDULE OF FUTURE MINIMUM COMMITMENTS OPERATING LEASES	The future minimum revenues, including rent escalations, which is equal to lease payments expected to be received over the noncancelable time charters term are as follows: SCHEDULE OF FUTURE MINIMUM COMMITMENTS OPERATING LEASES 2020 At December 31, 2020 Amount 2021 $ 177,352 2022 139,994 2023 102,058 2024 97,736 2025 63,985 Thereafter 14,357 Net minimum lease receipts $ 595,482
Office Space [Member]
Lessee, Lease, Description [Line Items]
SCHEDULE OF FUTURE MINIMUM LEASE COMMITMENTS UNDER MINIMUM LEASE PAYMENTS	The future minimum commitments under lease obligations for office space, which are operating leases, as of December 31, 2020 are as follows: SCHEDULE OF FUTURE MINIMUM LEASE COMMITMENTS UNDER MINIMUM LEASE PAYMENTS At December 31, 2020 Amount 2021 $ 748 2022 780 2023 609 2024 168 2025 100 Thereafter 988 Net minimum lease payments 3,393 Less present value discount (817 ) Total lease liabilities $ 2,576

PENSION, OTHER POSTRETIREMENT_2

PENSION, OTHER POSTRETIREMENT BENEFIT PLANS AND BENEFIT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2020
Multiemployer Plan [Line Items]
SCHEDULE OF MULTIEMPLOYER PLANS	Plan level information is available in the public domain for each of the multiemployer pension plans the Company participates in. The table below provides additional information about the Company’s participation in the above multi-employer pension plans: SCHEDULE OF MULTIEMPLOYER PLANS Pension Protection Act Contributions made Pension Plan EIN / Pension 2020 2019 Rehabilitation 2020 2019 AMO Pension Plan 13-1936709 Green (1) Yellow (1) None $ 580 $ 650 MEBA Pension Plan 51-6029896 Green (1) Green (1) None 2,895 2,353 Seafarers Pension Plan 13-6100329 Green (1) Green (1) None 279 288 Total contributions $ 3,754 $ 3,291 (1) A “Yellow” Zone Status plan is a plan that has a funding ratio between 65 . A “Green” Zone Status plan is a plan that is 80 .
SCHEDULE OF BENEFIT OBLIGATIONS IN EXCESS OF FAIR VALUE OF PLAN ASSETS	Information with respect to the domestic pension and postretirement benefit plans for which the Company uses a December 31 measurement date, follow: SCHEDULE OF BENEFIT OBLIGATIONS IN EXCESS OF FAIR VALUE OF PLAN ASSETS Pension Benefits Other Benefits At December 31, 2020 2019 2020 2019 Change in benefit obligation: Benefit obligation at beginning of year $ 46,936 $ 44,015 $ 3,572 $ 3,401 Cost of benefits earned (service cost) — — 307 105 Interest cost on benefit obligation 1,450 1,802 386 140 Actuarial losses/(gains) 3,452 3,805 (857 ) 84 Benefits paid (2,859 ) (2,686 ) (442 ) (158 ) Plan Amendments — — (6,219 ) — Acquisition — — 9,124 — Benefit obligation at year end 48,979 46,936 5,871 3,572 Change in plan assets: Fair value of plan assets at beginning of year 36,754 31,929 — — Actual return on plan assets 6,726 6,790 — — Employer contributions 1,595 721 442 158 Benefits paid (2,859 ) (2,686 ) (442 ) (158 ) Fair value of plan assets at year end 42,216 36,754 — — Unfunded status at December 31 $ (6,763 ) $ (10,182 ) $ (5,871 ) $ (3,572 )
SCHEDULE OF ACCUMULATED BENEFIT OBLIGATIONS IN EXCESS OF FAIR VALUE OF PLAN ASSETS	Information for defined benefit pension plans with accumulated benefit obligations in excess of plan assets follows: SCHEDULE OF ACCUMULATED BENEFIT OBLIGATIONS IN EXCESS OF FAIR VALUE OF PLAN ASSETS At December 31, 2020 2019 Projected benefit obligation $ 48,979 $ 46,936 Accumulated benefit obligation 48,979 46,936 Fair value of plan assets 42,216 36,754
SCHEDULE OF NET BENEFIT COSTS	Information for defined benefit pension plans and other postretirement benefit plans net periodic cost/(benefit) follows: SCHEDULE OF NET BENEFIT COSTS Pension Benefits Other Benefits For the year ended December 31, 2020 2019 2020 2019 Components of expense: Cost of benefits earned $ — $ — $ 307 $ 105 Interest cost on benefit obligation 1,450 1,802 386 140 Expected return on plan assets (2,612 ) (2,246 ) — — Amortization of prior-service costs — — (229 ) (229 ) Recognized net actuarial loss 444 588 35 11 Net periodic benefit cost $ (718 ) $ 144 $ 499 $ 27
SCHEDULE OF EXPECTED BENEFIT PAYMENTS	Expected benefit payments for the following ten years are as follows: SCHEDULE OF EXPECTED BENEFIT PAYMENTS Pension Benefits Other Benefits 2021 $ 2,937 $ 257 2022 2,961 261 2023 3,005 262 2024 3,066 262 2025 3,115 260 2026-2030 14,890 1,296 Total $ 29,974 $ 2,598
SCHEDULE OF CHANGES IN FAIR VALUE OF PLAN ASSETS	The fair values of the Company’s pension plan assets, which are valued based Level 1 inputs, at December 31, 2020 and 2019, by asset category are as follows: SCHEDULE OF CHANGES IN FAIR VALUE OF PLAN ASSETS Fair Value Level 1 At December 31, 2020 2019 Cash and cash equivalents $ 773 $ 595 Equity securities: Large cap exchange traded fund 15,998 13,994 Small company - mid value 3,050 2,222 Small company - mid growth 3,180 2,167 International value 3,162 2,634 International growth 3,326 2,656 Fixed income and preferred stock: Intermediate term bond fund 12,662 12,418 Small company - mid value - preferred stock 65 68 Total $ 42,216 $ 36,754
Benefit Obligations [Member]
Multiemployer Plan [Line Items]
SCHEDULE OF ASSUMPTIONS USED	The weighted-average assumptions used to determine benefit obligations follow: SCHEDULE OF ASSUMPTIONS USED Pension Benefits Other Benefits At December 31, 2020 2019 2020 2019 Discount rate 2.35 % 3.20 % 2.90 % 3.55 %
Net Periodic Benefit Cost [Member]
Multiemployer Plan [Line Items]
SCHEDULE OF ASSUMPTIONS USED	The weighted-average assumptions used to determine net periodic benefit cost follow: SCHEDULE OF ASSUMPTIONS USED Pension Benefits Other Benefits For the year ended December 31, 2020 2019 2020 2019 Discount rate 3.20 % 4.25 % 3.55 %/ 3.50 4.40 % Expected (long-term) return on plan assets 7.25 % 7.25 % — —

OTHER INCOME, NET (Tables)

OTHER INCOME, NET (Tables)	12 Months Ended
	Dec. 31, 2020
Other Income and Expenses [Abstract]
SCHEDULE OF OTHER NONOPERATING INCOME	Other income, net consists of: SCHEDULE OF OTHER NONOPERATING INCOME 2020 2019 Years Ended December 31, 2020 2019 Investment income: Interest $ 102 $ 1,177 Change in investment value (248 ) — Investment income (146 ) 1,177 Loss on extinguishment and prepayments of debt, net (1) (793 ) (72 ) Pension and post retirement items (2) 2,071 (26 ) OSG LNG performance guarantee fees — 110 Miscellaneous-net 489 251 Other income/(expense), net $ 1,621 $ 1,440 (1) See Note 8, “Debt,” for disclosures relating to loss on mandatory prepayments of debt. (2) The Company includes the service cost component for net periodic benefit cost/(income) in vessel expenses and general and administrative expenses and other components in other income, net on the consolidated statements of operations.

BASIS OF PRESENTATION AND DES_2

BASIS OF PRESENTATION AND DESCRIPTION OF BUSINESS (Details Narrative)	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Equity method investment, ownership percentage	50.00%

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Estimated Useful Lives	Vessels are recorded at cost and are depreciated to their estimated salvage value on the straight-line basis over the estimated useful lives of the vessels, which are generally 25 years (except for new ATBs for which estimated useful lives of 30 years are used)
Interest Costs Capitalized	$ 3,717	$ 3,636
Amortization of Debt Issuance Costs and Discounts	2,286	1,965
Accounts Receivable, Allowance for Credit Loss	4,604	5,040
Accounts Receivable, Credit Loss Expense (Reversal)		4,300
Income Tax Examination, Likelihood of Unfavorable Settlement	greater than 50%
Philadelphia Energy Solutions L L C [Member]
Property, Plant and Equipment [Line Items]
Accounts Receivable, Credit Loss Expense (Reversal)		4,300
Accounts Receivable, after Allowance for Credit Loss		$ 4,300
Monroe Energy L L C [Member]
Property, Plant and Equipment [Line Items]
Concentration Risk, Percentage	12.60%	16.00%
B P Exploration Alaska Inc [Member]
Property, Plant and Equipment [Line Items]
Concentration Risk, Percentage	11.40%
Sea River Maritime Inc [Member]
Property, Plant and Equipment [Line Items]
Concentration Risk, Percentage	10.10%	12.00%
Shell [Member]
Property, Plant and Equipment [Line Items]
Concentration Risk, Percentage		10.00%
U S Maritime Security Program [Member]
Property, Plant and Equipment [Line Items]
Vessel expense	$ 9,665	$ 10,000
Term Loan Credit Agreement [Member]
Property, Plant and Equipment [Line Items]
Unamortized Debt Issuance Expense	$ 6,998	$ 8,005
Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	15 years

SCHEDULE OF EARNINGS PER SHARE

SCHEDULE OF EARNINGS PER SHARE (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Per Share Amounts:
Net income	$ 30,004	$ 8,675
Weighted average common shares outstanding: Class A common stock - basic	89,794,392	89,251,818
Weighted average common shares outstanding: Class A common stock - diluted	90,838,262	89,658,938

EARNINGS PER COMMON SHARE (Deta

EARNINGS PER COMMON SHARE (Details Narrative) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,043,870	407,120
Outstanding Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
[custom:NumberOfClassCommonStockIssuable-0]	2,605,263	1,718,865
Outstanding Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
[custom:NumberOfClassCommonStockIssuable-0]	1,478,756	1,478,756
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	371,893	920,845
Class A Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.01

SCHEDULE OF DISAGGREGATION OF R

SCHEDULE OF DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total shipping revenues		$ 418,692	$ 355,547
Time and Bareboat Charter Revenues [Member]
Disaggregation of Revenue [Line Items]
Total shipping revenues		344,512	263,683
Voyage Charter Revenues [Member]
Disaggregation of Revenue [Line Items]
Total shipping revenues	[1]	29,752	33,275
Contracts of Affreightment Revenues [Member]
Disaggregation of Revenue [Line Items]
Total shipping revenues		$ 44,428	$ 58,589
[1]	Voyage charter revenues include approximately $

SCHEDULE OF DISAGGREGATION OF_2

SCHEDULE OF DISAGGREGATION OF REVENUE (Details) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 74,180	$ 91,864
Short-term Time Charter Contracts [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 15,466	$ 10,152

REVENUE RECOGNITION (Details Na

REVENUE RECOGNITION (Details Narrative) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)Products	Dec. 31, 2019USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period for voyage completion	30 days
Number of products participating in U.S Maritime Security Program | Products	2
Contract with Customer, Asset, after Allowance for Credit Loss	$ 9,351	$ 5,831
2021 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 21,142

SCHEDULE OF VESSELS AND OTHER P

SCHEDULE OF VESSELS AND OTHER PROPERTY (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Vessels, at cost	$ 1,099,187	$ 919,212	$ 845,868
Accumulated depreciation	(308,449)	(274,900)	(248,939)
Vessels, net	790,738	644,312	$ 596,929
Construction in progress	17,238	65,697
Finance lease right-of-use asset, at cost (Note 15)	26,940	28,993
Accumulated amortization (Note 15)	(2,957)	(2,053)
Finance lease right-of use asset, net (Note 15)	23,983	26,940
Other property, at cost	5,552	5,552
Transfers from construction in progress	25
Accumulated depreciation and amortization	(5,362)	(5,289)
Other property, net	215	263
Total vessels and other property	$ 832,174	$ 737,212

SUMMARY OF VESSEL ACTIVITY EXCL

SUMMARY OF VESSEL ACTIVITY EXCLUDING CONSTRUCTION PROGRESS (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Vessel Cost	$ 1,099,187	$ 919,212	$ 845,868
Accumulated Depreciation	(308,449)	(274,900)	(248,939)
Net Book Value	790,738	644,312	596,929
Vessel Cost	(1,099,187)	(919,212)	(845,868)
Accumulated Depreciation	308,449	274,900	$ 248,939
Transfers From Constructionin Progress [Member]
Property, Plant and Equipment [Line Items]
Vessel Cost	111,685	82,625
Accumulated Depreciation
Vessel Cost	(111,685)	(82,625)
Accumulated Depreciation
Depreciation [Member]
Property, Plant and Equipment [Line Items]
Vessel Cost
Accumulated Depreciation	(37,339)	(32,284)
Vessel Cost
Accumulated Depreciation	37,339	32,284
Disposals [Member]
Property, Plant and Equipment [Line Items]
Vessel Cost	5,786	9,281
Accumulated Depreciation	(3,790)	(6,323)
Vessel Cost	(5,786)	(9,281)
Accumulated Depreciation	3,790	$ 6,323
Additions [Member]
Property, Plant and Equipment [Line Items]
Vessel Cost	74,076
Accumulated Depreciation
Vessel Cost	(74,076)
Accumulated Depreciation

SUMMARY OF DRYDOCKING ACTIVITY

SUMMARY OF DRYDOCKING ACTIVITY (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Beginning balance	$ 919,212	$ 845,868
Ending balance	1,099,187	919,212
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Beginning balance	23,734	26,099
Additions	33,398	11,074
Drydock amortization	(13,998)	(13,439)
Ending balance	$ 43,134	$ 23,734

VESSELS, OTHER PROPERTY AND D_3

VESSELS, OTHER PROPERTY AND DEFERRED DRYDOCK (Details Narrative) $ in Thousands	Mar. 12, 2020USD ($)	Dec. 31, 2020USD ($)bbl	Aug. 31, 2020USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	May 31, 2019USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Entity Listings [Line Items]
Volume of chemical tank barge (bbl) | bbl		204,000
Proceeds from Sale of Property, Plant, and Equipment			$ 1,407	$ 1,234	$ 1,069	$ 1,101	$ 1,407	$ 3,404
Weighted average years of vessel, description							At December 31, 2020, the Company’s owned vessel fleet with a weighted average age of
Weighted average years of vessel							12 years
Debt Instrument, Collateral Amount		$ 744,760					$ 744,760
Accrual of capital expenditures							$ 1,820
Alaska Tanker Company, LLC [Member]
Entity Listings [Line Items]
Business Combination, Consideration Transferred	$ 54,000							$ 19,172

SUMMARY OF ASSETS AND LIABILITI

SUMMARY OF ASSETS AND LIABILITIES OF EQUITY METHOD INVESTMENT (Details) $ in Thousands	Dec. 31, 2019USD ($)
Investments, All Other Investments [Abstract]
Current assets	$ 38,531
Total assets	38,531
Current liabilities	20,667
Noncurrent liabilities	18,867
Deficiency	(1,003)
Total liabilities and equity	$ 38,531

SUMMARY OF RESULTS OF OPERATION

SUMMARY OF RESULTS OF OPERATIONS OF EQUITY METHOD INVESTMENTS (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Investments, All Other Investments [Abstract]
Shipping revenues	$ 109,006
Ship operating expenses	(100,437)
Income from vessel operations	8,569
Net income	$ 9,342

INVESTMENT IN ALASKA TANKER C_3

INVESTMENT IN ALASKA TANKER COMPANY, LLC (Details Narrative) - USD ($) $ in Thousands	Mar. 12, 2020	Dec. 31, 2020	Dec. 31, 2019
Entity Listings [Line Items]
Investments in and advances to affiliated companies			$ 3,599
Deposit for vessel purchases			$ 10,800
Alaska Tanker Company, LLC [Member]
Entity Listings [Line Items]
Investment Interest Rate			37.50%
Contract term ending date, description			December 2023
Investments in and advances to affiliated companies			$ 3,599
Equity method investment, distributions			3,562
Payments to Acquire Property, Plant, and Equipment			54,000
Acquisition by borrowing			$ 54,000
Business acquisition period results included in combined entity description			five-year term loan
Purchase of vessels term description			In connection with the purchase of the vessels from BP, the Company agreed to time charter arrangements with BP for terms of 2.5 years to 6.4 years at a fixed daily rate with an annual escalation and five renewal options for one year each
Business Combination, Consideration Transferred	$ 54,000		$ 19,172
Pension and postretirement plan			9,898
Deferred compensation plan			$ 8,812

SCHEDULE OF INTANGIBLE ASSETS (

SCHEDULE OF INTANGIBLE ASSETS (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Gross		$ 36,417
Finite-Lived Intangible Assets, Accumulated Amortization	$ (4,600)	(4,600)
Finite-Lived Intangible Assets, Net	$ 27,217	$ 31,817

INTANGIBLE ASSETS (Details Narr

INTANGIBLE ASSETS (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Core Deposits, Gross		$ 92,000
Finite-Lived Intangible Asset, Useful Life	6 years
Finite-Lived Intangible Asset, Expected Amortization, Year Five	$ 4,600

SCHEDULE OF LONG-TERM DEBT INST

SCHEDULE OF LONG-TERM DEBT INSTRUMENTS (Details) (Parenthetical) - USD ($) $ in Thousands	Nov. 30, 2020	Aug. 31, 2020	May 31, 2020	Sep. 30, 2019	Aug. 31, 2019	Jun. 30, 2019	Dec. 31, 2020	Dec. 31, 2019
Short-term Debt [Line Items]
Debt Instrument, Maturity Date, Description	due 2023	due in 2023	due in 2023	due in 2023	5-year term	due in 2023
Term Loan One [Member]
Short-term Debt [Line Items]
Debt Instrument, Maturity Date, Description							due 2023
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net							$ 4,676	$ 6,821
Term Loan Two [Member]
Short-term Debt [Line Items]
Debt Instrument, Maturity Date, Description							due 2024
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net							$ 426	1,086
Alaska Tankers Term Loan [Member]
Short-term Debt [Line Items]
Debt Instrument, Maturity Date, Description							due 2025
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net							$ 623
OSG 204 LLC and OSG Courageous II LLC Term Loan [Member]
Short-term Debt [Line Items]
Debt Instrument, Maturity Date, Description							due 2025
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net							$ 636
Term Loan Three [Member]
Short-term Debt [Line Items]
Debt Instrument, Maturity Date, Description							due 2026
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net							$ 73	$ 98
OSG 205 LLC and OSG Courageous II LLC Term Loan [Member]
Short-term Debt [Line Items]
Debt Instrument, Maturity Date, Description							due 2027
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net							$ 564

SCHEDULE OF LONG-TERM DEBT IN_2

SCHEDULE OF LONG-TERM DEBT INSTRUMENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Short-term Debt [Line Items]
Total debt	$ 429,120	$ 368,047
Less current installments of long-term debt	(38,922)	(31,512)
Total long-term debt	390,198	336,535
Term Loan One [Member]
Short-term Debt [Line Items]
Total debt	252,057	291,994
Term Loan Two [Member]
Short-term Debt [Line Items]
Total debt	22,972	48,289
Alaska Tankers Term Loan [Member]
Short-term Debt [Line Items]
Total debt	50,360
OSG 204 LLC and OSG Courageous II LLC Term Loan [Member]
Short-term Debt [Line Items]
Total debt	31,283
Term Loan Three [Member]
Short-term Debt [Line Items]
Total debt	23,171	27,075
OSG 205 LLC and OSG Courageous II LLC Term Loan [Member]
Short-term Debt [Line Items]
Total debt	48,586
Unsecured Senior Notes [Member]
Short-term Debt [Line Items]
Total debt	$ 691	$ 689

SCHEDULE OF FACILITY OF TERM LO

SCHEDULE OF FACILITY OF TERM LOAN (Details)	12 Months Ended
	Dec. 31, 2020
Alternate Base Rate [Member] | Term Loan 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate During Period	0.00%
Applicable Margin	0.00%
Alternate Base Rate [Member] | Term Loan 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate During Period	0.00%
Applicable Margin	0.00%
London Interbank Offered Rate (LIBOR) [Member] | Term Loan 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate During Period	0.00%
Applicable Margin	4.00%
London Interbank Offered Rate (LIBOR) [Member] | Term Loan 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate During Period	0.00%
Applicable Margin	5.00%

SCHEDULE OF DEBT EXPENSES (Deta

SCHEDULE OF DEBT EXPENSES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Short-term Debt [Line Items]
Total expense on debt facilities	$ 25,779	$ 27,808
Term Loan One [Member]
Short-term Debt [Line Items]
Total expense on debt facilities	18,132	24,667
Term Loan Two [Member]
Short-term Debt [Line Items]
Total expense on debt facilities	2,383	785
Alaska Tankers Term Loan [Member]
Short-term Debt [Line Items]
Total expense on debt facilities	2,014
OSG 204 LLC and OSG Courageous II LLC Term Loan [Member]
Short-term Debt [Line Items]
Total expense on debt facilities	1,365
Term Loan Three [Member]
Short-term Debt [Line Items]
Total expense on debt facilities	1,209	1,772
OSG 205 LLC and OSG Courageous II LLC Term Loan [Member]
Short-term Debt [Line Items]
Total expense on debt facilities	374
Unsecured Senior Notes [Member]
Short-term Debt [Line Items]
Total expense on debt facilities	302	156
OBS Facilities [Member]
Short-term Debt [Line Items]
Total expense on debt facilities		$ 428

SCHEDULE OF AGGREGATE ANNUAL PR

SCHEDULE OF AGGREGATE ANNUAL PRINCIPAL PAYMENTS (Details) $ in Thousands	Dec. 31, 2020USD ($)
Debt Disclosure [Abstract]
2021	$ 38,922
2022	39,120
2023	221,388
2024	33,054
2025	62,452
Thereafter	41,179
Total	$ 436,115

DEBT (Details Narrative)

DEBT (Details Narrative) - USD ($) $ in Thousands

Nov. 30, 2020

Jul. 30, 2020

Mar. 12, 2020

Aug. 31, 2020

Jun. 30, 2020

May 31, 2020

Sep. 30, 2019

Aug. 31, 2019

Jun. 30, 2019

May 31, 2019

Dec. 31, 2018

Nov. 30, 2018

Dec. 31, 2020

Dec. 31, 2019

Short-term Debt [Line Items]

Debt, Weighted Average Interest Rate

5.21%

6.55%

Construction Loan

$ 49,150

Debt drawn down to to finance

46,711

Prepayment of term loan

$ 15,811

$ 1,307

$ 1,307

$ 1,132

$ 1,054

$ 1,086

Debt Instrument, Maturity Date, Description

due 2023

due in 2023

due in 2023

due in 2023

5-year term

due in 2023

Debt Instrument, Interest Rate, Stated Percentage

5.54%

Debt Instrument, Maturity Date

Dec. 1, 2027

Sep. 30, 2024

Loans Payable

$ 50,000

Final payment for the vessels

$ 45,157

Amortization period of vessels

17 years

Repayments of Debt

$ 24,000

Interest Expense, Debt

$ 23,134

$ 24,593

Unsecured Senior Notes [Member]

Short-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

7.50%

Debt Instrument, Maturity Date

Feb. 15, 2024

Debt instrument, face amount

$ 146,000

Unsecured Senior Notes [Member] | Equity Plan [Member]

Short-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

7.50%

Debt Instrument, Maturity Date

Feb. 15, 2021

Election 1 Notes [Member] | Equity Plan [Member]

Short-term Debt [Line Items]

Debt Instrument, Maturity Date, Description

Notes due 2024

Debt instrument, face amount

$ 6,508

Election 2 Notes [Member] | Equity Plan [Member]

Short-term Debt [Line Items]

Debt Instrument, Interest Rate, Stated Percentage

7.50%

Debt instrument, face amount

$ 138,708

Wintrust Commercial Finance And Other Syndicate Lenders [Member]

Short-term Debt [Line Items]

Debt Instrument, Maturity Date, Description

seven-year term

five-year term

Debt Instrument, Interest Rate, Stated Percentage

6.37%

5.00%

Debt Instrument, Maturity Date

Jun. 1, 2025

Loans Payable

$ 32,933

Banc of America Leasing and Capital LLC [Member]

Short-term Debt [Line Items]

Debt Instrument, Maturity Date, Description

five-year term

Debt Instrument, Interest Rate, Stated Percentage

4.43%

Debt Instrument, Maturity Date

Mar. 12, 2025

Loans Payable

$ 54,000

P G I M Inc [Member]

Short-term Debt [Line Items]

Debt Instrument, Maturity Date, Description

December 2023

Debt instrument, face amount

$ 325,000

Wintrust Commercial Finance [Member]

Short-term Debt [Line Items]

Debt Instrument, Maturity Date

Nov. 1, 2026

Debt instrument, face amount

$ 27,500

SCHEDULE OF HIERARCHY CATEGORIZ

SCHEDULE OF HIERARCHY CATEGORIZED ON FAIR VALUE (Details) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	$ 69,819	$ 41,677
Total		69,819	41,677
Term loan agreements, fair value		429,120	368,047
Term Loan Agreement, Due 2023 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		252,057	291,994
Term Loan Agreements, Due 2024 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		22,972	48,289
Alaska Tankers Term Loan Agreement, Due 2024 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		50,360
OSG 204 LLC Term Loan Agreement, Due 2025 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		31,283
Term Loan Agreement, Due 2026 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		23,171	27,075
OSG 205 LLC And OSG Courageous II LLC Term Loan Due 2027 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		48,586
Unsecured Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		691	689
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]	69,819	41,677
Total		69,819	41,677
Term loan agreements, fair value
Fair Value, Inputs, Level 1 [Member] | Term Loan Agreement, Due 2023 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value
Fair Value, Inputs, Level 1 [Member] | Term Loan Agreements, Due 2024 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value
Fair Value, Inputs, Level 1 [Member] | Alaska Tankers Term Loan Agreement, Due 2024 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value
Fair Value, Inputs, Level 1 [Member] | OSG 204 LLC Term Loan Agreement, Due 2025 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value
Fair Value, Inputs, Level 1 [Member] | Term Loan Agreement, Due 2026 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value
Fair Value, Inputs, Level 1 [Member] | OSG 205 LLC And OSG Courageous II LLC Term Loan Due 2027 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value
Fair Value, Inputs, Level 1 [Member] | Unsecured Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	[1]
Total
Term loan agreements, fair value		436,517	377,070
Fair Value, Inputs, Level 2 [Member] | Term Loan Agreement, Due 2023 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		257,228	299,974
Fair Value, Inputs, Level 2 [Member] | Term Loan Agreements, Due 2024 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		23,535	49,015
Fair Value, Inputs, Level 2 [Member] | Alaska Tankers Term Loan Agreement, Due 2024 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		49,357
Fair Value, Inputs, Level 2 [Member] | OSG 204 LLC Term Loan Agreement, Due 2025 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		31,562
Fair Value, Inputs, Level 2 [Member] | Term Loan Agreement, Due 2026 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		21,921	27,359
Fair Value, Inputs, Level 2 [Member] | OSG 205 LLC And OSG Courageous II LLC Term Loan Due 2027 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		52,199
Fair Value, Inputs, Level 2 [Member] | Unsecured Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term loan agreements, fair value		$ 715	$ 722
[1]	Includes current and non-current restricted cash totaling $

SCHEDULE OF HIERARCHY CATEGOR_2

SCHEDULE OF HIERARCHY CATEGORIZED ON FAIR VALUE (Details) (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Unsecured Senior Notes [Member]
Schedule of Capitalization, Long-term Debt [Line Items]
[custom:RestrictedCashFairValueDisclosure-0]	$ 122	$ 174

SCHEDULE OF ACCOUNTS PAYABLE, A

SCHEDULE OF ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Payables and Accruals [Abstract]
Accounts payable	$ 8,717	$ 5,944
Payroll and benefits	14,184	8,660
Interest	1,752	1,828
Insurance	1,040	673
Accrued drydock and repair costs	2,371	115
Bunkers and lubricants	725	852
Charter revenues received in advance	8,677	11,580
Accrued vessel expenses	9,642	3,441
Accrued general and administrative, primarily professional fees	307	799
Other	674	1,984
Accounts Payable and Other Accrued Liabilities, Current	$ 48,089	$ 35,876

SCHEDULE OF INCOME TAX (EXPENSE

SCHEDULE OF INCOME TAX (EXPENSE)/BENEFIT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Current - Federal	$ 161
Current - State	(48)
Current		(1,527)
Deferred – Federal	(5,401)
Deferred - State	(897)
Deferred		991
Total	$ (6,185)	$ (536)

SCHEDULE OF EFFECTIVE INCOME TA

SCHEDULE OF EFFECTIVE INCOME TAX RATE RECONCILIATION (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S. federal statutory income tax rate	21.00%	21.00%
State taxes, net of federal benefit	2.90%	(8.90%)
Change in valuation allowance	0.10%	0.60%
Equity awards	0.10%	(1.80%)
Return to provision	0.50%	(4.50%)
Nondeductible expenses	0.10%	0.40%
Uncertain tax positions and tax examination settlement	(1.90%)	6.80%
U.S. income subject to tonnage tax	(3.80%)	(6.50%)
Other	(1.90%)	(1.30%)
Effective tax rate	17.10%	5.80%

SCHEDULE OF DEFERRED TAX ASSETS

SCHEDULE OF DEFERRED TAX ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Vessels and other property	[1]	$ 124,304	$ 128,026
Prepaid expenditures		9,130	5,621
Operating lease right-of-use assets		55,754	72,298
Other-net			2
Total deferred tax liabilities		189,188	205,947
Loss carryforwards		64,487	68,917
Operating lease liability		55,426	71,779
Finance lease liability		5,754	6,333
Employee compensation and benefit plans		2,456	3,869
Financing and professional fees		15	2,003
Accrued expenses and other		1,062	1,165
Total deferred tax assets		129,200	154,066
Valuation allowance		(21,004)	(20,952)
Net deferred tax assets		108,196	133,114
Net deferred tax liabilities		80,992	72,833
Deferred tax liabilities for finance lease right-of-use assets		$ 5,441	$ 6,190
[1]	A “Yellow” Zone Status plan is a plan that has a funding ratio

SCHEDULE OF DEFERRED TAX ASSE_2

SCHEDULE OF DEFERRED TAX ASSETS AND LIABILITIES (Details) (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Deferred tax liabilities for finance lease right-of-use assets	$ 5,441	$ 6,190

SCHEDULE OF UNRECOGNIZED TAX BE

SCHEDULE OF UNRECOGNIZED TAX BENEFITS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Balance of unrecognized tax benefits as of January 1,	$ 2,495,000	$ 1,226,000
Increases for positions taken in prior years	(1,177,000)	(1,353,000)
Increases for positions taken in prior years	1,177,000	1,353,000
Amount of decreases related to settlements	(505,000)
Rate change		(84,000)
Balance of unrecognized tax benefits as of December 31,	$ 813,000	$ 2,495,000

TAXES (Details Narrative)

TAXES (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Entity Listings [Line Items]
Income Tax Expense (Benefit)	$ 6,185	$ 536
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent		(3.80%)
Operating Loss Carryforwards	$ 193,300
Operating loss carryforwards, expiration period	2034
[custom:OperatingLossCarryforwardsState-0]	$ 435,013
Income Tax Examination, Description	These U.S. state net operating loss carryforwards expire in various years from December 31, 2021 through December 31, 2035
Deferred Tax Assets, Valuation Allowance	$ 21,004	$ 20,952
Income taxes paid, net	5,695	1,293
Unrecognized tax benefits	813	2,495	$ 1,226
Liability for Uncertainty in Income Taxes, Noncurrent	189	$ 864
Overseas Mykonos and Overseas Santorini [Member]
Entity Listings [Line Items]
Income Tax Expense (Benefit)	$ 6,500

CAPITAL STOCK AND STOCK COMPE_3

CAPITAL STOCK AND STOCK COMPENSATION (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	Jun. 06, 2017	Dec. 31, 2020	Dec. 31, 2019
Schedule of Capitalization, Equity [Line Items]
Equity Method Investment, Ownership Percentage			50.00%
Share-based Payment Arrangement, Noncash Expense		$ 2,333	$ 1,662
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate			250.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate			0.00%
Share based payment expected price volatility			$ 0.55
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term			6 years
Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Remaining Contractual Term		7 years 2 months 4 days
Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price			$ 2.67
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 3,048
Expected to be Recognized [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Remaining Contractual Term		1 year 8 months 19 days
Restricted Stock Units (RSUs) [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 2.03	$ 2.02
Share-based Payment Arrangement, Noncash Expense		$ 2,321	$ 1,615
Roic Target Restricted Stock Units Awards [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		873,340
T S R Target Restricted Stock Units Awards [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		528,387
Maximum [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 5.57
Maximum [Member] | Restricted Stock Units (RSUs) [Member] | Subject to Increase RSU Award [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		291,112
Minimum [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 1.70
Minimum [Member] | Restricted Stock Units (RSUs) [Member] | Subject to Increase RSU Award [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		176,129
Incentive Plans [Member] | Maximum [Member]
Schedule of Capitalization, Equity [Line Items]
Number of shares increased for issuance	1,500,000
Class A Warrants [Member]
Schedule of Capitalization, Equity [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 0.01
Class of Warrant or Right, Outstanding		19,235,764
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		2,498	1,365,392
Common Class A [Member]
Schedule of Capitalization, Equity [Line Items]
Stock Repurchased During Period, Shares		104,552	159,685
[custom:StockRepurchasedDuringPeriodPerShareAmount]		$ 1.90	$ 1.84
Stock Issued During Period, Shares, Conversion of Convertible Securities		3,654,795
Stock Issued During Period, Shares, New Issues		473	257,963
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			612,745
Common Class A [Member] | Restricted Stock Units (RSUs) [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		1,667,633	1,591,839
Board of Directors [Member]
Schedule of Capitalization, Equity [Line Items]
Equity Method Investment, Ownership Percentage		77.00%
Non-employee Directors [Member] | Restricted Stock Units (RSUs) [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		321,000	357,866
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 2.25	$ 1.78
Employees, Including Senior Officers [Member] | Restricted Stock Units (RSUs) [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		764,406	552,598
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 2.03	$ 2.02
Certain Senior Officers [Member] | Restricted Stock Units (RSUs) [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			329,121
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			$ 1.82
Senior Officers [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			612,745
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price			$ 1.89
Stock call option value, per option			$ 1.02
Senior Officers [Member] | Restricted Stock Units (RSUs) [Member]
Schedule of Capitalization, Equity [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		582,224	352,258

SCHEDULE OF RESTRICTED STOCK UN

SCHEDULE OF RESTRICTED STOCK UNITS UNDER INCENTIVE PLANS (Details) - Restricted Stock Units (RSUs) [Member] - Common Class A [Member] - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Nonvested Shares Outstanding	1,718,865	912,315
Granted	1,667,633	1,591,839
Vested	(755,898)	(780,542)
Forfeited	(25,337)	(4,747)
Nonvested Shares Outstanding	2,605,263	1,718,865

SCHEDULE OF RESTRICTED STOCK _2

SCHEDULE OF RESTRICTED STOCK UNITS UNDER THE INCENTIVE PLANS (Details) (Parenthetical) - Restricted Stock Units (RSUs) [Member] - Common Class A [Member] - $ / shares	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Share based award, restricted stock units, forfeited price per share	$ 1.63
Maximum [Member]
Class of Stock [Line Items]
Share based compensation, restricted stock vested, exercise price per share	1.66	$ 1.74
Share based award, restricted stock units, forfeited price per share		1.74
Minimum [Member]
Class of Stock [Line Items]
Share based compensation, restricted stock vested, exercise price per share	$ 2.32	2.32
Share based award, restricted stock units, forfeited price per share		$ 2.27

SCHEDULE OF STOCK OPTIONS ACTIV

SCHEDULE OF STOCK OPTIONS ACTIVITY UNDER INCENTIVE PLANS (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Granted
Common Class A [Member]
Class of Stock [Line Items]
Options Exercisable, Beginning Balance	1,478,756	866,011
Granted		612,745
Options Outstanding, Ending Balance	1,478,756	1,478,756
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number
Options Exercisable, Ending Balance	1,478,756

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE LOSS (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Loss
Effective Income Tax Rate Reconciliation, Percent	17.10%	5.80%
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	$ 7,606
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax	6,575
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	7,869
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax	$ 6,857

SCHEDULE OF COMPONENTS OF ACCUM

SCHEDULE OF COMPONENTS OF ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Loss
Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement benefit plans)	$ (282)	$ (6,409)
Accumulated other comprehensive loss	$ (282)	$ (6,409)

SCHEDULE OF CHANGES IN BALANCES

SCHEDULE OF CHANGES IN BALANCES OF COMPONENT OF ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Amounts reclassified from accumulated other comprehensive income	$ 192	$ 282
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balance	(6,409)	(7,192)
Current period change, excluding amounts reclassified from accumulated other comprehensive income	5,935	501
Amounts reclassified from accumulated other comprehensive income	192	282
Total change in accumulated other comprehensive loss	6,127	783
Ending balance	$ (282)	$ (6,409)

SCHEDULE OF AMOUNTS RECLASSIFIE

SCHEDULE OF AMOUNTS RECLASSIFIED OUT OF ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total before tax	$ 250	$ 369
Tax provision	(58)	(87)
Total net of tax	192	282
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total net of tax	192	282
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Other Income/(Expense), Net [Member] | Net Periodic Benefit Costs, Shore-based Employees [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic benefit costs associated with pension and postretirement benefit plans	424	570
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Other Income/(Expense), Net [Member] | Net Periodic Benefit Costs, Seagoing Employees [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net periodic benefit costs associated with pension and postretirement benefit plans	$ (174)	$ (201)

SCHEDULE OF INCOME TAX (EXPEN_2

SCHEDULE OF INCOME TAX (EXPENSE) BENEFIT ALLOCATED TO COMPONENT (Details) - Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Current period change excluding amounts reclassified from accumulated other comprehensive loss	$ (1,803)	$ (154)
Amounts reclassified from accumulated other comprehensive loss	(58)	(87)
Total change in accumulated other comprehensive loss	$ (1,861)	$ (241)

SCHEDULE OF LEASE RIGHT-OF-USE

SCHEDULE OF LEASE RIGHT-OF-USE ASSETS AND LEASE LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Lessor, Lease, Description [Line Items]
Total noncurrent operating lease assets	$ 215,817	$ 286,469
Current portion of operating lease liabilities	90,613	90,145
Noncurrent operating lease liabilities	147,154	219,501
Total operating lease liabilities	237,767	309,646
Finance lease, liability, current	4,000	4,011
Finance lease, liability, noncurrent	21,360	23,548
Total lease liabilities	25,360	27,559
Vessels Chartered-In [Member]
Lessor, Lease, Description [Line Items]
Total noncurrent operating lease assets	213,414	283,871
Current portion of operating lease liabilities	89,889	89,537
Noncurrent operating lease liabilities	145,302	217,511
Total operating lease liabilities	235,191	307,048
Finance lease, right-of-use asset	26,940	28,993
Finance lease, right-of-use asset, amortization	(2,957)	(2,053)
Finance lease, right-of-use asset less accumulated amortization	23,983	26,940
Total lease liabilities	25,360
Office Space [Member]
Lessor, Lease, Description [Line Items]
Total noncurrent operating lease assets	2,403	2,598
Current portion of operating lease liabilities	724	608
Noncurrent operating lease liabilities	1,852	1,990
Total operating lease liabilities	$ 2,576	$ 2,598

SCHEDULE OF FUTURE MINIMUM LEAS

SCHEDULE OF FUTURE MINIMUM LEASE COMMITMENTS UNDER MINIMUM LEASE PAYMENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Lessor, Lease, Description [Line Items]
Total lease liabilities, operating lease	$ 237,767	$ 309,646
Total lease liabilities, finance Lease	25,360	27,559
Vessels Chartered-In [Member]
Lessor, Lease, Description [Line Items]
2021	91,849
2021	4,161
2022	108,338
2022	4,161
2023	43,388
2023	4,161
2024	9,168
2024	4,172
2025	4,534
2025	4,161
Thereafter
Thereafter	13,019
Net minimum lease payments, operating lease	257,277
Net minimum lease payments, finance Lease	33,835
Less: present value discount, operating lease	(22,086)
Less: present value discount, finance Lease	(8,475)
Total lease liabilities, operating lease	235,191	307,048
Total lease liabilities, finance Lease	25,360
Office Space [Member]
Lessor, Lease, Description [Line Items]
2021	748
2022	780
2023	609
2024	168
2025	100
Thereafter	988
Net minimum lease payments, operating lease	3,393
Less: present value discount, operating lease	(817)
Total lease liabilities, operating lease	$ 2,576	$ 2,598

SCHEDULE OF SUPPLEMENTAL BALANC

SCHEDULE OF SUPPLEMENTAL BALANCE SHEET INFORMATION RELATED TO LEASES (Details)	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	2 years 9 months 18 days	3 years 8 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	6.50%	6.70%
Finance Lease, Weighted Average Remaining Lease Term	8 years 1 month 6 days	9 years 1 month 6 days
Finance Lease, Weighted Average Discount Rate, Percent	7.30%	7.30%

SCHEDULE OF FUTURE MINIMUM COMM

SCHEDULE OF FUTURE MINIMUM COMMITMENTS OPERATING LEASES (Details) $ in Thousands	Dec. 31, 2020USD ($)
Leases [Abstract]
2021	$ 177,352
2022	139,994
2023	102,058
2024	97,736
2025	63,985
Thereafter	14,357
Net minimum lease receipts	$ 595,482

LEASES (Details Narrative)

LEASES (Details Narrative) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)Vessels	Dec. 31, 2019USD ($)	Mar. 12, 2020
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Lessee, Operating Lease, Term of Contract			3 years
Commitments to charter in vessels | Vessels	12
Lessee, Operating Lease, Description	The Company holds options for 11 of the vessels chartered-in. For one vessel, the option can be exercised for 3-years and is available indefinitely. For the remaining 10 vessels, the options can be exercised for one, three or five years with the one-year option only usable once, while the three- and five-year options are available indefinitely. The lease payments for the charters-in are fixed throughout the option periods and the options are on a vessel-by-vessel basis that can be exercised individually. The Company exercised its option on one of its vessels to extend the term until June 2025. On December 10, 2018, the Company exercised its options to extend the terms of nine vessels. Terms for five of the vessels were extended for an additional three years, with terms ending in December 2022, and terms for four of the vessels were extended for an additional year, with terms ending December 2020. On December 11, 2019, the terms for the four vessels ending December 2020 were extended for an additional three years, with terms ending in December 2023.
Operating Lease, Expense	$ 90,608	$ 90,359
Sublease Income	197,546	188,163
Non-cash operating activities for obtaining operating right-of-use assets and liabilities	1,533	93,407
Finance Lease, Right-of-Use Asset, Amortization	2,957	2,052
Finance Lease, Interest Expense	1,973	1,462
Non-cash financing activities for obtaining finance right-of-use assets		28,993
Time Charter Revenue [Member]
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Operating Lease, Lease Income	343,290	263,416
Straight Line Rent Adjustments	1,222	267
Operating Lease, Residual Value of Leased Asset	284,259
Office Space Rental [Member]
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Operating Lease, Payments	739	604
Office Space Rental [Member] | General and Administrative Expense [Member]
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Operating Leases, Rent Expense	$ 851	$ 648
Minimum [Member]
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Lessee, Operating Lease, Term of Contract	1 year
Maximum [Member]
SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Line Items]
Lessee, Operating Lease, Term of Contract	15 years

SCHEDULE OF MULTIEMPLOYER PLANS

SCHEDULE OF MULTIEMPLOYER PLANS (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Contributions made by the Company		$ 3,754	$ 3,291
AMO Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	[1]	Green	Yellow
Rehabilitation Plan Status		No
Contributions made by the Company		$ 580	$ 650
MEBA Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	[1]	Green	Green
Rehabilitation Plan Status		No
Contributions made by the Company		$ 2,895	$ 2,353
Seafarers Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Multiemployer Plan, Pension, Significant, Certified Zone Status [Fixed List]	[1]	Green	Green
Rehabilitation Plan Status		No
Contributions made by the Company		$ 279	$ 288
Yellow Zone Status Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan funding ratio		65.00%
Green Zone Status Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plan funding ratio		80.00%
[1]	A “Yellow” Zone Status plan is a plan that has a funding ratio

SCHEDULE OF BENEFIT OBLIGATIONS

SCHEDULE OF BENEFIT OBLIGATIONS IN EXCESS OF FAIR VALUE OF PLAN ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets at beginning of year	$ 36,754
Fair value of plan assets at beginning of year	36,754	$ 36,754
Fair value of plan assets at year end	42,216	36,754
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	46,936	44,015
Cost of benefits earned (service cost)
Interest cost on benefit obligation	1,450	1,802
Actuarial losses/(gains)	3,452	3,805
Benefits paid	(2,859)	(2,686)
Amendments
Acquisition
Benefit obligation at year end	48,979	46,936
Fair value of plan assets at beginning of year	36,754	31,929
Fair value of plan assets at beginning of year	42,216	31,929
Actual return on plan assets	6,726	6,790
Employer contributions	1,595	721
Benefits paid	(2,859)	(2,686)
Fair value of plan assets at year end	42,216	36,754
Unfunded status at December 31	(6,763)	(10,182)
Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	3,572	3,401
Cost of benefits earned (service cost)	307	105
Interest cost on benefit obligation	386	140
Actuarial losses/(gains)	(857)	84
Benefits paid	(442)	(158)
Amendments	(6,219)
Acquisition	9,124
Benefit obligation at year end	5,871	3,572
Fair value of plan assets at beginning of year
Fair value of plan assets at beginning of year
Actual return on plan assets
Employer contributions	442	158
Benefits paid	(442)	(158)
Fair value of plan assets at year end
Unfunded status at December 31	$ (5,871)	$ (3,572)

SCHEDULE OF ACCUMULATED BENEFIT

SCHEDULE OF ACCUMULATED BENEFIT OBLIGATIONS IN EXCESS OF FAIR VALUE OF PLAN ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Projected benefit obligation	$ 48,979	$ 46,936
Accumulated benefit obligation	48,979	46,936
Fair value of plan assets	$ 42,216	$ 36,754

SCHEDULE OF NET BENEFIT COSTS (

SCHEDULE OF NET BENEFIT COSTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Cost of benefits earned
Interest cost on benefit obligation	1,450	1,802
Expected return on plan assets	(2,612)	(2,246)
Amortization of prior-service costs
Recognized net actuarial loss	444	588
Net periodic benefit cost	(718)	144
Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Cost of benefits earned	307	105
Interest cost on benefit obligation	386	140
Expected return on plan assets
Amortization of prior-service costs	(229)	(229)
Recognized net actuarial loss	35	11
Net periodic benefit cost	$ 499	$ 27

SCHEDULE OF ASSUMPTIONS USED (D

SCHEDULE OF ASSUMPTIONS USED (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Pension Plan [Member] | Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	2.35%	3.20%
Pension Plan [Member] | Net Periodic Benefit Cost [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	3.20%	4.25%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	7.25%	7.25%
Other Pension Plan [Member] | Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	2.90%	3.55%
Other Pension Plan [Member] | Net Periodic Benefit Cost [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate		4.40%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets
Other Pension Plan [Member] | Net Periodic Benefit Cost [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	3.55%
Other Pension Plan [Member] | Net Periodic Benefit Cost [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	3.50%

SCHEDULE OF EXPECTED BENEFIT PA

SCHEDULE OF EXPECTED BENEFIT PAYMENTS (Details) $ in Thousands	Dec. 31, 2020USD ($)
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
2021	$ 2,937
2022	2,961
2023	3,005
2024	3,066
2025	3,115
2026-2030	14,890
Total	29,974
Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
2021	257
2022	261
2023	262
2024	262
2025	260
2026-2030	1,296
Total	$ 2,598

SCHEDULE OF CHANGES IN FAIR VAL

SCHEDULE OF CHANGES IN FAIR VALUE OF PLAN ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 42,216	$ 36,754
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	773	595
Defined Benefit Plan, Equity Securities, US, Large Cap [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	15,998	13,994
Small Company - Mid Value [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	3,050	2,222
Small Company - Mid Growth [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	3,180	2,167
International Value [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	3,162	2,634
International Growth [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	3,326	2,656
Intermediate Term Bond Fund [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	12,662	12,418
Small Company Mid Value Prefeered Stock [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 65	$ 68

PENSION, OTHER POSTRETIREMENT_3

PENSION, OTHER POSTRETIREMENT BENEFIT PLANS AND BENEFIT LIABILITIES (Details Narrative) - USD ($) $ in Thousands	Jan. 01, 2021	Mar. 12, 2020	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate			6.25%
Increase declining to an ultimate trend rate			4.75%
Defined Contribution Plan, Employer Discretionary Contribution Amount			$ 2,888	$ 2,414
Deferred Compensation Liability, Current and Noncurrent			$ 10,079
Minimum [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage			55.00%
Minimum [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage			25.00%
Maximum [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage			75.00%
Maximum [Member] | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage			45.00%
Alaska Tanker Company, LLC [Member]
Defined Benefit Plan Disclosure [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			$ 9,898
Retirement Benefits, Description			The postretirement medical and life insurance plan provided benefits to shore-based employees and nonunion licensed deck officers at least 55 years of age with 10 years or more of service, as defined.
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent			100.00%
[custom:DefinedContributionPlanMaximumDeferralPeriod]			20 years
Alaska Tanker Company, LLC [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent			5.00%
Alaska Tanker Company, LLC [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent			50.00%
Alaska Tanker Company, LLC [Member] | Osg Postretirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Increase (Decrease), Cost		$ 9,124
[custom:GainOnPostretirementPlan]			$ 1,485
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment			6,219
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Retirement and Postemployment Benefits			34,679
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment
Defined Benefit Plan, Plan Assets, Contributions by Employer			$ 1,595	$ 721
AMO Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Retirement and Postemployment Benefits					$ 18,191
AMO and MEBA Pension Plan [Member] | SIU-Tanker Agreement and SIU-Tug Agreement [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Description			The SIU – Tug Agreement and AMO collective bargaining agreements for OSG expire in March 2021. The ATC MEBA collective bargaining agreement expires in May 2021 and the SIU – Tanker Agreement for OSG and MEBA for the Parent Company collective bargaining agreements expire in June 2022.
Maritrans Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Employer			$ 1,595
Maritrans Plan [Member] | Subsequent Event [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost	$ 792

SCHEDULE OF OTHER NONOPERATING

SCHEDULE OF OTHER NONOPERATING INCOME (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Other Income and Expenses [Abstract]
Interest		$ 102	$ 1,177
Change in investment value		(248)
Investment income		(146)	1,177
Loss on extinguishment and prepayments of debt, net	[1]	(793)	(72)
Pension and post retirement items	[2]	2,071	(26)
OSG LNG performance guarantee fees			110
Miscellaneous-net		489	251
Other income/(expense), net		$ 1,621	$ 1,440
[1]	See Note 8, “Debt,” for disclosures relating to loss on mandatory prepayments of debt.
[2]	The Company includes the service cost component for net periodic benefit cost/(income) in vessel expenses and general and administrative expenses and other components in other income, net on the consolidated statements of operations.