Overseas Shipholding Group, Inc. - Ordinary Shares (OSG) 10-K 16 Mar 15 2014 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2014	Jun. 30, 2014	Mar. 02, 2015
Document Information [Line Items]
Entity Registrant Name	OVERSEAS SHIPHOLDING GROUP INC
Entity Central Index Key	75208
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Trading Symbol	OSGIQ
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2014
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float		$178,125,000
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding			310,752,322
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding			5,673,120

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Current Assets:
Cash and cash equivalents	$389,226		$601,927
Restricted cash	123,178		0
Voyage receivables, including unbilled of $85,094 and $113,336	101,513		147,964
Income tax recoverable	55,856		3,952
Other receivables	8,293		16,838
Inventories	7,987		16,884
Prepaid expenses and other current assets	16,303		24,284
Deferred income taxes	5,312		5,464
Total Current Assets	707,668		817,313
Vessels and other property, less accumulated depreciation	2,213,217		2,359,352
Deferred drydock expenditures, net	62,413		57,248
Total Vessels, Deferred Drydock and Other Property	2,275,630		2,416,600
Investments in and advances to affiliated companies	334,863		323,327
Intangible assets, less accumulated amortization	54,817		60,167
Other assets	63,513		27,087
Total Assets	3,436,491		3,644,494
Current Liabilities:
Accounts payable, accrued expenses and other current liabilities	96,066		121,582
Income taxes payable, including reserve for uncertain tax positions of $234,623 (2013)	906		256,258
Current installments of long-term debt	12,314	[1]	0	[2]
Total Current Liabilities	109,286		377,840
Reserve for uncertain tax positions	34,520		26,585
Long-term debt	1,656,353	[1]	0	[2]
Deferred income taxes	283,277		369,954
Other liabilities	66,968		42,189
Liabilities subject to compromise	0		2,888,173
Total Liabilities	2,150,404		3,704,741
Commitments and contingencies
Equity/(Deficit):
Common stock value	0		44,291
Paid-in additional capital	1,507,334		413,753
(Accumulated deficit)/Retained earnings	-141,025		386,250
Stockholders' Equity before Treasury Stock	1,369,467		844,294
Cost of treasury stock (13,743,949 shares cancelled August 5, 2014, and 13,575,339 shares (2013))	0		-835,197
Stockholders Equity Subtotal	1,369,467		9,097
Accumulated other comprehensive loss	-83,380		-69,344
Total Equity/(Deficit)	1,286,087		-60,247
Total Liabilities and Equity/(Deficit)	3,436,491		3,644,494
Common Class A [Member]
Equity/(Deficit):
Common stock value	3,108		0
Common Class B [Member]
Equity/(Deficit):
Common stock value	$50		$0
[1]	The weighted average effective interest rate for debt outstanding as of December 31, 2014 was 6.21%.
[2]	Classified as liabilities subject to compromise as of December 31, 2013.

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2014	Aug. 05, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Unbilled Contracts Receivable (in dollars)	$85,094		$113,336
Income taxes payable ,reserve for uncertain tax positions (in dollars)			$234,623
Common Stock, par value (in dollars per share)	$1		$1
Common Stock, Shares Authorized	120,000,000		120,000,000
Common Stock, Shares, Issued			44,290,759
Common Stock Shares Cancelled		44,290,759
Treasury Stock, Shares		13,743,949	13,575,339
Common Class A [Member]
Common Stock, par value (in dollars per share)	$0.01
Common Stock, Shares Authorized	1,000,000,000
Common Stock, Shares, Issued	310,744,763
Common Stock, Shares, Outstanding	310,744,763
Common Class B [Member]
Common Stock, par value (in dollars per share)	$0.01
Common Stock, Shares Authorized	7,926,805
Common Stock, Shares, Issued	5,017,330
Common Stock, Shares, Outstanding	5,017,330

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012
Shipping Revenues:
Pool revenues, including $85,967 in 2014, $90,668 in 2013 and $78,523 in 2012 received from companies accounted for by the equity method	$180,813		$177,068	$241,314
Time and bareboat charter revenues	392,669		370,689	299,267
Voyage charter revenues	383,952		468,239	583,253
Sunoco termination fee	0		0	13,300
Shipping revenues	957,434		1,015,996	1,137,134
Operating Expenses:
Voyage expenses	196,075		252,668	296,288
Vessel expenses	268,852		265,146	285,023
Charter hire expenses	152,016		206,873	370,405
Depreciation and amortization	151,758		176,276	201,284
General and administrative	83,716		97,663	88,845
Technical management transition costs	3,427		0	0
Severance and relocation costs	17,020		3,097	3,163
Goodwill and other intangibles impairment charge	0		16,214	0
(Gain)/loss on disposal of vessels, including impairments	-10,532		365,257	271,359
Total Operating Expenses	862,332		1,383,194	1,516,367
Income/(Loss) from Vessel Operations	95,102		-367,198	-379,233
Equity in Income of Affiliated Companies	41,355		40,894	33,486
Operating Income/(Loss)	136,457		-326,304	-345,747
Other Income/(Expense)	426		849	-1,314
Income/(Loss) before Interest Expense, Reorganization Items and Taxes	136,883		-325,455	-347,061
Interest Expense	-232,491		-350	-93,421
Loss before Reorganization Items and Income Taxes	-95,608		-325,805	-440,482
Reorganization Items, net	-171,473		-327,170	-41,113
Loss before Income Taxes	-267,081		-652,975	-481,595
Income Tax Benefit	114,808		14,745	1,481
Net Loss	($152,273)		($638,230)	($480,114)
Weighted Average Number of Common Shares Outstanding:
Basic and Diluted (in shares)			30,482,818	30,339,258
Common Class A [Member]
Weighted Average Number of Common Shares Outstanding:
Basic and Diluted (in shares)	212,507,963	[1]	0	0
Common Class B [Member]
Weighted Average Number of Common Shares Outstanding:
Basic and Diluted (in shares)	21,372,197	[2]
Common Stock [Member]
Weighted Average Number of Common Shares Outstanding:
Basic and Diluted (in shares)			30,482,818	30,339,258
Per Share Amounts:
Basic and Diluted net loss (in dollars per share)	$0		($20.94)	($15.82)
Common Class A And Class B [Member]
Per Share Amounts:
Basic and Diluted net loss (in dollars per share)	($0.65)		$0	$0
[1]	The weighted average common shares outstanding for Class A Common Stock basic and diluted was calculated using no Class A Common Stock and no Class A Warrants outstanding for the period January 1, 2014 through August 4, 2014. 310,419,766 Class A Common Stock and 210,153,431 Class A Warrants were used in calculating the weighted average common shares outstanding for the period August 5, 2014 through December 31, 2014.
[2]	The weighted average common shares outstanding for Class B Common Stock basic and diluted was calculated using the common shares outstanding for each of the years in the two year period ended December 31, 2013 and for the period January 1, 2014 through August 4, 2014 and Class B Common Stock outstanding and Class B Warrants outstanding for the period August 5, 2014 through December 31, 2014. As of December 31, 2014 there are 2,908,149 Class B Warrants outstanding.

CONSOLIDATED_STATEMENTS_OF_OPE1

CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pool revenues, received from companies accounted for by the equity method	$85,967	$90,668	$78,523

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net Loss	($152,273)	($638,230)	($480,114)
Other Comprehensive (Loss)/Income, net of tax:
Net change in unrealized holding losses on available-for-sale securities	0	-49	15
Net change in unrealized losses on cash flow hedges	-2,284	39,674	5,617
Defined benefit pension and other postretirement benefit plans:
Net change in unrecognized transition obligation	4	5	6
Net change in unrecognized prior service costs	-77	-237	1,731
Net change in unrecognized actuarial losses	-11,679	5,044	-1,843
Other Comprehensive Income/(Loss)	-14,036	44,437	5,526
Comprehensive Loss	($166,309)	($593,793)	($474,588)

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash Flows from Operating Activities:
Net Loss	($152,273)	($638,230)	($480,114)
Items included in net loss not affecting cash flows:
Depreciation and amortization	151,758	176,276	201,284
Loss on write-down of vessels and other fixed assets	0	366,439	279,382
Goodwill and other intangibles write-down	0	16,214	0
Amortization of deferred gain on sale and leasebacks	0	42	-5,905
Amortization of debt discount and other deferred financing costs	3,973	0	3,198
Deferred financing costs write-off	0	0	12,540
Compensation relating to restricted stock/stock unit and stock option grants	1,009	-131	7,910
Dedesignation of interest rate swap agreements	0	0	1,866
Deferred income tax benefit	-82,432	-7,398	-29,751
Unrealized gains on forward freight agreements and bunker swaps	0	0	-156
Undistributed earnings of affiliated companies	-32,534	-35,826	-22,771
Deferred payment obligations on charters-in	3,232	5,446	5,600
Reorganization items, non-cash	23,715	261,221	34,676
(Gain)/loss on sublease contracts	0	-896	895
Other - net	2,139	2,243	7,133
Items included in net loss related to investing and financing activities:
Loss on sale or write-down of securities and investments - net	0	198	3,166
Gain on disposal of vessels, net	-10,532	-1,182	-8,023
Payments for drydocking	-37,817	-22,024	-45,990
Bankruptcy and IRS claim payments	-584,369	0	0
Changes in operating assets and liabilities:
Decrease/(increase) in receivables	46,451	33,453	-30,324
Security deposits with vendors and lenders	10,369	0	-10,344
Decrease in deferred revenue (Sunoco deferred revenue - 2012)	-2,989	0	-27,104
Net change in prepaid items and accounts payable, accrued expenses and other current and long-term liabilities	-66,849	-13,949	69,933
Net cash (used in)/provided by operating activities	-727,149	141,896	-32,899
Cash Flows from Investing Activities:
Increase in restricted cash	-123,178	0	0
Proceeds from sale of marketable securities and investments	0	459	13,000
Expenditures for vessels	-32,412	-36,377	-52,604
Proceeds from disposal of vessels	78,426	485	12,886
Expenditures for other property	-489	-2,181	-2,862
Distributions from affiliated companies, net	29,722	2,097	6,608
Other - net	593	979	563
Net cash used in investing activities	-47,338	-34,538	-22,409
Cash Flows from Financing Activities:
Issuance of common stock, net of issuance costs	1,510,000	0	0
Purchases of treasury stock	-162	-42	-307
Issuance of debt, net of issuance and deferred financing costs	1,176,664	0	572,000
Payments on debt, including adequate protection payments	-2,124,716	-12,731	-63,990
Issuance of common stock upon exercise of stock options	0	0	70
Net cash provided by/(used in) financing activities	561,786	-12,773	507,773
Net (decrease)/increase in cash and cash equivalents	-212,701	94,585	452,465
Cash and cash equivalents at beginning of year	601,927	507,342	54,877
Cash and cash equivalents at end of year	$389,226	$601,927	$507,342

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY/(DEFICIT) (USD $)	Total	Class A [Member]	Common Stock [Member]	Paid-in Additional Capital [Member]	Paid-in Additional Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]
In Thousands, except Share data					Class A [Member]
Balance at Dec. 31, 2011	$1,002,292		$44,291	$413,016		$1,504,594	($840,302)	($119,307)
Balance (in shares) at Dec. 31, 2011							13,826,882
Net loss	-480,114					-480,114
Other Comprehensive Income, net of taxes	5,526							5,526
Issuance of Restricted Stock Awards	232			-5,084			5,316
Issuance of Restricted Stock Awards (in shares)							-458,029
Compensation Related to Options Granted, net of true-up for actual forfeitures	1,795			1,795
Amortization of Restricted Stock Awards, net of true-up for actual forfeitures	6,115			6,115
Options Exercised and Employee Stock Purchase Plan	70			-68			138
Options Exercised and Employee Stock Purchase Plan (in shares)							-11,041
Tax Impact of Vesting of Stock Awards	-1,363			-1,363
Purchases of Treasury Stock	-307						-307
Purchases of Treasury Stock (in shares)							38,508
Balance at Dec. 31, 2012	534,246		44,291	414,411		1,024,480	-835,155	-113,781
Balance (in shares) at Dec. 31, 2012							13,396,320
Net loss	-638,230					-638,230
Other Comprehensive Income, net of taxes	44,437							44,437
Forfeitures of Restricted Stock Awards	0
Forfeitures of Restricted Stock Awards (in shares)							138,649
Compensation Related to Options Granted, net of true-up for actual forfeitures	-192			-192
Amortization of Restricted Stock Awards, net of true-up for actual forfeitures	61			61
Tax Impact of Vesting of Stock Awards	-527			-527
Purchases of Treasury Stock	-42						-42
Purchases of Treasury Stock (in shares)							40,370
Balance at Dec. 31, 2013	-60,247		44,291	413,753		386,250	-835,197	-69,344
Balance (in shares) at Dec. 31, 2013	13,575,339						13,575,339
Net loss	-152,273					-152,273
Other Comprehensive Income, net of taxes	-14,036							-14,036
Forfeitures of Restricted Stock Awards	0			3,110		0	-3,110
Forfeitures of Restricted Stock Awards (in shares)							138,330
Cancellation of Common Stock	0		-44,291	-419,176		-375,002	838,469
Cancellation of Common Stock (in Shares)							-13,743,949
Issuance of Common Stock	1,510,000		3,148	1,506,852
Class B warrants converted to Class B Common Stock			7	-7
Issuance of Restricted Stock Awards	0		3	-3
Compensation Related to Options Granted, net of true-up for actual forfeitures	278	60		278	60
Amortization of Restricted Stock Awards, net of true-up for actual forfeitures	2,035	432		2,035	432
Purchases of Treasury Stock	-162						-162
Purchases of Treasury Stock (in shares)							30,280
Balance at Dec. 31, 2014	$1,286,087		$3,158	$1,507,334		($141,025)	$0	($83,380)
Balance (in shares) at Dec. 31, 2014							0

BASIS_OF_PRESENTATION_AND_DESC

BASIS OF PRESENTATION AND DESCRIPTION OF BUSINESS	12 Months Ended
	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	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”). All significant intercompany balances and transactions have been eliminated in consolidation. Investments in 50% or less owned affiliated companies, in which the Company exercises significant influence, are accounted for by the equity method. Dollar amounts, except per share amounts, are in thousands.
	The Company owns and operates a fleet of oceangoing vessels engaged in the transportation of liquid cargoes in the international market and the U.S. Flag trades through its wholly owned subsidiaries OSG International, Inc. (“OIN”), a Marshall Islands corporation, and OSG Bulk Ships, Inc. (“OBS”), a New York Corporation, respectively.

CHAPTER_11_FILING_AND_EMERGENC

CHAPTER 11 FILING AND EMERGENCE FROM BANKRUPTCY	12 Months Ended
	Dec. 31, 2014
Bankruptcy Filing And Going Concern [Abstract]
Bankruptcy Filing And Going Concern [Text Block]	NOTE 2 — CHAPTER 11 FILING AND EMERGENCE FROM BANKRUPTCY
	On November 14, 2012 (the “Petition Date”), the Company and 180 of its subsidiaries (together with OSG, the “Debtors”) filed voluntary petitions for reorganization under Chapter 11 of Title II of the U.S. Code (the “Bankruptcy Code”) in the U.S. Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”). On March 7, 2014, the Debtors filed a plan of reorganization supported by certain of the lenders under OSG’s $1,500,000 credit agreement, dated as of February 9, 2006 (the “Lender Plan”). On April 18, 2014, the Debtors received a proposal for an alternative plan of reorganization from certain holders of existing equity interests of OSG, which the Debtors determined to be more favorable to the Debtors’ creditors and equity interest holders than the Lender Plan (the “Equity Proposal”). Accordingly, the Debtors filed with the Bankruptcy Court a plan of reorganization that effectuates the terms of the Equity Proposal (as subsequently amended, the “Equity Plan”). The Bankruptcy Court confirmed the Equity Plan by order entered on July 18, 2014 (the “Confirmation Order”). On August 5, 2014 (the “Effective Date”), the Equity Plan became effective and OSG emerged from bankruptcy.
	Summary of Emergence from Bankruptcy
	The Equity Plan deleveraged the Company’s balance sheet by reducing debt and increasing stockholders’ equity. The financial restructuring was accomplished through exit financing and by using the proceeds from a shareholder rights offering (including Backstop Securities) and supplemental equity offering (Holdback Securities), as further discussed below, and cash on hand to reduce outstanding indebtedness. Below is a summary of the significant events affecting the Company’s capital structure as a result of the Equity Plan becoming effective.
	Amended and Restated Certificate of Incorporation
	On the Effective Date, the Company amended and restated its certificate of incorporation (the “Amended and Restated Certificate of Incorporation”) to among other things, authorize the Company to issue 1,067,926,805 shares of stock consisting of the following classes: (a) 1,000,000,000 shares of Class A Common Stock, par value $0.01 per share, (b) 7,926,805 shares of Class B Common Stock, par value $0.01 per share and (c) 60,000,000 shares of preferred stock, par value $0.01 per share, which may be issued in one or more series as the Board of Directors may determine from time to time.
	Equity Commitment Agreement
	On May 2, 2014, the Debtors entered into an equity commitment agreement (as subsequently amended, and including the exhibits thereto, the “Equity Commitment Agreement”) with potential investors (each, an “Initial Commitment Party”) and upon amendment of the Equity Commitment Agreement to, among other things, join certain additional parties to the Equity Commitment Agreement (each such additional party and each Initial Commitment Party, a “Commitment Party”). The Equity Commitment Agreement, along with the associated rights offering procedures, set forth the terms of an equity rights offering (the “Rights Offering”) and separate sale of Holdback Securities (as defined below) for an aggregate offering amount of $1,510,000. The Equity Plan and Equity Commitment Agreement further provided for the Company’s issuance of two separate classes of common stock (the “Class A Common Stock” and the “Class B Common Stock”, and collectively the “New Shares”) and penny warrants to purchase Class A Common Stock and Class B Common Stock (respectively “Class A Warrants” and “Class B Warrants”, and, together with the New Shares, the “Rights Offering Securities”).
	Rights Offering and Issuance of Shares and Warrants
	In accordance with the Equity Commitment Agreement and the Equity Plan, on or about June 10, 2014, subscription rights to purchase Rights Offering Securities (each such right, a “Subscription Right”) were distributed in respect of each then outstanding share of common stock of Pre-Reorganized OSG (each such share, an “Existing Share”) to the holder of record of such Existing Share as of June 6, 2014 (the “Record Date”). Each Subscription Right entitled a holder thereof that satisfied certain specified conditions (each, an “Eligible Holder”) to purchase 12 shares of Class A Common Stock or Class A Warrants, as applicable, as described in the Equity Plan, for $3.00 per Rights Offering Security. Each Eligible Holder that timely elected to participate in the Rights Offering (each, a “Participating Eligible Holder”) was able to exercise some, all or none of the Subscription Rights it received, but each Subscription Right could only be exercised in whole, and not in part. All holders of Existing Shares of Pre-Reorganized OSG as of the Record Date that were not Participating Eligible Holders received, as described in the Equity Plan, one new share of Class B Common Stock or Class B Warrants in respect of each Existing Share held by such holder on the Record Date.
	Each Commitment Party agreed in the Equity Commitment Agreement to exercise its Subscription Rights in full (to the extent such Commitment Party received Subscription Rights), to purchase a portion of any remaining securities related to unexercised Subscription Rights following completion of the Rights Offering (the “Backstop Securities”) and to purchase a portion of a further additional number of shares of Class A Common Stock and/or Class A Warrants (the “Holdback Securities”) (the Rights Offering Securities, Backstop Securities and Holdback Securities, collectively, the “Aggregate Offering”) allocated to such Commitment Party under the Equity Commitment Agreement. As consideration for the respective commitments to purchase Backstop Securities, the Company granted to the Commitment Parties an aggregate of 25,166,668 further shares of Class A Common Stock and Class A Warrants.
	On the Effective Date, all previously issued and outstanding shares of the Company’s common stock were cancelled and retired, and ceased to exist, and the Company issued the two series of common stock and penny warrants (described above) for an aggregate offering amount of $1,510,000. The Company issued 306,857,778 shares of Class A Common Stock and 213,715,419 Class A Warrants pursuant to Rule 506(b) under the Securities Act of 1933, as amended. In addition, the Company issued 5,457,591 shares of Class B Common Stock and 2,469,013 Class B Warrants pursuant to Section 1145 of the Bankruptcy Code. Pursuant to the Confirmation Order, the Class A Common stock and Class B Common stock are deemed to be part of the same class of securities under Section 12 of the Securities Exchange Act of 1934. The proceeds from the issuance of the Rights Offering Securities were used to satisfy certain of the Equity Plan’s cash payment obligations and to provide working capital to fund the Company’s operations after emergence from bankruptcy.
	For additional information regarding the Company’s capital structure see Note 14, “Capital Stock and Stock Compensation,” to these consolidated financial statements.
	Exit Financing and Entry into Credit Facilities
	On the Effective Date, to support the Equity Plan, OSG and certain of its subsidiaries entered into secured debt facilities consisting of: (i) a secured asset-based revolving loan facility of $75,000, among OSG, OBS, certain OBS subsidiaries, Wells Fargo Bank, National Association (“Wells Fargo”) as Administrative Agent, and the other lenders party thereto, (the “OBS ABL Facility”) secured by a first lien on substantially all of the U.S. Flag assets of OBS and its subsidiaries and a second lien on certain other specified U.S. Flag assets; (ii) a secured term loan of $603,000, among OSG, OBS, certain OBS subsidiaries, Jefferies Finance LLC (“Jefferies”), as Administrative Agent, and other lenders party thereto (the “OBS Term Loan”), secured by a first lien on certain specified U.S. Flag assets of OBS and its subsidiaries and a second lien on substantially all of the other U.S. Flag assets of OBS and its subsidiaries; and (iii) a secured term loan facility of $628,375 (the “OIN Term Loan”) and a revolving loan facility of $50,000 (the “OIN Revolver Facility” and, together with the OBS ABL Facility, the OBS Term Loan and the OIN Term Loan, the “Exit Financing Facilities”), among OSG, OIN, OIN Delaware LLC, the sole member of which is OIN, certain OIN subsidiaries, Jefferies, as Administrative Agent, and other lenders party thereto, both secured by a first lien on substantially all of the International Flag assets of OIN and its subsidiaries that, collectively, and together with the proceeds from the issuance of the Securities, provided OSG with the funding necessary to satisfy the Equity Plan’s cash payment obligations, the expenses associated with closing the Exit Financing Facilities and working capital to fund OSG’s operations after emergence from bankruptcy. On August 5, 2014, the available amounts under each of the OBS Term Loan and OIN Term Loan were drawn in full.
	Election 1 and Election 2 Notes and Entry into Second and Third Supplemental Indentures
	Pursuant to the Equity Plan, on the Effective Date, the Company issued two series of 7.50% Notes due 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 Company’s 7.50% Senior Notes due 2024 (the “2024 Notes”) that elected to receive Election 1 Notes or Election 2 Notes, as the case may be. The Election Notes will mature on February 15, 2021. The Election 1 Notes were issued pursuant to a Second Supplemental Indenture dated August 5, 2014 (the “Second Supplemental Indenture”), between the Company and Wilmington Trust Company, as trustee (the “Trustee”), to the Indenture dated as of March 7, 2003, between the Company and the Trustee (the “Base Indenture”). The Election 2 Notes were issued pursuant to a Third Supplemental Indenture dated August 5, 2014 (the “Third Supplemental Indenture”), between the Company and the Trustee, to the Base Indenture. Each electing holder received Election 1 Notes or Election 2 Notes, as applicable, in a principal amount equal to that of the 2024 Notes previously owned by such holder together with, in the case of the Election 1 Notes, a cash payment equal to 1% or, in the case of the Election 2 Notes, a cash payment equal to 3%, of the principal amount of 2024 Notes previously held by such holder. In addition, each electing holder received a cash payment equal to the amount of unpaid and overdue interest that would have been owed under the 2024 Notes held by such holder if the 2024 Notes were reinstated and interest was paid through the Effective Date. Holders of Election 2 Notes did not receive interest on overdue interest. Holders of 2024 Notes that did not elect to receive Election Notes, had their 2024 Notes reinstated in an aggregate principal amount of $784 and received a cash payment equal to the amount of unpaid and overdue interest.
	The table below presents changes to our debt outstanding, as a result of the Equity Plan effects:
			Debt as of				Debt				Debt as of
			December 31,		Less Debt		Reinstated or		Exit		December 31,
			2013  (a)		Repaid		Exchanged		Financing  (c)		2014
	Unsecured Revolving Credit Facility		$	1,489,000	$	-1,489,000	$	-	$	-	$	-
	8.125% Notes due 2018			300,000				300,000				300,000
	7.50% Notes due 2021			146,000				146,000				146,000
	through 2024
	8.75% Debentures due 2013			63,603		-63,603		-				-
	Secured Term Loans due			565,956		-565,956						-
	through 2023 (b)
	OBS Term Loan due 2019					-3,015				601,520		598,505
	OIN Term Loan due 2019					-3,142				627,304		624,162
			$	2,564,559	$	-2,124,716	$	446,000	$	1,228,824	$	1,668,667
	(a)	Debt (reflects add back of $2,909 of original issue discount) classified as liabilities subject to compromise at December 31, 2013.
	(b)	Debt was reported in liabilities subject to compromise net of Adequate Protection Interest Payments of $12,731, which had been classified as a reduction of debt through March 31, 2014.
	(c)	OBS and OIN Term Loan balances are net of unamortized original issue discounts as of December 31, 2014 of $1,480 and $1,071, respectively.
	For additional information regarding the Company’s Exit Financing Facilities see Note 10, “Debt,” to these consolidated financial statements.
	The Company believes the actions it has taken, including implementing the Equity Plan, closing on the Exit Financing Facilities, issuing equity under the Rights Offering and Equity Commitment Agreement, reducing its activities in certain non-core areas and disposing of underperforming assets, will allow the Company to generate sufficient cash to support its operations over the next twelve months and beyond. The Company’s ability to generate sufficient cash is dependent upon, among other things, continuing to improve the profitability of its operations and future cash flows which contemplates an improvement in industry conditions.
	Financial Reporting
	The Company prepared its consolidated financial statements in accordance with ASC 852, Reorganizations, and on a going-concern basis, which assumes continuity of operations, realization of assets and liabilities in the ordinary course.
	ASC 852 requires that financial statements for periods subsequent to the filing of the Chapter 11 Cases distinguish transactions and events that are directly associated with the reorganization from the ongoing operations of the business. Accordingly all transactions (including but not limited to, all professional fees and other expenses, realized gains and losses, and provisions for losses) directly associated with the reorganization and restructuring of the business are reported separately as reorganization items in the consolidated statements of operations. The balance sheet, prior to emergence, was required to distinguish pre-petition liabilities subject to compromise from both those pre-petition liabilities that are not subject to compromise and from post-petition liabilities.
	Upon the Company’s emergence from Chapter 11 bankruptcy proceedings on August 5, 2014, the Company was not required to apply fresh start accounting based on the provisions of ASC 852 since holders of the Company’s outstanding common shares immediately before confirmation of the Equity Plan received more than 50% of the Company’s outstanding common shares upon emergence. Accordingly, a new reporting entity was not created for accounting purposes.
	Liabilities Subject to Compromise
	As a result of the filing of the Chapter 11 Cases on November 14, 2012, the payment of pre-petition indebtedness was generally subject to compromise pursuant to a plan of reorganization. Generally, actions to enforce or otherwise effect payment of pre-bankruptcy filing liabilities were stayed. Although payment of pre-petition claims generally was not permitted, the Bankruptcy Court granted the Debtors authority to pay certain pre-petition claims in designated categories and subject to certain terms and conditions. This relief generally was designed to preserve the value of the Debtors’ businesses and assets. Among other things, the Bankruptcy Court authorized the Debtors to pay certain pre-petition claims relating to employee wages and benefits, taxes and critical and foreign vendors. During the bankruptcy process the Debtors continued to pay undisputed post-petition liabilities in the ordinary course of business.
	Prior to emergence, pre-petition liabilities that were subject to compromise were required to be reported at the amounts expected to be allowed. Therefore liabilities subject to compromise in the table below reflected management’s estimates of amounts expected to be allowed by the Bankruptcy Court, based upon the status of negotiations with creditors. Upon emergence or shortly thereafter, amounts recorded as liabilities subject to compromise were either settled, as reflected in the table below or such amounts have been reclassified to current or non-current liabilities in the consolidated balance sheet, based upon management’s judgment as to the timing for settlement of such claims.
	Liabilities subject to compromise as of December 31, 2013 which were settled or reclassified during the year ended December 31, 2014:
					Change in
					Estimated
			December 31,		Allowed Claim		Cash				December 31,
	Liabilities Subject to Compromise		2013		2014		Payment		Reclassified  (a)		2014
	Pre-petition accounts payable and other accrued liabilities		$	4,565	$	21,748	$	-12,821	$	-13,492	$	-
	Secured long-term debt and accrued interest			569,408		20,577		-589,985		-		-
	Unsecured senior notes			500,780		8,823		-63,603		-446,000		-
	Unsecured revolving credit facility			1,489,000		-		-1,489,000		-		-
	Accrued interest on unsecured revolving credit facility and senior notes			10,878		167,909		-177,018		-1,769		-
	Derivative liabilities			3,566		186		-3,662		-90		-
	Accrued post-petition interest on other claims			-		880		-		-880		-
	Accrued liabilities related to rejected executory contracts			282,599		14,550		-296,958		-191		-
	Pension and other postretirement benefit plan liabilities			27,377		-1,257		-14,429		-11,691		-
	Total liabilities subject to compromise		$	2,888,173	$	233,416	$	-2,647,476	$	-474,113	$	-
		(a)	Amounts reclassified included $16,231 to accounts payable, accrued expenses and other current liabilities, $446,000 to long-term debt relating to the Unsecured Senior Notes and $11,882 to other liabilities.
	Reorganization Items, net
	Reorganization items, net represent amounts incurred subsequent to the bankruptcy filing as a direct result of the filing of the Chapter 11 Cases and are comprised of the following:
	For the year ended December 31,		2014		2013		2012
	Trustee fees		$	2,751	$	3,006	$	672
	Professional fees			112,678		62,823		7,889
Provision for and expenses incurred on rejected executory			6,864		256,522		30,187
contracts including post-petition interest
Deferred financing fees write-off			-		4,603		2,365
Provision for post-petition interest on debt facilities			15,416		-		-
Provision for post-petition interest on claims			1,073		-		-
2004 Stock Incentive Plan			1,796		-		-
Provision for class action lawsuit and other subordinated claims			17,000		-		-
Other claim adjustments			13,895		216		-
		$	171,473	$	327,170	$	41,113
The table above reflects a provision for the Company’s agreement to a stipulated settlement for a Class Action claim filed with the Bankruptcy Court, which provides for cash payments of $15,000 and certain payments contingent upon the outcome of the Company's malpractice lawsuit against Proskauer and other events. The Company incurred fees totaling $15,258, $14,950 and $2,632 during the years ended December 31, 2014, 2013 and 2012, respectively, for financial and reorganization services rendered to the Company by Greylock Partners LLC, a company founded and managed by a member of the Company’s Board of Directors. Such related party expenses are included in professional fees in the table above.
Contractual post-petition interest for debt facilities and certain rejected executory contracts is reported as interest expense in the consolidated statement of operations for the year ended December 31, 2014. See Note 10, “Debt.”
Cash paid for reorganization items was $443,296, $65,949 and $6,437 for the years ended December 31, 2014, 2013 and 2012, respectively.

SUMMARY_OF_SIGNIFICANT_ACCOUNT

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Business Description and Basis of Presentation [Text Block]	NOTE 3 — 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. Management has designated cash reserves of $53,085 as of December 31, 2014 to be utilized for the settlement of certain unsecured claims, including disputed unsecured claims, and other bankruptcy related costs related to the Company’s recent emergence from bankruptcy. Such cash reserves, which are considered restricted cash due to management’s intent regarding these funds, are included in restricted cash in the current assets section of the consolidated balance sheet based on management’s estimate of when these funds are likely to be disbursed. Such restricted cash reserves will be subject to adjustment based upon the settlement of claims and other bankruptcy related costs and changes in estimates of future funding requirements. Additionally, restricted cash as of December 31, 2014 includes $70,093 of legally restricted cash relating to the OIN Term Loan. The OIN Term Loan stipulates that if annual aggregate cash proceeds of OIN asset sales exceed $5,000, cash proceeds from each such sale are required to be reinvested in vessels within twelve months of such sale or be used to prepay the principal balance outstanding of the OIN Term Loan. Activity relating to restricted cash is reflected in investing activities in the consolidated statements of cash flow. See Note 10, “Debt,” for a further discussion of the OIN Term Loan.
	2	Inventories—Inventories, which consists principally of fuel, are stated at cost determined on a first-in, first-out basis.
	3	Vessels, 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 lives of the vessels, which are generally 25 years. Each vessel’s salvage value is equal to the product of its lightweight tonnage and an estimated scrap rate of $300 per ton.
		Other property, including buildings and 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 to 35 years.
	Interest costs are capitalized to vessels during the period that vessels are under construction. Interest capitalized aggregated $0 in 2014 and 2013 and $1,060 in 2012.
	Expenditures incurred during a drydocking are deferred and amortized on the straight-line basis over 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.
	4	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, an impairment charge would be recognized 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. If using an income approach in determining the fair value of a vessel, the Company will consider the discounted cash flows resulting from highest and best use of the vessel asset from a market-participant’s perspective. Alternatively, if using a market approach, the Company will obtain third party appraisals of the estimated fair value of the vessel. A long-lived asset impairment charge results in a new cost basis being established for the relevant long-lived asset. See Note 6, “Vessels, Deferred Drydock and Other Property,” for further discussion on the impairment charges recognized during the three years ended December 31, 2014.
	5	Goodwill and intangible assets—Goodwill and indefinite lived intangible assets acquired in a business combination are not amortized but are reviewed for impairment annually or more frequently if impairment indicators arise. 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 may be impaired.
	The Company’s intangible assets consist primarily of long-term customer relationships acquired as part of the 2006 purchase of Maritrans, Inc. (a component of the U.S. Flag business segment) and the 2007 purchase of the Heidmar Lightering business (a component of the International Crude Tankers business segment). The long-term customer relationships are being amortized on a straight-line basis over 20 years. The Company’s January 2014 announcement of its plans to (i) outsource the technical and commercial management of substantially all of its International Flag fleet and (ii) to exit the full service International Crude Tankers Lightering business by September 30, 2014 were determined to be triggering events warranting an interim impairment test of the $9,589 December 31, 2013 carrying value of Goodwill related to the acquisition of the Heidmar Lightering business as well as all the long-lived assets utilized in the International Crude Tankers Lightering business. To measure fair value, the Company reduced its estimates of future cash flows from this business to reflect the consideration above. The Company recorded a goodwill impairment charge of $9,589 in the quarter ended December 31, 2013.
		See Note 9, “Intangible Assets,” for further information on intangible assets impairment charges recognized during the three years ended December 31, 2014.
	6	Deferred finance charges—Finance charges incurred in the arrangement of debt are deferred and amortized to interest expense on either an effective interest method or straight-line basis over the life of the related debt. Unamortized deferred finance charges of $48,186 relating to the Exit Financing Facilities are included in other assets on the consolidated balance sheet as of December 31, 2014.
	On November 14, 2012, amortization ceased on $10,517 of deferred financing costs relating to the Unsecured Senior Notes, the $1,500,000 Unsecured Revolving Credit facility and the secured term loans, when such indebtedness and the related deferred financing costs were reclassified to Liabilities Subject to Compromise in the consolidated balance sheets (see Note 10,“Debt”).
	As of December 2013, the Company had determined that it was more likely than not that the Unsecured Revolving Credit Facility and the Secured Term Loan facilities would not exist in the post emergence period and therefore the related aggregate unamortized deferred financing costs of $4,603 were written off and recorded as a charge to reorganization items, net in the consolidated statement of operations for the year ended December 31, 2013.
	As of December 2013, liabilities subject to compromise included reserves for estimated allowed claims relating to the Company’s Unsecured Senior Notes due in 2013, 2018 and 2024. Under ASC 852, original issue discounts and deferred financing costs are viewed as part of the valuation of the pre-petition debt that is subject to compromise. Therefore, the Company recorded charges of $2,909 and $5,914 as reorganization items in the consolidated statement of operations for the year ended December 31, 2014 for unamortized original issue discount and unamortized deferred financing costs related to the Unsecured Senior Notes since such Unsecured Senior Notes were reinstated at the full amount of face value outstanding.
	Interest expense relating to the amortization of deferred financing costs amounted to $3,973 in 2014, $0 in 2013 and $15,260 in 2012. The 2012 interest expense includes the write-off of $12,540 in deferred financing costs relating to the $900,000 Unsecured Forward Start credit facility as the Company’s Chapter 11 filing effectively terminated this credit facility agreement.
	7	Revenue and expense recognition—Revenues from time charters and bareboat charters are accounted for as operating leases and are thus recognized ratably over the rental periods of such charters, as service is performed. Voyage revenues and expenses are recognized ratably over the estimated length of each voyage, calculated on a discharge-to-discharge basis and, therefore, are allocated between reporting periods based on the relative transit time in each period. The impact of recognizing voyage expenses ratably over the length of each voyage is not materially different on a quarterly and annual basis from a method of recognizing such costs as incurred. OSG does not begin recognizing voyage revenue until a Charter has been agreed to by both the Company and the customer, even if the vessel has discharged its cargo and is sailing to the anticipated load port on its next voyage.
	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 paid by the Company’s customers.
	For the Company’s vessels operating in pools, revenues and voyage expenses are pooled and allocated to each pool’s participants on a time charter equivalent (“TCE”) basis in accordance with an agreed-upon formula. Such TCE revenues are reported as pool revenues in the accompanying consolidated statement of operations. For the pools in which the Company participates, management monitors, among other things, the relative proportion of the Company’s vessels operating in each of the pools to the total number of vessels in each of the respective pools, and assesses whether or not OSG’s participation interest in each of the pools is sufficiently significant so as to determine that OSG has effective control of the pool. Management determined that as of June 30, 2013, it had effective control of one of the pools in which the Company participated. Such pool is not a legal entity but operates under a contractual agreement. Therefore, effective July 1, 2013 and through to June 30, 2014, when the Company exited this pool, the Company’s allocated TCE revenues for such pool were reported on a gross basis as voyage charter revenues and voyage expenses in the consolidated statement of operations. The impact of this method of presenting earnings for this pool was an increase in both voyage charter revenues and voyage expenses of $40,454 and $70,817 for the years ended December 31, 2014 and 2013, respectively.
		8	Concentration of Credit Risk—Financial instruments that potentially subject the Company to concentrations of credit risk are voyage receivables due from charterers and pools in which the Company participates. With respect to voyage receivables, the Company limits its credit risk by performing ongoing credit evaluations. Voyage receivables reflected in the consolidated balance sheets as of December 31, 2014 and 2013 are net of an allowance for doubtful accounts of $352 and $2,024, respectively. The provisions for doubtful accounts for the years ended December 31, 2014, 2013 and 2012 were not material.
	During the three years ended December 31, 2014, the Company did not have any individual customers who accounted for 10% or more of its revenues apart from the pools in which it participates. The pools in which the Company participates accounted for 77% and 58% of consolidated voyage receivables at December 31, 2014 and 2013, respectively. During the year ended December 31, 2014, the Company increased both the number of vessels placed in pools for commercial management and the number of pools in which it participates.
		9	Derivatives—ASC 815, Derivatives and Hedging, requires the Company to recognize all derivatives on the balance sheet at fair value. Derivatives that are not effective hedges must be adjusted to fair value through earnings. If the derivative is an effective hedge, depending on the nature of the hedge, a change in the fair value of the derivative is either offset against the change in fair value of the hedged item (fair value hedge), or recognized in other comprehensive income/(loss) and reclassified into earnings in the same period or periods during which the hedge transaction affects earnings (cash flow hedge). The ineffective portion (that is, the change in fair value of the derivative that does not offset the change in fair value of the hedged item) of an effective hedge and the full amount of the change in fair value of derivative instruments that do not qualify for hedge accounting are immediately recognized in earnings.
	The Company formally documents all relationships between hedging instruments and hedged items, as well as its risk-management objective and strategy for undertaking various hedge transactions. This process includes linking all derivatives that are designated as cash flow hedges to forecasted transactions. The Company also formally assesses (both at the hedge's inception and on an ongoing basis) whether the derivatives that are used in hedging transactions have been highly effective in offsetting changes in the cash flows of hedged items and whether those derivatives may be expected to remain highly effective in future periods. When it is determined that a derivative is not (or has ceased to be) highly effective as a hedge, the Company discontinues hedge accounting prospectively, as discussed below.
	The Company discontinues hedge accounting prospectively when (1) it determines that the derivative is no longer effective in offsetting changes in the cash flows of a hedged item such as forecasted transactions; (2) the derivative expires or is sold, terminated, or exercised; (3) it is no longer probable that the forecasted transaction will occur; or (4) management determines that designating the derivative as a hedging instrument is no longer appropriate or desired.
	When the Company discontinues hedge accounting because it is no longer probable that the forecasted transaction will occur in the originally expected period, the gain or loss on the derivative remains in accumulated other comprehensive income and is reclassified into earnings when the forecasted transaction affects earnings. However, if it is probable that a forecasted transaction will not occur by the end of the originally specified time period or within an additional two-month period of time thereafter, the gains and losses that were accumulated in other comprehensive income will be recognized immediately in earnings. In all situations in which hedge accounting is discontinued and the derivative remains outstanding, the Company will carry the derivative at its fair value on the balance sheet, recognizing changes in the fair value in current-period earnings, unless it is designated in a new hedging relationship.
	During the year ended December 31, 2014, no ineffectiveness gains or losses were recorded in earnings relative to interest rate caps entered into by the Company or its subsidiaries that qualified for hedge accounting. Any gain or loss realized upon the early termination of an interest rate cap is recognized as an adjustment of interest expense over the shorter of the remaining term of the cap or the hedged debt. See Note 11, “Fair Value of Financial Instruments, Derivatives and Fair Value Disclosures,” for additional disclosures on the Company’s interest rate caps and other financial instruments.
		10	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 OSG 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, on the basis of a two-step process whereby (1) the Company first determines whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position and (2) those tax positions that meet the more-likely-than-not recognition threshold, the Company recognizes the largest amount of tax benefit that is greater than 50% likely to be realized upon ultimate settlement with the related tax authority.
		11	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 goodwill, intangible and other long-lived assets, liabilities incurred relating to pension benefits, liabilities subject to compromise and income taxes. Actual results could differ from those estimates.
		12	Issuance of shares or units by subsidiaries—The Company accounts for gains or losses from the issuance of shares or units by its subsidiaries as an adjustment to equity.
		13	Recently adopted accounting standards—In February 2013, the FASB issued ASU No. 2013-04, Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation is Fixed at the Reporting Date, which provides guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation within the scope of this guidance is fixed at the reporting date, except for obligations addressed within existing U.S. GAAP guidance. This accounting standard was effective for public entities for annual periods, and interim periods within those annual periods, beginning after December 31, 2013. The Company’s adoption of this new accounting guidance on January 1, 2014 did not have a significant impact on its consolidated financial statements.
	In July 2013, the FASB issued ASU No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists, to address the diversity in practice in presenting unrecognized tax benefits on the balance sheet. The standard provides explicit guidance requiring that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except when certain circumstances enumerated in the standard exist. The required presentation should better reflect the manner in which an entity would settle at the reporting date any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses or tax carryforwards exist. The amendments in this update were effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2013. The Company’s adoption of this new accounting guidance on January 1, 2014 did not have a significant impact on its consolidated financial statements.
		14	Recently issued accounting standards— In April 2014, the FASB issued ASU No. 2014-08, Presentation of Financial Statements (ASC 205) and Property Plant and Equipment (ASC 360), which amends the criteria for reporting discontinued operations. The amendments require that only disposals that represent a strategic shift that has (or will have) a major effect on the entity’s operations and financial results would qualify as discontinued operations. Therefore disposals of small groups of assets that are recurring in nature are less likely to qualify for discontinued operations presentation as a result of the amendments. In addition, the new guidance expands the disclosure requirements for disposals that meet the definition of a discontinued operation and requires entities to disclose information about disposals of individually significant components that do not meet the definition of discontinued operations. The amendments are effective for public companies for annual periods and interim periods within those annual periods beginning after December 15, 2014. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. The Company does not expect the adoption of the amendments to the accounting standards to have a significant impact on its consolidated financial statements.
	In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (ASC 606) to provide a single, comprehensive revenue recognition model for all contracts with customers to improve comparability within industries, across industries, and across capital markets. The revenue standard contains principles that an entity will apply to determine the measurement and timing of when it is recognized. The underlying principle is that an entity will recognize revenue to depict the transfer of goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services. The revenue standard is effective for the first interim period within annual reporting periods beginning after December 15, 2016 for public companies and early adoption is not permitted. The requirements of this standard include a significant increase in required disclosures. Management is analyzing the impact of the adoption of this guidance on its consolidated financial statements, including assessing changes that might be necessary to information technology systems, processes and internal controls to capture new data and address changes in financial reporting.
	In August 2014, the FASB issued ASU No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (ASC 205) that explicitly requires management to assess an entity’s ability to continue as a going concern and disclose going concern uncertainties in connection with each annual and interim period. The new standard requires management to assess if there is substantial doubt about an entity’s ability to continue to meet its obligations within one year after the reporting date based upon management’s consideration of relevant conditions that are known (and reasonably knowable) at the issuance date. The new standard defines substantial doubt and provides example indicators. Disclosures will be required if conditions give rise to substantial doubt. However, management will need to assess if its plans will alleviate substantial doubt to determine the specific disclosures. The new standard will be effective for all entities in the first annual period ending after December 15, 2016. Earlier application is permitted. Management does not expect the adoption of this accounting standard to have a significant impact on its consolidated financial statements.

EARNINGS_PER_COMMON_SHARE

EARNINGS PER COMMON SHARE	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	NOTE 4 — EARNINGS PER COMMON SHARE:
	As discussed in Note 2, “Chapter 11 Filing and Emergence from Bankruptcy,” all shares of our common stock prior to the Effective Date were cancelled pursuant to the Equity Plan. Post-emergence, the Company presents common share information for the Class A and Class B securities.
	Basic earnings per share is computed by dividing earnings/(loss), after the deduction of dividends and undistributed earnings allocated to participating securities, by the weighted average number of common shares outstanding during the period. The computation of diluted earnings per share assumes the issuance of common stock for all potentially dilutive stock options and restricted stock units not classified as participating securities. Participating securities are defined by ASC 260, Earnings Per Share, as unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents and are included in the computation of earnings per share pursuant to the two-class method.
	Class A
	There were 324,997 shares considered to be participating securities as of December 31, 2014. Such participating securities were allocated a portion of income under the two class method for the three months ended December 31, 2014, but no allocation of loss for the year ended December 31, 2014 since the holders of the participating securities do not participate in losses.
	As management deemed the exercise price for the Class A Warrants of $0.01 per share to be nominal, warrant proceeds are ignored and shares issuable upon Class A Warrant exercise are included in the calculation of Class A basis weighted average common shares outstanding for the period.
	The computation of diluted earnings per share assumes the issuance of common stock for all potentially dilutive stock options and restricted stock units not classified as participating securities. As of December 31, 2014 there were 196,349 shares of Class A restricted stock units and 453,586 Class A stock options outstanding and considered to be potentially dilutive securities.
	Class B
	There are no participating securities or potentially dilutive securities relating to the Class B Common Stock.
	As discussed in Note 2, all shares of our common stock outstanding prior to the Effective Date were cancelled pursuant to the Equity Plan. Although loss per share information for the years ended December 31, 2013 and 2012 is presented it is not comparable to the information presented for the year ended December 31, 2014 due to the changes in our capital structure.
	The components of the calculation of basic earnings per share and diluted earnings per share are as follows:
	For the year ended December 31,		2014		2013		2012
	Net loss		$	-152,273	$	-638,230	$	-480,114
	Weighted average common shares outstanding:
	Common stock - basic and diluted					30,482,818		30,339,258
	Class A Common stock - basic and diluted (1)			212,507,963
	Class B Common stock - basic and diluted (2)			21,372,197
	-1	The weighted average common shares outstanding for Class A Common Stock basic and diluted was calculated using no Class A Common Stock and no Class A Warrants outstanding for the period January 1, 2014 through August 4, 2014. 310,419,766 Class A Common Stock and 210,153,431 Class A Warrants were used in calculating the weighted average common shares outstanding for the period August 5, 2014 through December 31, 2014.
	-2	The weighted average common shares outstanding for Class B Common Stock basic and diluted was calculated using the common shares outstanding for each of the years in the two year period ended December 31, 2013 and for the period January 1, 2014 through August 4, 2014 and Class B Common Stock outstanding and Class B Warrants outstanding for the period August 5, 2014 through December 31, 2014. As of December 31, 2014 there are 2,908,149 Class B Warrants outstanding.
	For annual earnings per share calculations, there were no dilutive equity awards outstanding as of December 31, 2014, 2013 or 2012. Awards of 974,932, 1,041,723 and 2,383,896 shares of common stock for 2014, 2013 and 2012, respectively, were not included in the computation of annual diluted earnings per share because inclusion of these awards would be anti-dilutive.

BUSINESS_AND_SEGMENT_REPORTING

BUSINESS AND SEGMENT REPORTING	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	NOTE 5 — BUSINESS AND SEGMENT REPORTING:
	The Company is engaged primarily in the ocean transportation of crude oil and petroleum products in both the international market and the U.S. Flag trades through the ownership and operation of a diversified fleet of vessels. The shipping industry has many distinct market segments based, in large part, on the size and design configuration of vessels required and, in some cases, on the flag of registry. Rates in each market segment are determined by a variety of factors affecting the supply and demand for vessels to move cargoes in the trades for which they are suited. Tankers are not bound to specific ports or schedules and therefore can respond to market opportunities by moving between trades and geographical areas. The Company charters its vessels to commercial shippers and U.S. and foreign governments and governmental agencies primarily on voyage charters and on time charters.
	The Company has three reportable segments: International Crude Tankers, International Product Carriers and U.S. Flag vessels. Income/(loss) from vessel operations for segment reporting is defined as income/(loss) from vessel operations before general and administrative expenses, technical management transition costs, severance costs, goodwill and intangible assets impairment charges, and gain/(loss) on disposal of vessels, including impairment charges. The accounting policies followed by the reportable segments are the same as those followed in the preparation of the Company’s consolidated financial statements.
	The U.S. Flag segment includes an International Flag Product Carrier that exited the U.S. Maritime Security Program in the fourth quarter of 2012 but was still owned by a U.S. domiciled corporation through June 30, 2014. As a result of the June 30, 2014 intercompany sale of the vessel to a Marshall Islands domiciled subsidiary of the Company, effective July 1, 2014, the results of this vessel, subsequent to its reflagging to the Marshall Islands in November 2012, were removed from the U.S. Flag segment and presented in the International Product Carriers segment for all periods presented.
	Information about the Company’s reportable segments as of and for each of the years in the three year period ended December 31, 2014 follows:
		International
		Crude		Product
		Tankers		Carriers		Other		U.S.		Totals
	2014
	Shipping revenues	$	363,331	$	153,665	$	22	$	440,416	$	957,434
	Time charter equivalent revenues		228,295		118,669		22		414,373		761,359
	Depreciation and amortization		56,210		26,850		2,114		66,584		151,758
	Gain/(loss) on disposal of vessels,
	including impairments		8,017		-44		1,970		589		10,532
	Income/(loss) from vessel operations		65,532		3,429		-1,877		121,649		188,733
	Equity in income of affiliated companies		30,925		-		7,040		3,390		41,355
	Investments in and advances to affiliated companies at December 31, 2014		277,816		11,334		42,286		3,427		334,863
	Total assets at December 31, 2014		1,191,490		551,693		42,286		1,052,056		2,837,525
	Expenditures for vessels		1,437		20,017		-		10,958		32,412
	Payments for drydockings		5,286		6,792		-		25,739		37,817
	2013
	Shipping revenues		352,871		229,202		3,286		430,637		1,015,996
	Time charter equivalent revenues		209,876		149,349		3,225		400,878		763,328
	Depreciation and amortization		76,086		30,226		2,818		67,146		176,276
	Gain/(loss) on disposal of vessels, including impairments		-328,146		-38,395		117		1,167		-365,257
	Goodwill and other intangibles impairment charge		-16,214		-		-		-		-16,214
	Income/(loss) from vessel operations		-17,806		22,510		-3,104		113,433		115,033
	Equity in income of affiliated companies		29,746		-		7,542		3,606		40,894
	Investments in and advances to affiliated companies at December 31, 2013		271,009		4,505		44,278		3,535		323,327
	Total assets at December 31, 2013		1,356,796		565,387		44,591		1,040,541		3,007,315
	Expenditures for vessels		26,106		7,619		-3		2,655		36,377
	Payments for drydockings		8,003		2,270		-		11,751		22,024
	2012
	Shipping revenues		343,541		332,922		10,156		450,515		1,137,134
	Time charter equivalent revenues		256,843		172,356		10,071		401,576		840,846
	Depreciation and amortization		83,558		43,577		5,392		68,757		201,284
	Gain/(loss) on disposal of vessels		-102,242		-160,706		8,085		-16,496		-271,359
	Income/(loss) from vessel operations		-70,909		-59,378		-4,243		118,664		-15,866
	Equity in income/(loss) of affiliated companies		18,658		-		11,378		3,450		33,486
	Investments in and advances to affiliated companies at December 31, 2012		241,198		6,000		1,700		3,500		252,398
	Total assets at December 31, 2012		1,739,740		642,379		2,333		1,101,720		3,486,172
	Expenditures for vessels		33,488		18,567		6		543		52,604
	Payments for drydockings		20,063		7,166		-		18,761		45,990
	The joint venture with four LNG Carriers is included in Other along with one chartered-in Chemical Carrier, which was redelivered to its owners in October 2013 and one owned Pure Car Carrier, which was disposed of in October 2012. The joint venture with two floating storage and offloading service vessels is included in the International Crude Tankers Segment.
	Reconciliations of time charter equivalent revenues of the segments to shipping revenues as reported in the consolidated statements of operations follow:
	For the year ended December 31,	2014		2013		2012
	Time charter equivalent revenues	$	761,359	$	763,328	$	840,846
	Add: Voyage expenses		196,075		252,668		296,288
	Shipping revenues	$	957,434	$	1,015,996	$	1,137,134
	Consistent with general practice in the shipping industry, the Company uses time charter equivalent revenues, which represents shipping revenues less voyage expenses, as a measure to compare revenue generated from a voyage charter to revenue generated from a time charter. Time charter equivalent revenues, a non-GAAP measure, provides additional meaningful information in conjunction with shipping revenues, the most directly comparable GAAP measure, because it assists Company management in making decisions regarding the deployment and use of its vessels and in evaluating their financial performance.
	Reconciliations of income/(loss) from vessel operations of the segments to loss before reorganization items and income taxes, as reported in the consolidated statements of operations follow:
	For the year ended December 31,	2014		2013		2012
	Total income (loss) from vessel operations of all segments	$	188,733	$	115,033	$	-15,866
	General and administrative expenses		-83,716		-97,663		-88,845
	Technical management transition costs		-3,427		-		-
	Severance and relocation costs		-17,020		-3,097		-3,163
	Goodwill and other intangibles impairment charge		-		-16,214		-
	Gain/(loss) on disposal of vessels, including impairments		10,532		-365,257		-271,359
	Consolidated income/(loss) from vessel operations		95,102		-367,198		-379,233
	Equity in income of affiliated companies		41,355		40,894		33,486
	Other income (expense)		426		849		-1,314
	Interest expense		-232,491		-350		-93,421
	Loss before reorganization items and income taxes	$	-95,608	$	-325,805	$	-440,482
	Reconciliations of total assets of the segments to amounts included in the consolidated balance sheets follow:
At December 31,	2014		2013
Total assets of all segments	$	2,837,525	$	3,007,315
Corporate cash and cash equivalents		389,226		601,927
Restricted cash		123,178		-
Other unallocated amounts		86,562		35,252
Consolidated total assets	$	3,436,491	$	3,644,494
Certain additional information about the Company’s operations for each of the years in the three year period ended December 31, 2014 follows:
			International
	Consolidated		Flag		U.S. Flag
2014
Shipping revenues	$	957,434	$	517,018	$	440,416
Total vessels, deferred drydock and other property at
31-Dec-14		2,275,630		1,348,044		927,586
2013
Shipping revenues		1,015,996		585,359		430,637
Total vessels, deferred drydock and other property at
31-Dec-13		2,416,600		1,466,970		949,630
2012
Shipping revenues		1,137,134		686,619		450,515
Total vessels, deferred drydock and other property at
31-Dec-12		2,911,706		1,911,228		1,000,478

VESSELS_DEFERRED_DRYDOCK_AND_O

VESSELS, DEFERRED DRYDOCK AND OTHER PROPERTY	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	NOTE 6 — VESSELS, DEFERRED DRYDOCK AND OTHER PROPERTY:
	Vessels and other property consist of the following:
	As of December 31,		2014		2013
	Vessels, at cost		$	2,804,179	$	2,784,023
	Accumulated depreciation			-603,603		-495,391
	Vessels, net			2,200,576		2,288,632
	Construction in progress			-		54,644
	Other property, at cost			34,360		45,633
	Accumulated depreciation and amortization			-21,719		-29,557
	Other property, net			12,641		16,076
	Total Vessels and other property		$	2,213,217	$	2,359,352
	A breakdown of the carrying value of the Company’s vessels, excluding construction in progress, by reportable segment and fleet as of December 31, 2014 and 2013 follows:
	As of December 31, 2014
										Average
							Net			Vessel		Number of
					Accumulated		Carrying			Age		Owned
			Cost		Depreciation		Value			(by dwt)		Vessels
	International Flag Crude Tankers
	VLCCs (includes ULCC)		$	681,743	$	-187,139	$	494,604			10.1		9
	Aframaxes			269,728		-66,800		202,928			9.6		7
	Panamaxes			128,564		-7,046		121,518			12.3		8
	Total International Flag Crude Tankers			1,080,035		-260,985		819,050	(1), (4)		10.3		24
	International Flag Product Carriers
	Aframax			73,681		-1,191		72,490			0.4		1
	Panamax			196,472		-39,519		156,953			6.1		4
	Handysize			297,928		-39,879		258,049			9.8		14
	Total International Flag Product Carriers			568,081		-80,589		487,492	(2), (4)		7.7		19
	Total U.S. Flag Vessels			1,156,063		-262,029		894,034	-3		7.4		14
	Fleet Total		$	2,804,179	$	-603,603	$	2,200,576			9.5		57
		-1	Includes one ULCC, eight VLCCs, seven Aframaxes and seven Panamaxes that are pledged as collateral under both the OIN Revolver Facility due on February 5, 2019 and the OIN Secured Term Loan due on August 5, 2019 with an aggregate carrying value of $802,604.
		-2	Includes one Aframax, four Panamaxes and 13 Handysize Product Carriers that are pledged as collateral under both the OIN Revolver Facility and the OIN Secured Term Loan with an aggregate carrying value of $478,473.
		-3	Includes one Handysize Product Carrier and eight ATB tug barge units that are pledged as collateral under the OBS ABL Facility due on February 5, 2019 and three Handysize Product Carriers that are pledged as collateral under the OBS Term Loan due on August 5, 2019. The OBS Term Loan has a second lien on the vessels pledged under the OBS ABL Facility and the OBS ABL Facility has a second lien on the vessels pledged under the OBS Term Loan. Vessels pledged as
			collateral under the OBS Term Loan and OBS ABL Facility have aggregate carrying values of $526,036. (See Note 10, “Debt,” to these consolidated financial statements for additional information regarding secured loan facilities).
		-4	The International Flag Crude Tankers segment and the International Flag Product Carriers segment include vessels with an aggregate carrying value of $399,529 and $303,182, respectively, which the Company believes exceeds their aggregate market values of approximately $343,167 and $223,000, by $56,362 and $80,182, respectively.
	As of December 31, 2013
							Net			Average		Number of
					Accumulated		Carrying			Vessel Age		Owned
			Cost		Depreciation		Value			(by dwt)		Vessels
	International Flag Crude Tankers
	VLCCs (includes ULCC)		$	722,863	$	-164,911	$	557,952			10.5		11
	Aframaxes (includes OSG Lightering fleet)			279,506		-57,403		222,103			10.7		9
	Panamaxes			145,168		-		145,168			11.1		9
	Total International Flag Crude Tankers			1,147,537		-222,314		925,223			10.6		29
	International Flag Product Carriers
	Panamax			196,470		-31,856		164,614			5.1		4
	Handysize			297,565		-26,602		270,963			8.8		14
	Total International Flag Product Carriers			494,035		-58,458		435,577			7.6		18
	Total U.S. Flag Vessels			1,142,451		-214,619		927,832			6.4		14
	Fleet Total		$	2,784,023	$	-495,391	$	2,288,632			9.8		61
	Vessel activity, excluding construction in progress, for the three years ended December 31, 2014 is summarized as follows:
					Accumulated		Net Book
			Vessel Cost		Depreciation		Value
	Balance at December 31, 2011		$	3,776,344	$	-818,555	$	2,957,789
	Purchases and vessel additions			7,983		-
	Transfers from construction in progress			189,105		-
	Disposals and transfers to held for sale			-29,653		25,104
	Depreciation			-		-154,997
	Impairment			-635,966		357,192
	Balance at December 31, 2012			3,307,813		-591,256		2,716,557
	Purchases and vessel additions			2,809		-
	Transfers from construction in progress			71,553		-
	Disposals			-4,951		1,837
	Depreciation			-		-133,197
	Impairment			-593,201		227,225
Balance at December 31, 2013			2,784,023		-495,391		2,288,632
Purchases and vessel additions			27,236		-
Transfers from construction in progress			62,475		-
Disposals			-69,555		4,808
Depreciation			-		-113,020
Balance at December 31, 2014		$	2,804,179	$	-603,603	$	2,200,576
The total of purchases and vessel additions and transfers from construction in progress will differ from expenditures for vessels as shown in the consolidated statements of cash flows because of expenditures for vessels remaining under construction at the beginning and end of each respective period.
Vessel Impairments
International Fleet
In evaluating whether or not events or circumstances existing during the fourth quarter of 2014 resulted in a triggering event for impairment testing to the International Flag fleet, Management gave consideration to average TCE rates earned by the Company’s vessels versus the Company’s 2014 budget, near term rate forecasts, and significant changes in third party valuation appraisals of vessels. Management noted a decline in valuations for certain of its Handysize Product Carriers and determined that four such vessels (built between 2009 and 2011) having market valuations below their carrying values at December 31, 2014 should be tested for impairment. Based on tests performed, it was determined that the vessels will generate undiscounted cash flows in excess of their December 31, 2014 carrying values over the remainder of their useful lives. In developing estimates of future cash flows, the Company made assumptions about future performance, with significant assumptions being related to charter rates, ship operating expenses, utilization, drydocking requirements, residual value and the estimated remaining useful lives of the vessels. These assumptions are based on historical trends as well as future expectations. The estimated daily time charter equivalent rates used for unfixed days were based on a combination of (i) internally forecasted rates that are consistent with forecasts provided to the Company’s senior management and Board of Directors, and (ii) the trailing 12-year historical average rates, based on quarterly average rates published by a third party maritime research service. The internally forecasted rates are based on management’s evaluation of current economic data and trends in the shipping and oil and gas industries. Management chose to use the published 12-year historical average rates in its current year assumptions as opposed to the 10-year historical average rates that have been used in 2013 and 2012 because it is management’s belief that the 12-year period captures an even distribution of strong and weak charter rate periods which results in an average mid-cycle rate that is more in line with management’s forecast of a return to stronger charter rate levels in the medium term. Recognizing that the transportation of crude oil and petroleum products is cyclical and subject to significant volatility based on factors beyond the Company’s control, management believes the use of estimates based on the combination of internally forecasted rates and 12-year historical average rates calculated as of the reporting date to be reasonable.
Management also gave consideration as to whether other events or changes in circumstances had occurred since December 31, 2013 that could indicate that the carrying amounts of the remaining vessels in its International Flag fleet may not be recoverable as of December 31, 2014. Management concluded that no such events had occurred to warrant a change in the assumptions from those utilized in the December 31, 2013 test.
At December 31, 2013, Management determined that certain events had occurred during the fourth quarter of 2013 with respect to certain vessels within the Company’s International Flag fleet that Management viewed as impairment indicators, triggering the need for an impairment assessment as of December 31, 2013. Such events included (i) the Company’s intentions relative to two older, non-core Aframaxes employed in Lightering through 2013, specifically, management’s assessment of whether or not the Company would drydock and continue to trade such vessels, given the current and expected rate environment, (ii) a significant year-over-year decline in third party valuation appraisals of three Aframaxes that are not pledged as collateral under certain secured facilities and all nine older Panamaxes in the Company’s International Flag fleet and (iii) the inability to reach mutually agreeable terms on how the Company might refinance the pre-petition secured term loan facilities the Company had with certain banks in order to retain the five VLCCs, three Aframaxes, five MRs and two LR1s securing these loans after emergence from bankruptcy protection.
Accordingly, the Company performed impairment tests on 29 of its owned operating International Crude and Products vessels as of December 31, 2013, including five Product Carriers for which impairment charges were taken in 2012. In developing estimates of future cash flows, the Company made assumptions about future performance, with significant assumptions being related to charter rates, ship operating expenses, utilization, drydocking requirements, residual value and the estimated remaining useful lives of the vessels. These assumptions are based on historical trends as well as future expectations. Management prepared undiscounted cash flows weighted based on probabilities assigned to possible outcomes for the vessels, including a probability that all the vessels will continue to be held for use for the remainder of their useful lives and a probability that such vessels will be sold or transferred to the respective lenders at fair value during 2014. Specifically, in estimating future charter rates, management took into consideration rates currently in effect for existing time charters and estimated daily time charter equivalent rates for each vessel class for the unfixed days over the estimated remaining lives of each of the vessels. The estimated daily time charter equivalent rates used for unfixed days were based on a combination of (i) internally forecasted rates that are consistent with forecasts provided to the Company’s senior management and Board of Directors, and (ii) the trailing 10-year historical average rates, based on quarterly average rates published by a third party maritime research service. The internally forecasted rates were based on management’s evaluation of then current economic data and trends in the shipping and oil and gas industries. In addition, the Company took into consideration the potentially favorable impact of the Lender Plan Support Agreement which increased the probability that the fifteen vessels securing the pre-petition term loans would continue to be held for use as part of the International Flag fleet. In estimating the fair value of the vessels for the purposes of step 2 of the impairment tests, the Company utilized a market approach consisting of using an average of three third party appraisals net of a customary 2% broker commissions. Based on the tests performed, impairment charges totaling $365,976 were recorded on two VLCCs, two Aframaxes and two LR1s that were pledged as collateral under the term loans and nine Panamaxes to write-down their carrying values to their estimated fair values at December 31, 2013. Such impairment charges include $211,491 applicable to vessels that are pledged as collateral under the above referenced pre-petition secured term loans.
Management also gave consideration as to whether other events or changes in circumstances had occurred since December 31, 2012 that could indicate that the carrying amounts of the remaining vessels in its International Flag fleet may not be recoverable as of December 31, 2013. Management concluded that no such events had occurred to warrant a change in the assumptions from those utilized in the December 31, 2012 test.
In connection with the goodwill and intangible assets impairment tests performed as of December 31, 2013 (see Note 9, “Intangible Assets”), the Company also recorded a write down aggregating $462 on transportation equipment utilized in the full-service operations of the Company’s International Crude Lightering business.
At December 31, 2012, the Company gave consideration to events or changes in circumstances that could indicate that the carrying amounts of the vessels in the Company’s International Flag fleet may not be recoverable, including factors such as the impact of the Chapter 11 Cases, as well as the fact that average spot rates achieved in the Company’s International Flag segments continued to face downward pressure since the industry’s cyclical downturn that began in the fourth quarter of 2008. These factors combined with the likelihood that the current markets would continue in the near term, putting continued pressure on second hand tanker values, were indicators warranting impairment tests of the Company’s International Flag fleet as of December 31, 2012. Accordingly, the Company performed impairment tests on all of its owned operating and newbuild International Crude and Products vessels as of December 31, 2012. The forecasted rates used in the impairment test performed at December 31, 2012 were lower than those used during the prior quarters of 2012 as there was increasing evidence (as noted in forecasts published by analysts at the time) that the recovery in the Crude and Products markets would be both delayed and not as pronounced, thus delaying recovery to historical averages. The Company also took into consideration the Company’s long-term intentions relative to certain of its older or non-core vessels, including management’s assessment of whether the Company would drydock and continue to trade them given the then existing and expected weak rate environment. In developing estimates of future cash flows, the Company made assumptions about future performance, with significant assumptions being related to charter rates, ship operating expenses, utilization, drydocking requirements, residual value and the estimated remaining useful lives of the vessels. These assumptions were based on historical trends as well as future expectations. The basis for estimating daily time charter equivalent rates for fixed and unfixed days were consistent with those described above. In estimating the fair value of the vessels for the purposes of step 2 of the impairment tests, the Company utilized a market approach by using third party appraisals. Based on the tests performed, impairment charges totaling $278,345, including $608 recorded as a reduction in deferred drydock costs, were recorded on one ULCC, two VLCCs, two International Flag Aframaxes engaged in lightering in the U.S. Gulf and ten Handysize Product Carriers (including $94,288 applicable to five Handysize Product Carriers that are pledged as collateral under certain term loans the Company was party to at the time) to write-down their carrying values to their estimated fair values at December 31, 2012.
U.S. Flag fleet
The Company also considered the need to test its U.S. Flag fleet for impairment as of December 31, 2014, 2013 and 2012, but did not identify events or changes in circumstances that warranted impairment testing. Factors considered included the positive impact of the resolution of uncertainties concerning two ATB assets employed in the Delaware Bay Lightering business in the third quarter of 2012, the overall turnaround in the Company’s U.S. Flag business over the past four years and the lack of similar downward rate pressure as that seen in the international markets during the same period. Specifically, since 2012 spot rates have continued to increase due to increasing demand for Jones Act tankers and barges resulting from the emerging trade in U.S. Shale Oil. As a result, the Company’s U.S. Flag fleet ATB’s have been able to secure term charter business at rates that are sufficient to recover their carrying values. U.S. Flag market fundamentals are expected to remain strong during 2015 as there are currently no idle vessels in the marketplace.
In December 2012, the Company recognized an impairment charge of $1,037 to write-down the carrying value of a spare tug boat that had been idle since mid-2011 to its estimated sales price less costs to dispose. This tug boat was subsequently delivered to buyers in April 2013.
Vessel Deliveries
During the year ended December 31, 2014, the Company completed construction of an International Flag LR2, which is a coated Aframax. During the year ended December 31, 2013, the Company completed construction of an International Flag Aframax. During 2012, the Company completed construction of a VLCC and an International Flag Handysize Product Carrier.
Vessel Sales
For the year ended December 31, 2014, the Company recognized a gain on disposal of vessels of $10,532 including a gain of $10,325 relating to the sale of five International Flag Crude Tankers including two VLCCs, a Panamax and two Aframaxes which had been employed in Lightering operations. The Company recognized a gain on disposal of vessels of $1,167 for the year ended December 31, 2013 relating to the sale of vessel engine parts and the spare U.S. Flag tug boat referred to above. In the fourth quarter of 2012, the Company delivered its Car Carrier, the Overseas Joyce, to buyers and recognized a gain of approximately $8,078 on this sale.
Drydocking activity for the three years ended December 31, 2014 is summarized as follows:
For the year ended December 31,		2014		2013		2012
Balance at January 1		$	57,248	$	74,418	$	66,023
Payments for drydocking			37,817		22,024		45,990
Sub-total			95,065		96,442		112,013
Drydock amortization			-30,288		-32,648		-34,382
Amounts recognized upon sale/redelivery of vessels and non-cash adjustments			-2,364		-6,546		-2,605
Impairments			-		-		-608
Balance at December 31		$	62,413	$	57,248	$	74,418

EQUITY_METHOD_INVESTMENTS

EQUITY METHOD INVESTMENTS	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments and Joint Ventures Disclosure [Text Block]	NOTE 7 — EQUITY METHOD INVESTMENTS:
	Investments in affiliated companies include joint ventures accounted for using the equity method. As of December 31, 2014, the Company had an approximate 50% interest in two joint ventures. One joint venture operates four LNG Carriers. The other joint venture converted two ULCCs to Floating, Storage and Offloading Service Vessels. In addition, the Company has a 37.5% interest in Alaska Tanker Company, LLC, which manages vessels carrying Alaskan crude for BP.
	Floating Storage and Offloading Service (“FSO”) Vessels
	Maersk Oil Qatar AS (“MOQ”) awarded two service contracts to a joint venture between OSG and Euronav NV to provide to MOQ two vessels, the FSO Asia and the FSO Africa, to perform FSO services in the Al Shaheen field off shore Qatar after each vessel had been converted to an FSO. The Company has a 50% interest in this joint venture, held indirectly by OSG International, Inc. The joint venture financed the purchase of the vessels from each of Euronav NV and OSG and their conversion costs through partner loans and long-term bank financing, which was secured by, among other things, the service contracts and the FSOs themselves. Approximately $145,396 and $196,500 was outstanding under this secured facility as of December 31, 2014 and 2013, respectively, with the outstanding amount of this facility being subject to acceleration, in whole or in part, on termination of one or both of such service contracts. On August 29, 2013 the long-term bank financing agreement was amended and restated to, among other things, reschedule a $45,000 balloon payment due on August 30, 2013 to be paid in seven quarterly installments of $6,250, with the first installment due November 30, 2013, with a final payment of $1,250 due on August 31, 2015 and increase the margin on such debt by 50 basis points. In connection with the secured bank financing, the partners severally issued 50% guarantees. As of both December 31, 2014 and 2013, the carrying value of the Company’s guaranty, which is included in other liabilities in the accompanying balance sheet, was $0.
	On October 1, 2012, the FSO Africa commenced a new five-year FSO services contract with MOQ, replacing the existing service contract that was originally scheduled to expire in August 2013. The new service contract provides for an increase in the daily hire rate to the same daily hire rate schedule as for the existing service contract for the FSO Asia and grants MOQ the option to extend the contract for one or two additional years.
	The joint venture entered into floating-to-fixed interest rate swaps with major financial institutions all of which were being accounted for as cash flow hedges as of December 31, 2009. The interest rate swaps, covering notional amounts aggregating $254,308 and $304,472 at December 31, 2014 and 2013, respectively, pay fixed rates of 3.9% and receive floating rates based on LIBOR. These agreements have maturity dates ranging from July to September 2017. As a result of the delays in the completion of conversion and commencement of the service contract for the FSO Africa the Company concluded in the first quarter of 2010, that it was no longer probable that the forecasted transaction applicable to the FSO Africa swaps would occur. Accordingly, as a result of the de-designation of the FSO Africa swaps, amounts previously included in accumulated comprehensive loss and all subsequent changes in the market value of the swaps have been recognized in the joint venture’s statement of operations. The Company’s share of such (gains)/losses recognized in equity in income from affiliated companies for the years ended December 31, 2014, 2013 and 2012 were $470, $(280), and $2,216, respectively. As of December 31, 2014 and 2013, the joint venture had a liability of $13,665 and $22,083, respectively, for the fair value of the swaps associated with the FSO Africa and FSO Asia. The Company’s share of the effective portion of such amounts, aggregating $2,944 and $5,064 at December 31, 2014 and 2013, respectively, is included in accumulated other comprehensive loss in the accompanying consolidated balance sheet and is associated with the FSO Asia swaps only since the swaps associated with the FSO Africa were de-designated and deemed to be ineffective.
	LNG Joint Venture
	In November 2004, the Company formed a joint venture with Qatar Gas Transport Company Limited (Nakilat) (“QGTC”) whereby companies in which OSG holds a 49.9% interest ordered four 216,200 cbm LNG Carriers. Upon delivery in late 2007 and early 2008, these vessels commenced 25-year time charters to Qatar Liquefied Gas Company Limited (II) (“QG II”). QTGC subsequently contributed its ownership interests in the joint venture to its wholly owned subsidiary, Nakilat Marine Services Ltd. (“NMS”). The aggregate construction cost for such newbuildings was financed by the joint venture through long-term bank financing that is nonrecourse to the partners and partner contributions. Approximately $715,378 and $750,576 was outstanding under this secured facility as of December 31, 2014 and 2013. The joint venture has entered into floating-to-fixed interest rate swaps with a group of major financial institutions pursuant to which it pays fixed rates of approximately 4.9% and receives a floating rate based on LIBOR. The interest rate swaps agreements have maturity dates ranging from July to November 2022 and cover notional amounts aggregating $693,072 and $727,663 at December 31, 2014 and 2013, respectively. These swaps are being accounted for as cash flow hedges. As of December 31, 2014 and 2013, the joint venture recorded a liability of $116,819 and $108,725, respectively, for the fair value of these swaps. The Company’s share of the effective portion of the fair value of these swaps, $58,240 and $54,199 at December 31, 2014 and 2013, respectively, is included in accumulated other comprehensive loss in the accompanying consolidated balance sheets.
	In September 2012, the LNG joint venture entered into charter addendums to, among other things; increase the operating expense portion of the charter hire rates on the LNG Carriers retroactively from June 1, 2010. The Company’s share of the retroactive increases recognized in equity in income from affiliates for the year ended December 31, 2012 was $4,103.
	See Note 11, "Fair Value of Financial Instruments, Derivatives and Fair Value Disclosures," and Note 15, “Accumulated Other Comprehensive Loss,” for additional disclosures relating to the FSO and LNG joint venture interest rate swap agreements.
	Alaska Tanker Company
	In the first quarter of 1999, OSG, BP, and Keystone Shipping Company formed Alaska Tanker Company, LLC (“ATC”) to manage the vessels carrying Alaskan crude oil for BP. ATC provides marine transportation services in the environmentally sensitive Alaskan crude oil trade. Each member in ATC is entitled to receive its respective share of any incentive charter hire payable by BP to ATC.
	A condensed summary of the combined assets and liabilities of the equity method investments follows:
	As of December 31,	2014		2013
	Current assets	$	165,931	$	197,625
	Vessels, net		1,512,559		1,576,692
	Other assets		57,982		53,274
	Total assets	$	1,736,472	$	1,827,591
	Current liabilities	$	155,408	$	179,913
	Long-term debt and other non-current liabilities		1,415,798		1,548,484
	Equity		165,266		99,194
	Total liabilities and equity	$	1,736,472	$	1,827,591
	As of December 31, 2014 and 2013, the affiliated companies in which OSG held an equity interest had total bank debt outstanding of $860,774 and $947,076, respectively, of which $715,378 and $750,576, respectively, was nonrecourse to the Company. The Company’s percentage interest in the equity method investments with bank debt approximates 50%.
	A condensed summary of the results of operations of the equity method investments follows:
	For the year ended December 31,	2014		2013		2012
	Shipping revenues	$	383,424	$	384,040	$	368,802
	Ship operating expenses		-249,704		-248,924		-240,950
	Income from vessel operations		133,720		135,116		127,852
	Other expense		-1,735		-1,588		-1,419
	Interest expense		-51,024		-54,007		-65,936
	Net income	$	80,961	$	79,521	$	60,497

VARIABLE_INTEREST_ENTITIES_VIE

VARIABLE INTEREST ENTITIES ("VIEs")	12 Months Ended
	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entity Disclosure [Text Block]	NOTE 8 —VARIABLE INTEREST ENTITIES (“VIEs”):
	At December 31, 2014, the Company participates in six commercial pools and three joint ventures. Commercial pools operate a large number of vessels as an integrated transportation system, which offers customers greater flexibility and a higher level of service while achieving scheduling efficiencies. Participants in the commercial pools contribute one or more vessels and generally provide an initial contribution towards the working capital of the pool at the time they enter their vessels. The pools finance their operations primarily through the earnings that they generate.
	The Company enters into joint ventures to take advantage of commercial opportunities. The Company has entered into three joint ventures with different partners (see Note 7, “Equity Method Investments”). In each joint venture, the Company has the same relative rights and obligations and financial risks and rewards as its partners. The Company evaluated all nine arrangements to determine if they were variable interest entities (“VIEs”). The Company determined that two of the pools and one of the joint ventures met the criteria of a VIE and, therefore, the Company reviewed its participation in these VIEs to determine if it was the primary beneficiary of any of them.
	The Company reviewed the legal documents that govern the creation and management of the VIEs described above and also analyzed its involvement to determine if the Company was a primary beneficiary in any of these VIEs. A VIE for which the Company is determined to be the primary beneficiary is required to be consolidated in its financial statements.
	The formation agreements for each of the two commercial pools are similar and state that the board of each pool has decision making power over their significant decisions. In addition, all such decisions must be approved unanimously by the respective boards. Since the Company shares power to make all significant economic decisions that affect these pools and does not control a majority of either of the boards, the Company is not considered a primary beneficiary of either of the pools.
	The FSO joint venture described in Note 7, “Equity Method Investments,” was determined to be a VIE. The formation agreements of the joint venture state that all significant decisions must be approved by the majority of the board. As a result, the Company shares power to make all significant economic decisions that affect this joint venture and does not control a majority of the board and is not considered a primary beneficiary. Accordingly, the Company accounts for this investment under the equity method of accounting.
	The joint venture’s formation agreements require the Company and its joint venture partner to provide financial support as needed. The Company has provided and will continue to provide such support as described in Note 7, “Equity Method Investments.”
	The following table presents the carrying amounts of assets and liabilities in the balance sheet related to the VIEs described above as of December 31, 2014 and 2013:
	Consolidated Balance Sheet as of December 31,	2014		2013
	Investments in Affiliated Companies	$	276,856	$	275,261
	In accordance with accounting guidance, the Company evaluated its maximum exposure to loss related to these VIEs by assuming a complete loss of the Company’s investment in and advances to these VIEs and that it would incur an obligation to repay the full amount of the VIE’s outstanding secured debt and swap liabilities. The table below compares the Company’s liability in the consolidated balance sheet to the maximum exposure to loss at December 31, 2014.
		Consolidated Balance Sheet		Maximum Exposure to Loss
	Other Liabilities	$	-	$	356,400
	In addition, as of December 31, 2014, the Company had approximately $35,859 of trade receivables from pools that were determined to be VIEs. These trade receivables, which are included in voyage receivables in the accompanying consolidated balance sheet, have been excluded from the above tables and the calculation of OSG’s maximum exposure to loss. The Company does not record the maximum exposure to loss as a liability because it does not believe that such a loss is probable of occurring as of December 31, 2014. Further, the joint venture debt is secured by the joint venture’s FSOs. Therefore, the Company’s exposure to loss under its several guarantee would first be reduced by the fair value of such FSOs.

INTANGIBLE_ASSETS

INTANGIBLE ASSETS	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	NOTE 9 —INTANGIBLE ASSETS
	Intangible Assets
	Intangible assets activity for three years ended December 31, 2014 is summarized as follows:
		International
		Crude
		Tankers		U.S. Flag
		Segment		Segment		Other		Total
	Balance at January 1, 2012	$	7,625	$	69,277	$	256	$	77,158
	Amortization		-500		-4,667		-16		-5,183
	Balance at December 31, 2012		7,125		64,610		240		71,975
	Amortization		-500		-4,667		-16		-5,183
	Impairment loss		-6,625		-		-		-6,625
	Balance at December 31, 2013		-		59,943		224		60,167
	Amortization		-		-5,126		-224		-5,350
	Balance at December 31, 2014	$	-	$	54,817	$	-	$	54,817
	As discussed in Note 3, “Summary of Significant Accounting Policies,” the Company’s intangible assets consist primarily of long-term customer relationships acquired as part of the 2006 purchase of Maritrans, Inc. and the 2007 purchase of the Heidmar Lightering business. The Company’s re-organization planning discussed in Note 3 was determined to be an impairment triggering event under the ASC 360, Property, Plant, and Equipment, held-for-use model for the long-lived asset group relating to the Company’s full service International Crude Tankers Lightering business as of December 31, 2013. The full service International Crude Tankers Lightering business assets were tested as a group because the cash flows relating to this business are largely independent of the cash flows of other groups of assets and liabilities. The assets of the full service International Crude Tankers Lightering business include the customer relationship intangible assets, an Aframax vessel (the Overseas Eliane) and transportation equipment used to service the customers in the full service Lightering business. As such, the carrying values and cash flows that were included in the impairment test are solely the assets and cash flows related to the full service Lightering business. Based on the estimated cash flows used to measure the fair value of the asset group, the Company recorded an impairment charge of $6,625 representing the full value of the customer relationships intangible assets related to the full service International Crude Tankers Lightering business in the quarter ended December 31, 2013. Refer to Note 6, “Vessels, Deferred Drydock and Other Property,” for a discussion on the impairment charges allocated to the transportation equipment used in this business.
	The gross intangible assets were $92,000 and $93,331 at December 31, 2014 and 2013, respectively. Accumulated amortization was $37,183 and $33,164 at December 31, 2014 and 2013, respectively. Amortization of intangible assets for the five years subsequent to December 31, 2014 is expected to approximate $4,600 per year.

DEBT

DEBT	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	NOTE 10 —DEBT:
	Debt consists of the following:
	As of  December 31,		2014(1)			2013 (2)
	OBS term loan, net of unamortized discount of $1,480		$	598,505		$	-
	OIN term loan, net of unamortized discount of $1,071			624,162			-
	8.125% notes due 2018, net of unamortized discount of $2,898 (2013)			300,000			297,102
	7.50% notes due 2024			784			146,000
	7.50% Election 1 notes due 2021			6,508			-
	7.50% Election 2 notes due 2021			138,708			-
	Unsecured revolving credit facility			-			1,489,000
	8.75% Debentures due 2013, net of unamortized discount of $11 (2013)			-			63,592
	Floating rate secured term loans, due 2016 through 2023			-			565,956
	Total debt			1,668,667			2,561,650
	Less current portion			12,314			-
	Long-term portion		$	1,656,353		$	2,561,650
	-1	The weighted average effective interest rate for debt outstanding as of December 31, 2014 was 6.21%.
	-2	Classified as liabilities subject to compromise as of December 31, 2013.
	Exit Financing Facilities
	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. As discussed in Note 2, “Chapter 11 Filing and Emergence from Bankruptcy,” the Exit Financing Facilities include (i) the OBS ABL Facility - a secured asset-based revolving loan facility of $75,000, (ii) the OBS Term Loan - a secured term loan of $603,000, and (iii) the OIN Term Loan and OIN Revolver Facility - a secured term loan facility of $628,375 and a revolving loan facility of $50,000. On August 5, 2014, the available amounts under each of the OBS Term Loan and OIN Term Loan were drawn in full. As of December 31, 2014, no amounts had been drawn under the OBS ABL Facility or the OIN Revolver Facility.
	The OBS Term Loan provides that OBS may request an increase of the term loan commitment by an amount which may not exceed the greater of (i) $75,000 and (ii) an additional amount, if, after giving effect to the increase of such additional amount on a Pro Forma Basis, OBS is in compliance with a stated ratio for the Test Period most recently ended for which financial statements have been delivered to the Administrative Agent, provided that, among other terms and conditions, (a) no Default shall have occurred and be continuing or would occur after giving effect to such commitment increase and (b) immediately after giving effect to such increase, OBS shall be in compliance with the Loan to Value Test. However, no individual Lender is obligated to increase the amount of their loan commitment thereunder.
	The OBS ABL Facility provides that OBS may request an increase of the revolving term loan commitments by up to $25,000, provided that among other terms and conditions, (a) no Default shall have occurred and be continuing or would occur after giving effect to such commitment increase and (b) immediately before and after giving effect to such increase, Suppressed Availability may not be less than $10,000. However, no individual Lender is obligated to increase the amount of their loan commitment thereunder.
	The OIN Term Loan and OIN Revolver Facility (collectively, the “OIN Facilities”) provides that the borrowers thereunder may request an increase of the term loan and revolving loan commitments by an amount which may not exceed, collectively, the greater of (i) $75,000 and an additional amount, if, after giving effect to the increase of such additional amount, on a Pro Forma Basis, OIN is in compliance with a stated ratio for the Test Period most recently ended for which financial statements have been delivered to the Administrative Agent, provided that among other terms and conditions, (a) no Default shall have occurred and be continuing or would occur after giving effect to such commitment increase and (b) immediately after giving effect to such increase, OIN shall be in compliance with the Loan to Value Test. However, no Lender is obligated to increase the amount of their loan commitment thereunder, and the borrowers thereunder may not obtain more than a $25,000 increase in the revolving loan commitments.
	Interest on the Exit Facilities is calculated, at the Company’s option, based upon (i) an alternate base rate (“ABR”) plus the applicable margin or (ii) Adjusted LIBOR plus the applicable margin. ABR is defined as the highest of (i) the Base Rate (i.e., the prime rate published in The Wall Street Journal), (ii) the Federal Funds Effective Rate plus 0.50%, (iii) the one-month Adjusted LIBOR Rate plus 1.00% and (iv) in the case of the OBS Term Loan, the OIN Term Loan and the OIN Revolver Facility, 2.00% per annum. The OBS ABL Facility applicable margin varies based upon undrawn availability under the commitment and is subject to certain pricing adjustments. The OBS ABL Facility provides for quarterly payment of commitment fees at a rate of 0.50% for each quarter during which the daily average Total Revolving Exposure is less than 50% of Total Revolving Commitments or 0.375% for each quarter during which the daily average the Total Resolving Exposure is greater than or equal to 50% of Total Revolving Commitments. The OIN Revolver Facility provides for quarterly payment of commitment fees at a rate of 0.50% of the average daily unused amount of each lenders Revolving Commitments.
	The applicable margins and floor interest rates for each Exit Financing Facility is as follows:
	Flag		US Flag											International Flag
	Facility		OBS					OBS						OIN						OIN
			ABL Facility					Term Loan						Term Loan						Revolver Facility
	Rate		ABR		LIBOR			ABR			LIBOR			ABR			LIBOR			ABR			LIBOR
	Floor		None		None				2	%		1	%		2	%		1	%		2	%		1	%
	Applicable Margin		1.25%-1.75%		2.25%-2.75%				3.25	%		4.25	%		3.75	%		4.75	%		3.5	%		4.5	%
	During the year ended December 31, 2014, the Company paid issuance and deferred financing fees aggregating $2,748 and $51,963, respectively, for the Exit Financing Facilities. Issuance costs incurred by the Exit Facilities lenders (“Exit Facilities Lenders”), or on behalf of the Exit Facilities Lenders, have been treated as a reduction of the debt proceeds. (See Note 3, “Significant Accounting Policies” for additional information relating to deferred financing charges).
	Interest expense, including amortization of issuance and deferred financing costs, for the year ended December 31, 2014 was $32,367 for the Exit Financing Facilities comprised of $15,282 relating to the OBS Term loan and OBS ABL Facility and $17,085 relating to the OIN Term Loan and OIN Revolver Facility. Interest paid for the year ended December 31, 2014 was $8,094 and $9,239 for the OBS Term Loan and the OIN Term Loan, respectively.
	The OBS Term Loan and the OIN Term Loan amortize in equal quarterly installments in aggregate annual amounts equal to 1% of the original principal amount of the loans. Each of the Exit Financing Facilities stipulates if annual aggregate cash proceeds of asset sales exceed $5,000, cash proceeds from each such sale are required to be reinvested in fixed or capital assets within twelve months of such sale or be used to prepay the principal balance outstanding of the Exit Financing Facilities. See Note 3, “Significant Accounting Policies,” for additional information relating to restricted cash as of December 31, 2014. Beginning with the annual period commencing January 1, 2015, the OBS Term Loan and the OIN Term Loan are subject to additional mandatory annual prepayments in an aggregate principal amount of up to 50% of Excess Cash Flow.
	The OBS Term Loan and the OIN Term Loan mature on August 5, 2019 and the OBS ABL Facility and the OIN Revolver Facility mature on February 5, 2019. The maturity dates for the Exit Financing Facilities are subject to acceleration upon the occurrence of certain events, including a change in control event or other events of default as defined in the respective loan agreements.
	The OIN Revolver Facility has a covenant to maintain the aggregate Fair Market Value of the Collateral Vessels at greater than or equal to $500,000 at the end of each fiscal quarter. The Company was in compliance with this covenant at December 31, 2014. None of the other Exit Financing Facilities have financial covenants. Each Exit Financing Facility contains certain restrictions relating to new borrowings, and the movement of funds between the borrowers and OSG, who is not a borrower under the Exit Financing Facilities, as set forth in the respective loan agreements. Furthermore, drawdowns under the OBS ABL Facility are subject to certain limitations based upon the available borrowing base, as defined in the OBS ABL loan agreement.
	Unsecured Revolving Credit Facility
	In 2006, the Company entered into a $1,800,000 seven year unsecured revolving credit agreement with a group of banks. Borrowings outstanding under this credit facility were $1,489,000 as of December 31, 2013 and immediately prior to emergence. The Company repaid the principal outstanding and contractual interest thereon (which includes default interest) on the Effective Date.
	Unsecured Senior Notes
	8.75% Debentures (the “2013 Debentures”) – These notes were issued on December 1, 1993 and the remaining balance consisted of $63,603 in face value, which matured on December 1, 2013. Borrowings outstanding under this credit facility and contractual interest thereon was paid on the Effective Date.
	The Company has the following separate series of unsecured notes issued and outstanding as of December 31, 2014.
	8.125% Notes (the “8.125% Notes”) – These notes were issued on March 29, 2010 and consist of $300,000 in face value, which are due on March 30, 2018. As of the Effective Date, the 8.125% Notes were reinstated and contractual interest through the last missed coupon date was paid. The 8.125% Notes (i) are the Company’s general, unsecured obligations and rank equally and ratably in right of payment with its existing and future unsecured senior indebtedness; (ii) may not be redeemed prior to their respective maturity dates; (iii) are subject to repurchase upon certain changes of ownership or control (as further described below); (iv) are subject to certain covenants and limitations, including that the Company may not, directly or indirectly, Incur, as such term (and all capitalized terms hereafter in this paragraph) are defined within the applicable indenture, assume or suffer to exist any Mortgage on or with respect to any property or assets, now owned or hereafter acquired, to secure any present or future Designated Debt without making effective provision for securing the notes in certain circumstances; and (v) restrict the Company’s ability to merge or consolidate with another person. Upon a “Change of Control Triggering Event,” which requires both a ‘‘Change of Control’’ and a ‘‘Rating Decline,” as such terms are defined within the 8.125% Notes indenture, we would be obligated to make an offer to purchase all outstanding 8.125% Notes at a redemption price of 101% of the principal amount thereof plus accrued and unpaid interest thereon to the date of purchase. Additionally, upon certain Events of Default, the Trustee or the Holders of not less than 25% in aggregate principal amount of the outstanding 8.125% Notes may declare the entire unpaid principal of and accrued interest on the 8.125% Notes to be due and payable immediately.
	7.5% Notes (the “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. The Equity Plan provided for either a reinstatement of the 7.5% Notes and a cash payment equal to unpaid and overdue interest or an alternative distribution of new notes and cash payments as discussed in Note 2,”Chapter 11 Filing and Emergence from Bankruptcy.”
	The Election 1 Notes have substantially the same terms as the 2024 Notes, other than the maturity date. The Election 2 Notes have substantially the same terms as the 2024 Notes, other than the (i) the 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. Under the Third Supplemental indenture, such right is triggered only upon the occurrence of both, a Change of Control and a Rating Decline (each as defined in the Third Supplemental Indenture). Both the Election 1 Notes and the Election 2 Notes (i) will accrue interest at the rate of 7.50% per annum from August 5, 2014, payable on February 15 and August 15 of each year, beginning on February 15, 2015, to holders of record on the immediately preceding February 1 and August 1; (ii) are the Company’s general, unsecured obligations and rank equally and ratably in right of payment with its existing and future unsecured senior indebtedness; (iii) may not be redeemed prior to their respective maturity dates; (iv) are subject to repurchase upon certain changes of ownership or control (the provisions of which, as noted above, are different between the two series of notes); (v) are subject to certain covenants and limitations, including that the Company may not, directly or indirectly, Incur as such term (and all capitalized terms hereafter in this paragraph) are defined within the applicable indenture, assume or suffer to exist any Mortgage on or with respect to any property or assets, now owned or hereafter acquired, to secure any present or future Designated Debt without making effective provision for securing the notes in certain circumstances; and (vi) restrict the Company’s ability to merge or consolidate with another person.
	The following table summarizes contractual interest expense (including default interest, as applicable) and reorganization items relating to default interest and changes in estimates of allowed claims relating to the Unsecured Revolving Credit Facility and the Unsecured Senior Notes, as applicable, pursuant to the Equity Plan recognized during the year ended December 31, 2014. The table also summarizes total contractual interest paid for those periods:
			For the year ended
			December 31, 2014
			Unsecured			Unsecured
			Revolving			Senior
			Credit Facility			Notes
	Contractual Interest (including default interest)		$	78,625		$	92,220
	Reorganization expense			-			14,181
			$	78,625		$	106,401
	For the year ended December 31, 2013 no interest expense was recorded relating to the Unsecured Revolving Credit Facility and the Unsecured Senior Notes.
			For the year ended
			December 31, 2012
			Unsecured			Unsecured
			Revolving			Senior
			Credit Facility			Notes
	Contractual Interest		$	13,218		$	36,825
	Secured Term Loan Facilities
	The pre-reorganized OSG loan facilities included floating rate (based on LIBOR) secured terms loans with Danish Ship Finance (“DSF”) and the Export-Import Bank of China (“CEXIM”), with principal outstanding as of the Petition Date aggregating $266,936 and $311,751, respectively. These facilities provided that the market values of the vessels pledged as collateral be compared with the outstanding loan balance semi-annually. The Company believed that the value of the collateral securing these loans as of the Petition Date was less than the outstanding balance of such loans and therefore classified these secured term loans and related accrued interest as liabilities subject to compromise in the consolidated balance sheet at December 31, 2013. As of December 31, 2013, the loan-to-value ratios were estimated to approximate 97% and 91%, respectively. Pursuant to the Bankruptcy Court orders [D.I. 0459 and 0460] issued on February 5, 2013, the Company made Adequate Protection Interest payments to CEXIM and DSF during the post-petition period in consideration for the lenders not repossessing the secured vessels. In accordance with ASC 852, no interest is accrued and/or paid on secured debt when the fair value of the underlying collateral is below the outstanding principal of the secured debt. Accordingly, the Adequate Protection Interest Payments had been classified as reductions of outstanding principal through the quarter ended March 31, 2014. Pursuant to the Equity Plan that provided for payment in full of principal outstanding under the Secured Loan Facilities as of the Petition Date, Adequate Protection Interest Payments made during the period from April 1, 2014 to December 31, 2014 are reflected as a component of operating activities in the consolidated statement of cash flows for the year ended December 31, 2014. For the year ended December 31, 2014 and December 31, 2013, the Company made Adequate Protection Interest Payments relating to the DSF and CEXIM secured term loans aggregating $9,466 and $12,731, respectively. The principal outstanding and unpaid accrued interest for the DSF and CEXIM secured term loans were repaid on the Effective Date.
	For the years ended December 31, 2014, 2013 and 2012 the Company recorded charges of $5,545, $0 and $3,316 respectively, relating to the DSF secured term loans. The charge for the year ended December 31, 2014 reflects interest expense relating to a) $4,662 of Adequate Protection Interest Payments, which had previously been classified as reductions of outstanding principal and b) $882 of post-petition interest for the period from the Company’s last Adequate Protection Interest Payment dates through August 5, 2014 at the contractual interest rate. For the year ended December 31, 2014, the Company also recorded charges of $4,627 to reorganization items relating to a settlement of disputed default interest for the period from November 14, 2012 through August 5, 2014.
	For secured term loans with CEXIM, for the years ended December 31, 2014, 2013 and 2012 the Company recorded charges of $14,915, $0 and $8,588, respectively. The charge for the year ended December 31, 2014 reflects interest expense relating to a) $10,452 of Adequate Protection Interest Payments, which had previously been classified as reductions of outstanding principal and b) $4,462 of post-petition interest for the period from the Company’s last Adequate Protection Interest Payment date through August 5, 2014 at the contractual interest rate. For the year ended December 31, 2014, the Company also recorded charges of $5,456 to reorganization items for a settlement of disputed default interest for the period from November 14, 2012 through August 5, 2014.
	Letters of Credit
The letter of credit of $9,146 issued in connection with certain arbitration proceedings the Company was involved in had been fully cash collateralized. Such cash collateral was considered restricted cash and was included in other assets in the consolidated balance sheet as of December 31, 2013. Upon settlement of the arbitration proceedings in the fourth quarter of 2014, the letter of credit was terminated and the previously restricted cash was reclassified to cash and cash equivalents.
The aggregate annual principal payments required to be made on debt are as follows:
As of December 31, 2014
2015		$	12,314
2016			12,314
2017			12,314
2018			312,314
2019			1,175,963
Thereafter			146,000
		$	1,671,219
Interest paid, excluding capitalized interest, amounted to $209,716 in 2014, $0 in 2013 and $75,278 in 2012.

FAIR_VALUE_OF_FINANCIAL_INSTRU

FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	NOTE 11 — FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES:
	The following methods and assumptions were used to estimate the fair value of each class of financial instrument.
	Cash and cash equivalents—The carrying amounts reported in the consolidated balance sheets for interest-bearing deposits approximate their fair value.
	Debt—The fair values of the Company’s publicly traded and non-public debt at December 31, 2014 are estimated based on quoted market prices. At December 31, 2013, all of the Company’s debt was subject to compromise (see Note 10, “Debt”) as a result of the Company’s filing of the Chapter 11 Cases.
	Forward freight agreements and bunker swaps—The fair values of Forward Freight Agreements (“FFAs”) and bunker swaps are the estimated amounts that the Company would receive or pay to terminate the agreements at the reporting date, which include an adjustment for the counterparty or the Company’s credit risk, as appropriate, after taking into consideration any underlying collateral securing the agreements.
	Interest rate swaps and caps—The fair values of interest rate swaps and caps are the estimated amounts that the Company would receive or pay to terminate the swaps or caps at the reporting date, which include adjustments for the counterparty or the Company’s credit risk, as appropriate, after taking into consideration any underlying collateral securing the swap or cap agreements.
	ASC 820, Fair Value Measurements and Disclosures, relating to fair value measurements, defines fair value and established a framework for measuring fair value. The ASC 820 fair value hierarchy distinguishes between market participant assumptions developed based on market data obtained from sources independent of the reporting entity and the reporting entity's own assumptions about market participant assumptions developed based on the best information available in the circumstances. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, essentially an exit price. In addition, the fair value of assets and liabilities should include consideration of non-performance risk, which for the liabilities described below includes the Company's own credit risk.
	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—Inputs that are unobservable (for example cash flow modeling inputs based on assumptions)
	The estimated fair values of the Company’s financial instruments, other than derivatives that are not measured at fair value on a recurring basis, categorized based upon the fair value hierarchy, at December 31, 2014 and 2013, are as follows:
			Fair Value			Level 1			Level 2
	December 31, 2014:
	Cash (1)		$	512,404		$	512,404		$	-
	8.125% notes due 2018			-294,300			-			-294,300
	7.5% notes due 2024			-626			-			-626
	7.5% Election 1 notes due 2021			-5,511			-			-5,511
	7.5% Election 2 notes due 2021			-131,773			-			-131,773
	OBS Term loan			-589,863			-			-589,863
	OIN Term loan			-618,981			-			-618,981
	December 31, 2013:
	Cash and cash equivalents		$	601,927		$	601,927		$	-
	Unsecured Senior Notes		$	-559,441		$	-		$	-559,441
	(1) Includes restricted cash of $123,178.
	The Company’s debt was included in liabilities subject to compromise as of December 31, 2013. Having filed the Chapter 11 Cases, the Company would not have been able to enter into credit facilities similar to its Unsecured Revolving Credit Facility and the floating rate Secured Term Loans. It was impractical to therefore obtain fair value estimates for such floating rate debt as of December 31, 2013 and such debt is excluded from the above table. The fair values of the Unsecured Senior Notes were derived from quoted market prices, but because the Unsecured Senior Notes are thinly traded in 2014 and 2013, the fair value estimates are considered to be Level 2 of the fair value hierarchy.
	Derivatives
	The Company is exposed to certain risks relating to its ongoing business operations. The risks, managed by using derivative instruments, are volatility with respect to spot (voyage) charter rates, fuel prices, interest rates and foreign currency exchange rates.
	Spot Market Rate Volatility Risk
	The Company entered into FFAs and bunker swaps with an objective to utilize them as (i) economic hedging instruments some of which qualified as cash flow hedges for accounting purposes that reduced its exposure to changes in TCE revenue earned by some of its vessels operating in the spot market; and (ii) from time to time for trading purposes to take advantage of short term fluctuations in the market. The FFAs and bunker swaps involved contracts to provide a fixed number of theoretical voyages at fixed rates, which generally ranged from one month to one year and settled monthly based on a published index. There were no contracts outstanding as of December 31, 2014 and 2013.
	Fuel Price Volatility Risk
	The Company entered into stand-alone bunker swaps to protect the Company against future increases in fuel prices in the normal course of its International Crude Tankers Lightering business, which includes a number of fixed rate Contracts of Affreightment. These swap contracts, which did not qualify as cash flow hedges for accounting purposes, settled on a net basis at the end of each calendar month, based on the average daily closing prices, as quoted by the Baltic Exchange, of the commodity during each month. The Company closed its trading account and settled all open positions prior to the Petition Date. Accordingly, there were no bunker swap agreements outstanding as of December 31, 2014 and 2013.
	Interest Rate Risk
	The Company uses interest rate caps and swaps for the management of interest rate risk exposure. The interest rate swaps effectively convert a portion of the Company’s debt from a floating to a fixed rate and were designated and qualified as cash flow hedges. At December 31, 2014, OBS and OIN were party to two separate interest rate cap agreements (“Interest Rate Cap”) each with a forward start date of February 15, 2015 with major financial institutions covering notional amounts of $375,000 and $400,000, respectively, to limit the floating interest rate exposure associated with their respective term loans. These agreements contain no leverage features. The OBS Interest Rate Cap has a Cap Rate of 2.5% through February 5, 2017, at which time the Cap Rate increases to 3.0% through the termination date of February 5, 2018.  The OIN Interest Rate Cap has a Cap Rate of 2.5% through the termination date of February 5, 2017.
	At the Petition Date, the Company was a party to seven floating-to-fixed interest rate swaps with various major financial institutions covering notional amounts aggregating approximately $219,940, pursuant to which it paid fixed rates ranging from 3.3% to 4.7% and received floating rates based on LIBOR. These agreements contained no leverage features and had various final maturity dates ranging from December 2012 to August 2014. Two of the floating-to-fixed interest rate swap agreements with an aggregate notional value of $30,000 that were scheduled to mature in December 2012 were de-designated in September 2012. The related balances in accumulated other comprehensive loss aggregating $331 were reclassified into earnings during the quarter ended September 30, 2012.
	The filing of the Chapter 11 Cases (see Note 2, “Chapter 11 Filing and Emergence from Bankruptcy”) constituted an event of default or termination under the seven interest rate swap agreements to which the Company was a party as of the Petition Date. Accordingly, on November 14, 2012, outstanding interest rate swap obligations (including accrued interest) totaling $3,566 were reclassified to liabilities subject to compromise on the consolidated balance sheet and the Company de-designated all of its interest rate swaps, other than those entered into by the joint ventures in which it participates, from hedge accounting. The related balances in accumulated other comprehensive loss aggregating $1,866 were reclassified into earnings as of the Petition Date. The outstanding interest rate swap obligations as of the Petition Date represented general unsecured claims against the Company which were settled at Emergence or shortly thereafter.
	Tabular disclosure of derivatives location
	Derivatives are recorded in the December 31, 2014 balance sheet on a net basis by counterparty when a legal right of offset exists. The following table presents information with respect to the fair values of derivatives reflected in the December 31, 2014 balance sheet on a gross basis by transaction. As noted above, as a result of the Chapter 11 Cases, all derivative obligations outstanding as of the Petition Date were reclassified to liabilities subject to compromise as they represented general unsecured claims against the Company and are excluded from the balance sheet presentation below.
	Fair Values of Derivative Instruments:
			Asset Derivatives						Liability Derivatives
			Balance Sheet						Balance Sheet
	December 31, 2014		Location			Amount			Location			Amount
	Derivatives designated as hedging instruments:
	Interest rate caps:
	Long-term portion			Other assets		$	2,115			Other liabilities		$	-
	Total derivatives designated as hedging instruments						2,115						-
	Total derivatives not designated as hedging instruments						-						-
	Total derivatives					$	2,115					$	-
	The following tables present information with respect to gains and losses on derivative positions reflected in the consolidated statements of operations or in the consolidated statements of other comprehensive loss.
	The effect of cash flow hedging relationships recognized in other comprehensive income/(loss) excluding amounts reclassified from accumulated other comprehensive income (effective portion), including hedges of equity method investees, for the years ended December 31, 2014, 2013 and 2012 follows:
	For the year ended December 31,		2014			2013			2012
	Interest rate swaps		$	-21,372		$	19,114		$	-20,709
	Interest rate caps			-478			-			-
	Total		$	-21,850		$	19,114		$	-20,709
	The effect of cash flow hedging relationships on the consolidated statements of operations is presented excluding hedges of equity method investees. The Company’s interest rate cap agreements had no effect on the consolidated statement of operations for the year ended December 31, 2014. The effect of the Company’s cash flow hedging relationships on the consolidated statement of operations for the year ended 2012 is shown below:
			Statement of Operations
			Effective Portion of Gain/(Loss)
			Reclassified from
			Accumulated Other Comprehensive
			Loss					Ineffective Portion
	For the year ended				Amount of					Amount of
	31-Dec-12		Location		Gain/(Loss)			Location		Gain/(Loss)
	Interest rate swaps		Interest expense		$	-7,697		Interest expense		$	-
	Total				$	-7,697				$	-
The effect of the gain/(loss) recognized on derivatives not designated as hedging instruments on the consolidated statements of operations, excluding hedges of equity method investees, for the years ended December 31, 2014, 2013 and 2012 are as follows:
For the year ended December 31,				2014			2013			2012
		Location
FFAs and bunker swaps		Other income/(expense)		$	-		$	-		$	1,376
Total				$	-		$	-		$	1,376
See Note 7, “Equity Method Investments,” for additional information relating to derivatives held by the Company’s equity method investees and Note 15, “Accumulated Other Comprehensive Loss,” for disclosures relating to the impact of derivative instruments on accumulated other comprehensive loss.
Fair Value Hierarchy
The following tables present the fair values, which are pre-tax, for assets and liabilities measured on a recurring basis (excluding investments in affiliated companies):
		Fair Value			Level 1			Level 2
Assets/(Liabilities) at December 31, 2014:
Derivative Assets (interest rate caps)		$	2,115		$	-		$	2,115	-1
-1	For interest rate caps, fair values are derived using valuation models that utilize the income valuation approach. These valuation models take into account contract terms such as maturity, as well as other inputs such as interest rate yield curves and creditworthiness of the counterparty and the Company.
The following table summarizes the fair values of items measured at fair value on a nonrecurring basis for the year ended December 31, 2013 (there were none for 2014):
											Total
											Impairment
Description		Fair Value			Level 2			Level 3			Charges
Assets for the year ended December 31, 2013:
International Crude Tankers impairment
Vessels held for use(1)		$	359,252		$	359,252		$	-		$	-327,675
Other fixed assets held for use(2)		$	750		$	-		$	750		$	-462
Intangible assets (2)		$	-		$	-		$	-		$	-6,625
Goodwill(3)		$	-		$	-		$	-		$	-9,589
International Product Carriers impairment
Vessels held for use(1)		$	67,947		$	67,947		$	-		$	-38,301
	-1	Aggregate pre-tax impairment charges of $365,976 were recorded in the fourth quarter of 2013, related to 15 vessels held for use in the International Crude Tanker and International Product Carriers segments. The fair value measurement used to determine the impairment for the vessels held for use was based upon a market approach, which utilized the expected sales prices of the vessels obtained from third party appraisals. Because sales of vessels occur somewhat infrequently, the expected sales prices are considered to be Level 2.
	-2	Aggregate pre-tax impairment charges of $7,087 were recorded in the fourth quarter of 2013, including $6,625 related to customer relationship intangible assets and $462 related to transportation equipment held for use in the International Crude Tanker's Lightering business. The fair value measurement used to determine the impairment for the intangible assets and equipment held for use was based upon the income approach, which utilized cash flow projections consistent with the most recent projections of the Company, and a discount rate equivalent to a market participant's weighted average cost of capital. Because the Company uses its own cash flow projections, the cash flow projections are considered to be Level 3.
	-3	Aggregate pre-tax impairment charges of $9,589 were recorded in the fourth quarter of 2013, related to goodwill of the International Crude Tanker's Lightering business. The fair value measurement used to determine the impairment for goodwill was based upon the income approach, which utilized cash flow projections consistent with the most recent projections of the Company, and a discount rate equivalent to a market participant's weighted average cost of capital. Because the Company uses its own cash flow projections, the cash flow projections are considered to be Level 3.

ACCOUNTS_PAYABLE_ACCRUED_EXPEN

ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	12 Months Ended
	Dec. 31, 2014
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]	NOTE 12 — ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES:
	Accounts payable, accrued expenses and other current liabilities follows:
	At December 31,	2014		2013
	Accounts payable	$	4,422	$	22,002
	Payroll and benefits		19,060		30,589
	Interest		21,218		-
	Due to owners on chartered in vessels		3,776		3,452
	Accrued drydock and repair costs		1,983		4,335
	Bunkers and lubricants		1,626		7,907
	Charter revenues received in advance		15,693		18,682
	Insurance		920		573
	Accrued vessel expenses		4,233		7,529
	Bankruptcy claims accruals		13,506		-
	Accrued general and administrative expenses		6,895		16,380
	Other		2,734		10,133
		$	96,066	$	121,582

TAXES

TAXES	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	NOTE 13 —TAXES:
	Income of foreign shipping companies earned before 1976 is not subject to U.S. income taxation unless distributed. From January 1, 1976 through December 31, 1986, foreign shipping income was excluded from U.S. income taxation to the extent that such income was reinvested in foreign shipping operations. A determination of the amount of qualified investments in foreign shipping operations, as defined, is made at the end of each year and such amount is compared with the corresponding amount at December 31, 1986. The Company’s qualified investments continue to exceed the base amount. From January 1, 1987 through December 31, 2004, earnings of foreign shipping companies (exclusive of foreign joint ventures in which the Company has a less than 50% interest) were subject to U.S. income taxation in the year earned and could therefore be distributed to the U.S. without further tax. For years beginning after December 31, 2004, the earnings from shipping operations of the Company’s foreign subsidiaries are not subject to U.S. income taxation as long as such earnings are not deemed repatriated to the U.S.
	The components of loss before income taxes follow:
	For the year ended December 31,	2014			2013			2012
	Foreign	$	455,565		$	-662,480		$	-484,306
	Domestic		-722,646			9,505			2,711
		$	-267,081		$	-652,975		$	-481,595
	In connection with the 2014 income and loss reported above, the Company treated certain payments made by OSG in connection with the Company’s emergence from bankruptcy in August 2014 in the amount of $477,835 as having been made in its capacity as guarantor of the obligation of subsidiaries of OIN, a wholly owned subsidiary of the Company incorporated in the Marshall Islands, arising under certain loan agreements. In connection with these payments, the Company has included these amounts in the loss reported above for domestic income/(loss). As OIN and its subsidiaries were relieved of their obligations to satisfy the amounts paid by OSG, cancellation of indebtedness income was reflected in an amount equal to the OSG payment and has been included in the foreign income/(loss) reported in the components of loss before income taxes in the table above.
	The foreign income/(loss) reflected in the table above is primarily attributable to operations of companies domiciled in the Marshall Islands, which are not subject to income tax.
	The components of the income tax (provisions)/benefits follow:
	For the year ended December 31,	2014			2013			2012
	Current	$	32,376		$	7,347		$	-28,270
	Deferred		82,432			7,398			29,751
		$	114,808		$	14,745		$	1,481
	The income tax (provision)/benefits are primarily attributable to U.S. federal and state income tax.
	The significant components of the Company’s deferred tax liabilities and assets follow:
	As of December 31,	2014			2013
	Deferred tax liabilities:
	Vessels and other property	$	289,229		$	290,620
	Unremitted earnings of foreign subsidiaries		-			55,602
	Prepaid expenditures		15,816			12,010
	Post-petition interest expense		-			35,368
	Other—net		9,635			9,966
	Total deferred tax liabilities		314,680			403,566
	Deferred tax assets:
	Loss carryforwards		26,419			17,052
	Employee compensation and benefit plans		14,263			32,403
	Financing and professional fees		4,386			832
	Accrued expenses and other		5,185			2,266
	Total deferred tax assets		50,253			52,553
	Valuation allowance		13,538			13,477
	Net deferred tax assets		36,715			39,076
	Net deferred tax liabilities	$	277,965		$	364,490
	These amounts are classified in the balance sheet as follows:
	Current deferred tax assets	$	-5,312		$	-5,464
	Noncurrent deferred tax liabilities		283,277			369,954
	Net deferred tax liabilities	$	277,965		$	364,490
	Certain prior year amounts have been reclassified to conform with current year classifications.
	During the year ended December 31, 2014, the Company repaid the $1,500,000 Unsecured Revolving Credit Facility, for which OIN was liable on a joint and several basis. As a result, the Company released its deferred tax liability for undistributed earnings of its foreign subsidiaries attributable to the excess of the $1,500,000 facility limit over the cumulative potential deemed dividends arising from drawdowns by OSG under such facility and recorded an income tax benefit of $55,602. As of December 31, 2014, the Company’s tax basis in its investment in OIN exceeds its book basis and no deferred tax asset has been recorded.
	As of December 31, 2014, the Company had U.S. federal net operating loss carryforwards of $438,363 which are available to reduce future taxes, if any. The federal net operating loss carryforwards expire in 2034. Additionally, as of December 31, 2014 and December 31, 2013, the Company had U.S. state net operating loss carryforwards of $403,634 and $130,021, respectively. These U.S. state net operating loss carryforwards expire in various years ending from December 31, 2017 to December 31, 2037. As of December 31, 2014 and December 31, 2013, the Company had net operating loss carryforwards related to foreign operations of $45,005 and $42,102. These net operating loss carryforwards, some of which have indefinite lives, begin to expire in 2018. The amount of net operating loss carryforwards reflected in this paragraph are presented on a tax return basis and differ from the amounts in the deferred tax table above which reflect the future tax benefit of the losses and are reflected net of unrecognized tax benefits. As such, the federal net operating loss carryforward of $438,363 includes the potential deduction for the payments made by OSG in its capacity as guarantor as mentioned above.
	In connection with the emergence from bankruptcy, under applicable tax regulations, the Company underwent an ownership change. As a result, there is an annual limitation on the use of pre-ownership change net operating losses, tax credits and certain other tax attributes to offset taxable income earned after the ownership change. The annual limitation is equal to the product of the applicable long-term tax exempt rate and the value of the company’s stock immediately before the ownership change. This annual limitation may be adjusted to reflect any unused annual limitation for prior years and certain recognized built-in gains and losses for the year. The Company does not believe that the limitations imposed will impact its ability to utilize any pre ownership change net operating losses before the carryforward period expires but could cause the timing of utilization to be impacted.
	The Company assessed the available positive and negative evidence to estimate 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. However, for certain state and foreign deferred tax assets, a significant piece of negative evidence was the cumulative loss incurred over the preceding three-year period. On the basis of the evaluation, the Company established a valuation allowance of $13,538 and $13,477 as of December 31, 2014 and 2013, respectively, to recognize only the portion of the deferred tax asset that is more likely than not to be realized. The valuation allowance increased by $61, $5,213 and $1,635 in 2014, 2013 and 2012, respectively, as a result of additional losses generated.
	During the years ended December 31, 2014, 2013 and 2012, the Company paid (net of refunds received) $266,867, $60,687, and $293, respectively, of income taxes of which $270,465 related to the settlement with the IRS in 2014, as part of the confirmation of the Equity Plan, settling the 2004 through 2012 tax years and $58,747 related to U.S. Federal income taxes in 2013.
	Reconciliations of the effective income tax rate attributable to pretax results and the U.S. statutory income tax rate follow:
	For the year ended December 31,	2014				2013				2012
	U.S. federal statutory income tax rate		35	%			35	%			35	%
	Adjustments due to:
	Foreign income not subject to tax(1)		59.7	%			-36.2	%			-31.3	%
	State taxes, net of federal benefit		0.6	%			0.5	%			-1.8	%
	Interest on unrecognized tax benefits		-3.4	%			4.9	%			-1.1	%
	Nondeductible reorganization costs		-6.7	%			-1.4	%			-0.4	%
	Foreign income and repatriations taxed in the U.S.		-0.9	%			-1.6	%			1.7	%
	Unremitted earnings of foreign subsidiaries		20.8	%			-				-
	Deferred compensation		-1.9	%			-				-
	Tax examination settlement		1.9	%			-				-
	Payments as guarantor		-62.6	%			-				-
	Change in tax status of subsidiary		-				0.9	%			-0.1	%
	U.S. income subject to tonnage tax		0.8	%			0.4	%			-0.6	%
	Other		-0.3	%			-0.2	%			-1.1	%
	Effective tax rate		43	%			2.3	%			0.3	%
	(1) In 2014, includes cancellation of indebtedness income associated with payments as guarantor which is separately reflected in the reconciliation of the effective income tax rate.
	The following is a tabular reconciliation of the total amounts of unrecognized tax benefits (excluding interest and penalties):
		2014			2013
	Balance of unrecognized tax benefits as of January 1,	$	391,830		$	374,826
Increases for positions taken in prior years		2,876			59
Decreases for positions taken in prior years		-			-14,240
Increases for positions related to the current year		180,509			31,838
Amounts of decreases related to settlements		-354,886			-
Reductions due to lapse of statutes of limitations		-5,001			-653
Balance of unrecognized tax benefits as of December 31,	$	215,328		$	391,830
Included in the balances of unrecognized tax benefits as of December 31, 2014 and 2013 are $211,075 and $28,527, 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 in the consolidated balance sheet. Related to the unrecognized tax benefits noted above, during the year ended December 31, 2014, the Company recorded additional interest expense of $15,259, primarily as a result of post-petition interest due to the IRS. At the Effective date, the Company paid interest of $28,473 to the IRS in settlement of its tax examination. As of December 31, 2014 the Company had recognized a liability for interest of $534. During 2013, the Company reduced the amount recorded for interest by a net of $49,101 as a result of the years in which the IRS’ claim included potential deemed dividends and other foreign income in taxable income and as of December 31, 2013, had recognized a liability for interest of $14,923.
The Company has filed an application for a Pre-Filing Agreement with the IRS with respect to OSG’s payments as guarantor made during 2014. As a result, the Company believes that it is reasonably possible that a decrease of up to $179,151 in unrecognized tax benefits may occur within the next twelve months. Such decrease could result in an increase in the Company’s deferred tax assets for net operating loss carryforwards or an increase in its tax basis in foreign subsidiaries.
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 $34,520 as of December 31, 2014. As of December 31, 2013, after taking into consideration such tax attributes, such as net operating loss carryforwards, and interest, the Company’s unrecognized tax benefits represent a liability for uncertain tax positions of $234,623 which is included in income taxes payable and a noncurrent reserve of approximately $26,585.
As of December 31, 2014, the Company generally is not subject to examination by U.S. federal tax authorities for years before 2013.

CAPITAL_STOCK_AND_STOCK_COMPEN

CAPITAL STOCK AND STOCK COMPENSATION	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Shareholders' Equity and Share-based Payments [Text Block]	NOTE 14 — CAPITAL STOCK AND STOCK COMPENSATION:
	The Company accounts for stock compensation expense in accordance with the fair value based method required by ASC 718, Compensation – Stock Compensation. Such fair value based method requires share based payment transactions to be measured based on the fair value of the equity instruments issued.
	Change in Capital Structure
	See Note 2, “Chapter 11 Filing and Emergence From Bankruptcy,” for information relating to the Equity Plan and Rights Offering. The holders of our common stock are entitled to one vote per share, and holders of the Class A Common Stock and Class B common stock are entitled to vote together as a class, on any matter to be voted upon by the stockholders, other than as described below.
	The provisions of our Amended and Restated Certificate of Incorporation setting forth the right of holders of shares of Class B Common Stock to receive the Aggregate Available Distribution (defined below) may not be amended without the affirmative vote of the holders of at least a majority of the outstanding shares of Class B Common Stock, nor may any corporate action which would alter or effect the rights of holders of shares of Class B Common Stock to receive the Aggregate Available Distribution as set forth in our Amended and Restated Certificate of Incorporation be taken without the affirmative vote of the holders of at least a majority of the outstanding shares of Class B Common Stock. In addition, except as otherwise contemplated by our Amended and Restated Certificate of Incorporation, any amendment to certain provisions therein may not adversely affect the rights of the holders of shares of Class B Common Stock in any manner that is unique to the Class B Common Stock, unless agreed to by a majority of the holders of the Class B Common Stock voting as a class.
	Our Class B Common Stock carries an entitlement to distribution of a percentage of the proceeds from the malpractice lawsuit against Proskauer Rose LLP (“Proskauer”) and four of its partners, net of related out-of-pocket expenses incurred by us, including legal fees, all reasonable and documented costs and expenses incurred and all payments made or to be made by us in respect of certain counterclaims or pursuant to indemnification obligations, as determined by our board of directors in good faith (such net amount, the “Net Litigation Recovery”). The aggregate amount of the Net Litigation Recovery that will be distributed to holders of the Class B Common Stock as of the relevant record date (the “Aggregate Available Distribution”) will be an amount equal to the product of the Net Litigation Recovery multiplied by 0.1. The holders of record of Class B Common Stock on the relevant record date will be entitled to receive, in respect of each share of Class B common stock held by such holder, a pro rata portion of the Aggregate Available Distribution calculated as a fraction thereof, the numerator of which shall be one and the denominator of which shall be 7,926,805. Any portion of the Aggregate Available Distribution that is not distributed to holders of Class B Common Stock as a result of shares of Class B Common Stock being converted into Class A Common Stock prior to the relevant record date will be property of the Company.
	Each share of Class B Common Stock can be converted at any time into one share of Class A Common Stock, and each Class B Warrant can be converted at any time into one Class A Warrant. Following the distribution of the Net Litigation Recovery (as defined in OSG’s Amended and Restated Certificate of Incorporation), all Class B Common Stock and Class B Warrants will be automatically converted into Class A Common Stock and Class A Warrants, respectively.
	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 of directors, at least 77% of the outstanding shares of each class of capital stock of the Company must be owned by U.S. Citizens. As of December 31, 2014,  the maximum percentage of shares of each of Class A and Class B Common Stock held by non-U.S. Citizens allowable under such policies and procedures had not been reached. At and during such time that the limit is reached with respect to shares of Class A Common Stock or Class B 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.
	Each Class A Warrant and Class B Warrant (together, the “Warrants”) represents the right to purchase one share of Class A Common Stock and one share of Class B Common Stock, respectively, 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 or Class B 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).
	Registration Rights Agreement
	On May 2, 2014, the Debtors entered into a registration rights agreement with each Commitment Party (as subsequently amended, the “Registration Rights Agreement”). On May 26, 2014, the Debtors and each of the Commitment Parties entered into an amendment to the Registration Rights Agreement which added, as parties to the Registration Rights Agreement, all Commitment Parties that were not Initial Commitment Parties. Pursuant to the Registration Rights Agreement, we are required to register, on a registration statement filed with the Securities and Exchange Commission (“SEC”), the resale of certain shares of Class A Common Stock and Class A Warrants for the benefit of the Commitment Parties and potentially certain other shareholders.
	Under the terms of the Registration Rights Agreement, the selling securityholders are provided with certain demand registration rights subject to certain conditions and limitations. At any time and from time to time after a shelf registration statement has been declared effective by the SEC, any one or more of the selling securityholders may request to sell all or any portion of their Registrable Securities (as defined in the Registration Rights Agreement) in an underwritten offering, provided that the total offering price of the securities to be offered in such offering is reasonably expected to exceed, in the aggregate (i) in the case of a demand by at least one selling securityholder that is an “affiliate” (within the meaning of Rule 405 under the Securities Act), $25 million or (ii) in all other cases, $75 million.
	Director Compensation -Restricted Common Stock
	On August 12, 2014, the Human Resources and Compensation Committee (the “Committee”) of the Board of Directors of the Company (the “Board”) approved cash compensation and equity awards for the directors serving on the Board (each, a “Director”). Thereafter, on August 13, 2014, the Board awarded 324,997 Class A common stock shares to the members of the Board having an aggregate fair market value of $975 and vesting in full on August 13, 2015 subject to the Director continuing to provide services to the Company through such date. The grant date fair value of the Class A Common Stock was deemed to be $3.00. The shares granted may not be transferred, pledged, assigned or otherwise encumbered prior to vesting. To the extent a Director’s service on the Board terminates prior to vesting on August 13, 2015, all of the shares of restricted stock will be forfeited without the payment of any consideration. Prior to the vesting date, a holder of restricted stock has 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 at the same time as common shareholders generally.
	Management Incentive Compensation Plan and Non-Employee Director Incentive Compensation Plan
	On September 23, 2014, the Committee approved the Overseas Shipholding Group, Inc. Management Incentive Compensation Plan (the “Management Plan”) and the Overseas Shipholding Group, Inc. Non-Employee Director Incentive Compensation Plan (the “Director Plan” and together with the Management Plan, the “Incentive Plans”).
	The purpose of the Incentive Plans is to promote the interests of the Company and its shareholders 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. Subject to adjustment, the maximum number of shares of the Company’s Class A Common Stock authorized for issuance is 37,000,000 shares under the Management Plan and 3,000,000 shares under the Director Plan.
	On September 23, 2014, the Committee also approved two forms of Stock Option Grant Agreements and two forms of Restricted Stock Unit Grant Agreements, each for use under the Management Plan (each a “Form of Grant Agreement”). Each Form of Grant Agreement provides for the grant of time-vested awards, which vest in equal installments on each of the first three anniversaries of the grant date, subject to the recipient of the award remaining employed with the Company on each such date. The awards made pursuant to certain Form of Grant Agreements are conditioned upon shareholder approval of the Management Plan within 12 months of the grant date.
	Management Compensation - Restricted Stock Units and Stock Options
	On September 29, 2014 (the “ Grant Date”), the Company awarded to certain members of senior management an aggregate 196,349 restricted stock units (“RSUs”) which may not be transferred, pledged, assigned or otherwise encumbered prior to vesting. 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. Settlement of the vested RSUs may be in either shares of Class A Common Stock or cash, as determined at the discretion of the Committee, and shall 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. As of the Grant Date, management deemed the fair value of the Class A Common Stock to be $3.65.
	On the Grant Date, the Company awarded to certain members of senior management an aggregate 453,586 stock options, which may not be transferred, pledged, assigned or otherwise encumbered prior to exercise. Each stock option represents an option to purchase one share of Class A Common Stock for an exercise price of $3.65 per share. Each stock option will vest in equal installments on each of the first three anniversaries of the Grant Date. The stock options expire on the business day immediately preceding the tenth anniversary of the Grant 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 recipient’s employment terminated and (ii) the expiration of the options, provided that if the Optionee’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 grant date fair value of the stock options of $1.58 was estimated using the Black-Scholes valuation model as further described below.
	A total of 38,503,722 shares of the Company’s Class A Common Stock may be issued or used as the basis for awards under the Incentive Plans as of December 31, 2014.
	The 2004 Stock Incentive Plan
	The Company’s 2004 Stock Incentive Plan (the “2004 Plan”) enabled the Company to grant stock-based awards, including stock options, stock appreciation rights, restricted stock and performance awards to employees, consultants and non-employee directors. On May 21, 2014, the Company filed notice with the Bankruptcy Court that it was rejecting the Company’s 2004 Plan effective June 1, 2014. As a result of the rejection of the 2004 Plan, all unvested awards and any OSG equity interests thereunder were cancelled and holders of unvested awards were not entitled to participate in the Rights Offering (see Note 2, “Chapter 11 Filing and Emergence from Bankruptcy,” to these consolidated financial statements) or to vote on or receive distributions under the Equity Plan (see Note 2). As a result of the cancellation of the unvested awards, the unrecognized stock compensation expense relating to unvested stock options, restricted common stock and restricted stock units was accelerated, and a charge of $1,796 was recorded to reorganization items in the consolidated statements of operations for the year ended December 31, 2014.
	There were no stock options, restricted common stock, restricted stock units or performance related grants under the 2004 Plan during the period from January 1, 2014 through the May 21, 2014 rejection of the 2004 Plan, nor during the year ended December 31, 2013.
	The Company granted a total of 45,000 restricted stock units during the year ended 2012 to certain of its non-employee directors. At the date of the award the fair market value of the Company’s stock was $10.00 per share. Each restricted stock unit represented a contingent right to receive one share of common stock upon the non-executive director’s termination of service as a board member. Such restricted stock units vested ratably over a four-year period, which period could have been accelerated provided that the director has served until the earlier of (a) the first anniversary of the grant date or (b) the next annual meeting of the Company’s stockholders. The restricted stock units had no voting rights and could not be transferred or otherwise disposed of while the non-employee director was a director.
	During the year ended December 31, 2012, the Company awarded a total of 401,409 shares of restricted common stock at no cost to certain of its employees, including senior officers. Restrictions limited the sale or transfer of these shares until they vest, which occurs over a four year period. During the restriction period, the shares will have voting rights and cash dividends would be paid if declared. The weighted average fair value of the restricted stock issued during the year ended December 31, 2012 was $10.09. At the Company’s emergence from bankruptcy, all unvested shares were cancelled.
	During the year ended December 31, 2012, the Company granted certain of its senior officers performance awards valued at an aggregate of approximately $1,307 on the grant date. Each performance award represented a contingent right to receive cash or, at the Company’s option, shares of common stock of the Company, based upon certain market related performance goals being met and the covered employees being continuously employed through the end of the three-year period over which the performance goals are measured. The performance related grants were valued using a Monte Carlo pricing model that takes into account the market related performance goals described in the grants. It was the Company’s intention (but not an obligation) to settle the awards in shares of the Company’s common stock to the extent such shares are available for issuance under the 2004 Plan on the settlement date.
	No performance related restricted stock units or performance related options vested during three years ended December 31, 2014, since the market related performance goals were not met.
	For both the Incentive Plans and the 2004 Plan 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 all of these grants of restricted stock, restricted stock units and performance related awards was $2,467, $61 and $6,115 during each of the years ended December 31, 2014, 2013 and 2012, respectively. Such compensation expense for 2014 and 2013 is net of benefits of $279 and $3,935, respectively, relating to the true up of estimated forfeiture estimates to reflect actual experience for the 2004 Plan restricted stock grants.
	Activity with respect to restricted common stock and restricted stock units under all plans during the three years ended December 31, 2014 is summarized as follows:
	Activity for the three years ended December 31, 2014	Class A Common Stock		Common Stock
	Nonvested Shares Outstanding at December 31, 2011				509,060
	Granted				446,409
	Vested ($39.41 to $64.92 per share)				-159,530
	Forfeited				-15,345
	Nonvested Shares Outstanding at December 31, 2012				780,594
	Vested ($10.00 to $43.40 per share)				-155,932
	Forfeited				-379,163
	Nonvested Shares Outstanding at December 31, 2013		-		245,499
	Granted		521,346		-
	Vested ($10.00 to $43.40 per share)		-		-82,722
	Forfeited		-		-42,887
	Cancelled		-		-119,890
	Nonvested Shares Outstanding at December 31, 2014		521,346		-
	Stock option activity under all plans during the three years ended December 31, 2014 is summarized as follows:
	Activity for the three years ended December 31, 2014	Class A Common Shares		Common Stock
	Options Outstanding at December 31, 2011				1,868,687
	Granted				377,653
	Forfeited				-41,559
	Exercised				-
	Options Outstanding at December 31, 2012				2,204,781
	Granted				-
	Forfeited				-1,523,825
	Exercised				-
	Options Outstanding at December 31, 2013		-		680,956
	Granted		453,586		-
	Forfeited		-		-39,848
	Exercised		-		-
	Cancelled		-		-641,108
	Options Outstanding at December 31, 2014		453,586		-
	Options Exercisable at December 31, 2014		-		-
	The weighted average remaining contractual life of the outstanding stock options at December 31, 2014 was 9.7 years. The range of exercise prices of the stock options outstanding at December 31, 2014 was $3.65 per share. The weighted average exercise prices of the stock options outstanding at December 31, 2014 and 2013 were $3.65 and $39.48 per share, respectively. None of the stock options which vested during the three year period ended December 31, 2014 were “in-the-money.”
	The fair values of the options granted were estimated on the dates of grant using the Black-Scholes option pricing model with the following weighted average assumptions for the 2014 and 2012 grants: risk free interest rates of 2.2% and 1.2%, dividend yields of 0% and 1.9%, expected stock price volatility factors of .42 and .54, and expected lives of 6.0 years. The weighted average grant-date fair values of options granted in 2014 and 2012 were $1.58 and $3.83, respectively.
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.
Net compensation expense/(income) as a result of the grants of stock options described above was $338, $(192) and $1,764 during each of the years ended December 31, 2014, 2013, and 2012, respectively.
As of December 31, 2014, there was $1,917 of unrecognized compensation cost related to nonvested share-based compensation arrangements. That cost is expected to be recognized over a weighted average period of 2.53 years.

ACCUMULATED_OTHER_COMPREHENSIV

ACCUMULATED OTHER COMPREHENSIVE LOSS	12 Months Ended
	Dec. 31, 2014
Stockholders' Equity Note [Abstract]
Accumulated Other Comprehensive Income (Loss) Note [Text Block]	NOTE 15 —ACCUMULATED OTHER COMPREHENSIVE LOSS
	The components of accumulated other comprehensive loss, net of related taxes, in the consolidated balance sheets follow:
	At December 31,		2014		2013
	Unrealized losses on derivative instruments, substantially entered into by the Company’s equity method joint venture investees		$	-61,547	$	-59,263
	Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement benefit plans)			-21,833		-10,081
			$	-83,380	$	-69,344
	Net unrealized gains or losses on the Company’s investments in marketable securities that are classified as available-for-sale securities are also reported as a component of accumulated other comprehensive loss. There were no such securities held by the Company as of December 31, 2014 and 2013.
	The following tables present the changes in the balances of each component of accumulated other comprehensive loss, net of related taxes, for the three years ended December 31, 2014.
			Unrealized		Unrealized		Items not yet		Total
			gains/(losses)		losses on cash		recognized as a
			on available-		flow hedges		component of
			for-sale				net periodic
			securities				benefit cost
							(pension and
							other
							postretirement
							plans)
	Balance as of December 31, 2013		$	-	$	-59,263	$	-10,081	$	-69,344
	Current period change excluding amounts reclassified from accumulated other comprehensive income			-		-21,850		-11,969		-33,819
	Amounts reclassified from accumulated other comprehensive loss			-		19,566		217		19,783
	Total change in accumulated other comprehensive loss			-		-2,284		-11,752		-14,036
	Balance as of December 31, 2014		$	-	$	-61,547	$	-21,833	$	-83,380
	Balance as of December 31, 2012		$	49	$	-98,937	$	-14,893	$	-113,781
	Current period change excluding amounts reclassified from accumulated other comprehensive loss			-181		19,114		4,336		23,269
	Amounts reclassified from accumulated other comprehensive loss			132		20,560		476		21,168
	Total change in accumulated other comprehensive loss			-49		39,674		4,812		44,437
	Balance as of December 31, 2013		$	-	$	-59,263	$	-10,081	$	-69,344
	Balance as of December 31, 2011		$	34	$	-104,554	$	-14,787	$	-119,307
	Current period change excluding amounts reclassified from accumulated other comprehensive loss			-836		-20,709		-409		-21,954
	Amounts reclassified from accumulated other comprehensive loss			851		26,326		303		27,480
	Total change in accumulated other comprehensive loss			15		5,617		-106		5,526
	Balance as of December 31, 2012		$	49	$	-98,937	$	-14,893	$	-113,781
	The following table presents information with respect to amounts reclassified out of accumulated other comprehensive loss for the three years ended December 31, 2014.
			Years Ended December 31,
	Accumulated Other Comprehensive Loss Component		2014		2013		2012		Statement of Operations
									Line Item
	Unrealized losses on available-for-sale securities:
	Impairment recorded relating to securities held by the Company's foreign subsidiaries		$	-	$	-132	$	-851	Other income/(expense)
	Unrealized losses on cash flow hedges:
	Interest rate swaps entered into by the Company's equity method joint venture investees			-19,566		-20,560		-20,864	Equity in income of affiliated companies
	Interest rate swaps entered into by the Company's subsidiaries			-		-		-7,697	Interest expense
	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			-260		-678		-526	General and
									administrative expenses
	Net periodic benefit costs associated with pension and postretirement benefit plans for seagoing employees			97		65		-24	Vessel expenses
				-19,729		-21,305		-29,962	Total before tax
				-54		137		2,482	Tax (provision) or benefit (1)
			$	-19,783	$	-21,168		-27,480	Total net of tax
	-1	The tax (provision)/benefit relates to the net periodic benefit costs of the Company's pension and postretirement  benefit plans as well as interest rate swaps entered into by the Company's domestic subsidiaries
	The following amounts are included in accumulated other comprehensive loss at December 31, 2014, which have not yet been recognized in net periodic cost: unrecognized prior service credits of $1,112 ($419 net of tax) and unrecognized actuarial losses $29,907 ($22,252 net of tax). The prior service credit and actuarial loss included in accumulated other comprehensive loss and expected to be recognized in net periodic cost during 2015 are a gain of $235 ($118 net of tax) and a loss of $1,152 ($819 net of tax), respectively.
	At December 31, 2014, the Company expects that it will reclassify $19,083 net losses on derivative instruments from accumulated other comprehensive loss to earnings during the next twelve months due to the payment of variable rate interest associated with floating rate debt of the Company’s FSO and LNG equity method investees and interest rate caps held by the Company’s subsidiaries.
	See Note 7, “Equity Method Investments,” for additional information relating to derivatives held by the Company’s equity method investees and Note 11, “Fair Value of Financial Instruments, Derivatives and Fair Value,” for additional disclosures relating to derivative instruments.
	The income tax expense/(benefit) allocated to each component of other comprehensive loss follows:
			Tax (expense)/		Tax (expense)/
			benefit on		benefit on items
			unrealized		not yet recognized
			gains/(losses) on		as a component of
			cash flow hedges		net periodic benefit
					cost
	For the year ended December 31, 2014
	Current period change excluding amounts reclassified from accumulated other comprehensive income		$	115	$	3,639
	Amounts reclassified from accumulated other comprehensive income			-		54
	Total change in accumulated other comprehensive loss		$	115	$	3,693
	For the year ended December 31, 2013
Current period change excluding amounts reclassified from accumulated other comprehensive income		$	-	$	-2,899
Amounts reclassified from accumulated other comprehensive income			-		-137
Total change in accumulated other comprehensive loss		$	-	$	-3,036
For the year ended December 31, 2012
Current period change excluding amounts reclassified from accumulated other comprehensive income		$	131	$	118
Amounts reclassified from accumulated other comprehensive income			-2,235		-247
Total change in accumulated other comprehensive loss		$	-2,104	$	-129

LEASES

LEASES	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Leases of Lessee and Lessor Disclosure [Text Block]	NOTE 16 — LEASES:
		1	Charters-in:
	Between December 31, 2012 and April 2013, the Bankruptcy Court issued orders approving the Company’s rejection of leases on 25 chartered-in International Flag vessels. The Company entered into new lease agreements at lower rates on eight of the chartered-in vessels (seven Handysize Product Carriers and one Aframax), which lease agreements were assumed as amended pursuant to orders of the Bankruptcy Court, at lower rates. One Suezmax and one Handysize Product Carrier were redelivered to owners in December 2012 and an additional fifteen vessels (11 Handysize Product Carriers, two Panamax Product Carriers, one Suezmax and one Aframax), were redelivered during the four months ended April 30, 2013.
	The Company’s policy is to calculate estimates for lease termination costs related to the rejected charters using a market participant’s discount rate. For the years ended December 31, 2013 and 2012, the Company recorded estimated charges for lease termination costs totaling $248,839 and $30,187, respectively, related to the rejected vessel charters that had been redelivered to their owners or amended through April 30, 2013. These charges, which are included in reorganization items, net in the consolidated statements of operations, reflect revisions made to the charges originally recorded as a result of the Bankruptcy Court’s approval of agreements entered into with the counterparties for the 25 chartered-in International Flag vessels that have resulted in agreed amended claims. The related reserve of $282,599 was included in Liabilities Subject to Compromise in the consolidated balance sheet as of December 31, 2013.
	Effective August 5, 2014, the Company emerged from bankruptcy and during the month of August, allowed claims related to the rejected or amended vessel charters described above were settled. These settlements resulted in interest expense charges of $7,453 for post-petition contractual interest and reorganization item charges of $6,419 for post-petition interest required by the Equity Plan, for the year ended December 31, 2014. See Note 2, “Chapter 11 Filing and Emergence from Bankruptcy,” for additional information.
	As of December 31, 2014, the Company had commitments to charter-in 18 vessels. All of the charter-ins are accounted for as operating leases, of which 13 are bareboat charters and five are time charters. Lease expense relating to charters-in is included in “charter hire expenses” on the consolidated statements of operations.
	Bareboat Charters-in:
	At December 31, 2014		Amount		Operating Days
	2015		$	97,817		4,745
	2016			99,038		4,758
	2017			98,219		4,713
	2018			93,200		3,929
	2019			111,819		3,470
	Thereafter			39,278		1,568
	Net minimum lease payments		$	539,371		23,183
	Time Charters-in:
	At December 31, 2014		Amount		Operating Days
	2015		$	24,581		2,279
	2016			1,045		76
	Net minimum lease payments		$	25,626		2,355
	The future minimum commitments for time charters-in excludes amounts with respect to vessels chartered-in where the duration of the charter was one year or less at the inception but includes amounts with respect to workboats employed in the International Crude Tankers Lightering business. Time charter-in commitments have been reduced to reflect estimated days that the vessels will not be available for employment due to drydock because the Company does not pay time charter hire when time chartered-in vessels are not available for its use. Certain of the bareboat charters-in provide for the payment of profit share to the owners of the vessels calculated in accordance with the respective charter agreements. Because such amounts and the periods impacted are not reasonably estimable they are not currently reflected in the table above. Certain of the charters in the above tables also provide the Company with renewal and purchase options.
	2. Charters-out:
	The future minimum revenues, before reduction for brokerage commissions, expected to be received on noncancelable time charters and certain COAs for which minimum annual revenues can be reasonably estimated and the related revenue days (revenue days represent calendar days, less days that vessels are not available for employment due to repairs, drydock or lay-up) are as follows:
					Revenue
	At December 31, 2014		Amount		Days
	2015		$	423,230		9,268
	2016			274,875		4,927
	2017			180,087		2,825
	2018			124,536		1,719
	2019			78,067		933
	Thereafter			176,082		2,078
	Net minimum lease payments		$	1,256,877		21,750
	Future minimum revenues do not include (1) the Company’s share of time charters entered into by the pools in which it participates, (2) the Company’s share of time charters entered into by the joint ventures, which the Company accounts for under the equity method and (3) COAs for which minimum annual revenues cannot be reasonably estimated. Revenues from those COAs that are included in the table above, $26,559 (2015), $22,023 (2016), $22,347 (2017), $22,698 (2018), $23,031 (2019) and $6,356 (2020), are based on minimum annual volumes of cargo to be loaded during the contract periods at a fixed price, and do not contemplate early termination of the COAs as provided in the agreements. Amounts that would be due to the Company in the event of the cancellation of the COA contracts have not been reflected in the above table. 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 there is no assurance that such estimate will be reflective of the actual off-hire in the future.
	Effective September 1, 2012, the Company entered into a termination, settlement and replacement agreement with Sunoco, a core customer of the Company’s Delaware Bay lightering business. The agreement, among other things, provided for (i) a 50% reduction of the required minimum barrel volumes under the long-term lightering contract; (ii) Sunoco’s relinquishment of any right to approximately $27,100 previously paid to the Company and accounted for as deferred revenues, which otherwise would have been carried forward and applied toward the cost of lightering barrels for Sunoco in excess of the minimum barrel volumes stated in the original lightering contract; and (iii) the payment by Sunoco of $13,300 as additional compensation for the reduction in the minimum barrels under the replacement agreement. A total of $40,400 was recognized in shipping revenues during the third quarter of 2012 related to this termination, settlement and replacement agreement. The new agreement runs through April 2020.
	3	Office space:
	The future minimum commitments under lease obligations for office space are as follows:
	At December 31, 2014
	2015		$	1,890
	2016			1,059
	2017			523
	2018			314
	Net minimum lease payments		$	3,786
	In April 2013, the Bankruptcy Court approved the Company’s rejection of the lease agreement for its then corporate headquarters office space. The Company vacated the office space on June 30, 2013 and recorded a provision of $3,646 for the estimated damages it expected the Bankruptcy Court would allow the building owner to claim, which is included in its provision for estimated claims on rejected executory contracts, a component of Reorganization items, net in the consolidated statement of operations. The Company also recorded a $1,638 non-cash write-off of the unamortized cost of leasehold improvements and other property for the year ended December 31, 2013. For the year ended December 31, 2014, the Company recorded charges to reorganization items in the consolidated statement of operations of $646, relating to changes in estimate of the expected allowed claim. In conjunction with the Company’s emergence from bankruptcy, $4,132, inclusive of post-petition interest, was paid in settlement of the office lease claim.
	The rental expense for office space, which is included in general and administrative expenses in the consolidated statements of operations, amounted to $2,264 in 2014, $3,959 in 2013 and $4,550 in 2012.

PENSION_AND_OTHER_POSTRETIREME

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	NOTE 17 —PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS:
	For the years ended December 31, 2014 and December 31, 2013 pension and other benefit liabilities are included in other liabilities in the consolidated balance sheets, except for pension and other postretirement benefit liabilities relating to plans associated with Debtor entities, which were classified as liabilities subject to compromise as of December 31, 2013, in accordance with ASC 852.
	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, 2014, the Maritrans Plan is the only domestic defined benefit pension plan in existence. 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.
	At the Petition Date, the Company had obligations under an unfunded, nonqualified supplemental defined benefit pension plan, which was terminated in December 2005, to five former employees entitled to deferred benefits. The Company’s obligations to pay benefits under the unfunded, nonqualified supplemental defined benefit pension plan were terminated in connection with the Company’s filing for bankruptcy. Accordingly, the obligation had been classified as liabilities subject to compromise in the consolidated balance sheet as of December 31, 2013. All claims relating to this nonqualified supplemental defined benefit pension plan were allowed by the Bankruptcy Court and paid as of the Effective Date or shortly thereafter. Such settlements are reflected as benefits paid in the change in benefit obligation during the year ended December 31, 2014 in the table below.
	Certain of the Company’s foreign subsidiaries have or had pension plans that, in the aggregate, are not significant to the Company’s consolidated financial position. The liabilities for such pension plans are included in other liabilities in the consolidated balance sheets as of December 31, 2014 and 2013. In August 2014, OSG provided a guarantee to the Trustees of the OSG Ship Management (UK) Ltd. Retirement Benefits Plan (the “Scheme”), which superseded entirely a guarantee previously entered into in November 2010, in respect to the obligations of OSG Ship Management (UK) Ltd., the principal employer of the Scheme, in the amount not to exceed GBP 4,896 ($7,601 at December 31, 2014).
	Multiemployer Pension and Postretirement Benefit plans
	Certain of the Company’s domestic 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. Management assessed these plans as individually significant because of the potential withdrawal liabilities under the AMO Pension Plan and the MEBA Defined Benefit Pension Plan and because the Company’s contributions to the SIU plan constituted more than 5% of total employer contributions to the plan during the pension plan year ending in 2013.
	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:
					Pension Protection						Contributions made
					Act
					Zone Status						by the Company
	Pension Plan		EIN / Pension		2014		2013		Rehabilitation		2014			2013			2012
			Plan Number						Plan Status
	AMO Pension Plan		13-1936709		Yellow (1)		Yellow (1)		Implemented		$	994		$	975		$	890
	MEBA Pension Plan		51-6029896		Green (1)		Green (1)		None			-			-			-
	Seafarers Pension Plan		13-6100329		Green (1)		Green (1)		None			396			407			416
									Total contributions		$	1,390		$	1,382		$	1,306
	(1) A "Red" Zone Status plan is a plan that is funded less than 65% and currently has a funding deficiency or a funding deficiency that is projected in the near term. A "Yellow" Zone Status plan is a plan that has a funding ratio between 65% and 80%. A "Green" Zone Status plan is a plan that is 80% funded or more.
	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, 2014 and any such contributions are subject to negotiations between the employers and the unions. In January 2012, MEBA and the employers agreed to reduce pension benefit accrual rates for future service. Additionally, MEBA and OSG agreed to contractual changes transferring pension contribution obligations to the union members through reallocation of amounts paid by OSG for wages and certain other compensation. In October 2009, the AMO plan filed with the Department of Labor as being in critical status as defined by the Pension Relief Act of 2010. The related rehabilitation plan, which was implemented in 2010, eliminated or reduced certain adjustable benefits, including cost of living adjustments, early retirement and disability pensions. In addition, AMO froze their plan effective January 1, 2010 for the future accrual of benefits and imposed a 5% surcharge during 2011 on the contribution rate per man day. The AMO plan shifted from critical to endangered status as of the end of the 2012 plan year. The MEBA and SIU plans utilized the special 29-year amortization rules under Pension Protection Act to amortize their investment losses from 2008, instead of 15 years. In order to take advantage of this extended amortization period, the plans were not permitted to increase benefits through the 2012 plan years unless the increases were funded by additional contributions and other conditions were met. The Employee Retirement Income Security Act of 1974 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, 2013, the Company’s estimated withdrawal liability was approximately $17,503. Based on the actuarial report received from the trustees of the AMO Pension Plan, as of September 30, 2013, the Company’s estimated withdrawal liability was approximately $32,365. 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, 2014.
	The AMO, SIU and MEBA collective bargaining agreements expire in March 2015, June 2017 and June 2020, respectively. The collective bargaining agreements also require the Company to make contributions to certain other postretirement employee benefit plans the unions offer to their members. Such contributions were not material during the three years ended December 31, 2014.
	Certain other seagoing personnel of U.S. Flag vessels are covered under a defined contribution plan, the cost of which is funded as accrued. The costs of all these plans were not material during the three years ended December 31, 2014.
	Postretirement Benefit plans
	The Company also provides certain postretirement health care and life insurance benefits to qualifying domestic retirees and their eligible dependents. 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.
	Information with respect to the domestic pension and postretirement benefit plans for which the Company uses a December 31 measurement date, follow:
			Pension Benefits						Other Benefits
	At December 31,		2014			2013			2014			2013
	Change in benefit obligation:
	Benefit obligation at beginning of year		$	46,036		$	51,022		$	3,919		$	4,466
	Cost of benefits earned (service cost)			-			-			89			118
	Interest cost on benefit obligation			1,951			1,775			193			178
	Actuarial (gains)/losses			8,957			-4,500			1,043			-621
	Benefits paid			-4,526			-2,261			-125			-222
	Benefit obligation at year end			52,418			46,036			5,119			3,919
	Change in plan assets:
	Fair value of plan assets at beginning of year			36,023			31,392			-			-
	Actual return on plan assets			1,014			5,574			-			-
	Employer contributions			1,063			1,318			-			-
	Benefits paid			-2,395			-2,261			-			-
	Fair value of plan assets at year end			35,705			36,023			-			-
	Unfunded status at December 31		$	-16,713		$	-10,013		$	-5,119		$	-3,919
	Information for domestic defined benefit pension plans with accumulated benefit obligations in excess of plan assets follows:
	At December 31,		2014			2013
	Projected benefit obligation		$	52,418		$	46,036
	Accumulated benefit obligation			52,418			46,036
	Fair value of plan assets			35,705			36,023
			Pension benefits									Other benefits
	For the year ended December 31,		2014			2013			2012			2014			2013			2012
	Components of expense:
	Cost of benefits earned		$	-		$	-		$	-		$	89		$	118		$	195
	Interest cost on benefit obligation			1,951			1,775			2,032			193			178			237
	Expected return on plan assets			-2,494			-2,092			-1,873			-			-			-
	Amortization of prior-service costs			-			-			-			-316			-333			-233
	Amortization of transition obligation			-			-			-			7			7			10
	Recognized net actuarial loss			-			504			316			129			171			160
	Gain due to curtailment			-			-			-			-42			-			-
	Net periodic (benefit)/cost		$	-543		$	187		$	475		$	60		$	141		$	369
	The weighted-average assumptions used to determine benefit obligations follow:
			Pension benefits							Other benefits
	At December 31,		2014			2013				2014				2013
	Discount rate			3.75	%			4.5	%			4	%			5	%
	Rate of future compensation increases			-				-				-				-
	The selection of a 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:
		Pension benefits												Other benefits
For the year ended December 31,		2014				2013				2012				2014				2013			2012
Discount rate			4.5	%			3.75	%			4.5	%			5	%			4	%		4.5	%
Expected (long-term) return on plan assets			7	%			6.75	%			6.5	%			-				-			-
Rate of future compensation increases			-				-				-				-				-			-
The assumed health care cost trend rate for measuring the benefit obligation included in Other Benefits above is an increase of 8% for 2015 over the actual 2014 rates, with the rate of increase declining steadily thereafter by 1% per annum to an ultimate trend rate of 5% per annum in 2018. Assumed health care cost trend rates have a significant effect on the amounts reported for the health care plans. A 1% change in assumed health care cost trend rates would have the following effects:
		1% increase			1% decrease
Effect on total of service and interest cost components in 2014		$	34		$	-29
Effect on postretirement benefit obligation as of December 31, 2014		$	465		$	-434
Expected benefit payments are as follows:
		Pension benefits			Other benefits
2015		$	2,468		$	189
2016			2,597			194
2017			2,629			207
2018			2,738			214
2019			2,842			209
Years 2020-2024			15,624			1,190
		$	28,898		$	2,203
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 at December 31, 2014, by asset category are as follows:
Description		Fair Value			Level 1			Level 2
Cash and cash equivalents		$	1,099		$	1,099		$	-
Equity securities:
U.S. companies			17,259			17,259			-
International companies			7,333			7,333			-
Corporate debt securities			1,710			-			1,710
Mutual funds(1)			3,352			3,352			-
U.S. Treasury securities			3,923			3,923			-
Federal agency mortgage-backed securities			974			974			-
Sovereign securities			55			55			-
Total		$	35,705		$	33,995		$	1,710
-1	The mutual fund investments are invested in intermediate term bonds and fixed income instruments including (but not limited to) mortgage and other asset-backed securities and corporate debt securities of U.S. and non-U.S. issuers.
The Maritrans Plan has historically utilized a strategic asset allocation investment strategy that maintains a targeted allocation of 65% equity and 35% fixed income. The allocation is rebalanced periodically after considering anticipated benefit payments.
The Company contributed $1,063, $1,318 and $1,545 to the Maritrans Plan in 2014, 2013, and 2012, respectively. The Company does not expect to make contributions to the Maritrans Plan in 2015 because any minimum contributions required for 2015 will be met from excess contributions made during 2014 as a result of the provisions of the Highway and Transportation Funding Act of 2014 enacted in August 2014.
Employee Savings Plans
The Company also had defined contribution plans covering all eligible U.S. 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. The Company’s contributions to the plan during each of the three years ended December 31, 2014 were not material. All contributions to the plans are at the discretion of the Company.
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, 2014 and 2013 were $1,225 and $13,275, respectively. The unfunded obligations were included in other liabilities and in Liabilities Subject to Compromise, respectively, in the consolidated balance sheets as of December 31, 2014 and 2013. The decrease in the unfunded obligation as of December 31, 2014 reflects the cash settlement of obligations to participants terminated as part of the reduction in force announced in January 2014. See Note 19, “Severance and Relocation Costs and Agreements with Executive Officers,” for additional information. The cash settlements were made at the later of the Effective Date or the participant’s termination date (or shortly thereafter).

OTHER_INCOMEEXPENSE

OTHER INCOME/(EXPENSE)	12 Months Ended
	Dec. 31, 2014
Other Income and Expenses [Abstract]
Other Income and Other Expense Disclosure [Text Block]	NOTE 18 —OTHER INCOME/(EXPENSE):
	Other income/(expense) consists of:
	For the year ended December 31,	2014		2013		2012
	Investment income:
	Interest	$	359	$	856	$	431
	Dividends		-		-		36
	Gain/(loss) on sale or write-down of securities and investments		-		-197		-3,166
			359		659		-2,699
	Gain on derivative transactions		-		-		1,376
	Miscellaneous—net		67		190		9
		$	426	$	849	$	-1,314
	Proceeds from sales of available-for-sale securities and gross realized losses on such sales that were included in income before taxes during the years ended December 31, 2013 and 2012 were not material.
	As a matter of policy, the Company evaluates all material declines in fair value for impairment whenever the fair value of a security classified as available-for-sale has been below its cost basis for more than six consecutive months. In the period in which a decline in fair value is determined to be other than temporary, the carrying value of that security is written down to its fair value at the end of such period, thereby establishing a new cost basis. Unrealized holding gains and losses on investments in marketable securities that are classified as trading securities are included in other income on the consolidated statement of operations. During 2013 and 2012, in accordance with the Company’s accounting policy on other-than-temporary declines in fair value of available-for-sale securities, the Company recorded impairment losses aggregating $132 and $816, respectively. The Company also recorded a $2,600 loss on a cost method investment in a joint venture the Company exited during 2012.

SEVERANCE_AND_RELOCATION_COSTS

SEVERANCE AND RELOCATION COSTS AND AGREEMENTS WITH EXECUTIVE OFFICERS	12 Months Ended
	Dec. 31, 2014
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities Disclosure [Text Block]	NOTE 19 —SEVERANCE AND RELOCATION COSTS AND AGREEMENTS WITH EXECUTIVE OFFICERS:
	Severance and Relocation
	Severance related costs are recognized over the period commencing on the date on which the affected employees are notified and ending on the date when required services are completed.
	Costs Associated with Exit or Disposal Activities
	On January 13, 2014, the Company announced that certain subsidiaries of OSG that own or charter-in 33 International Flag vessels (which was subsequently increased to 46 vessels) intended to outsource certain management services, including, but not limited to, the technical management, certain aspects of commercial management and crew management to V. Ships UK Limited (“V.Ships”). Charges relating to employee transition and termination benefits and similar transition and termination costs (“Outsourcing RIF”) and set-up, wind-down and transitions costs (“Transition Costs”) are included separately in the consolidated statement of operations. Outsourcing RIF severance costs of $17,020 incurred for the year ended December 31, 2014 included $3,428 and $7,651 relating to the International Crude Tankers and International Product Carriers business segments, respectively, with the balance relating to corporate offices. Management does not expect to incur any significant additional Outsourcing RIF costs in 2015. Transition Costs of $3,427 incurred for the year ended December 31, 2014 included $1,672 and $1,260 relating to the International Crude Tankers and International Product Carriers business segments, respectively, with the balance relating to corporate offices. Management does not expect to incur significant additional costs relating to winding down activities of its foreign office locations in 2015.
	In conjunction with the aforementioned, on January 7, 2014, the then current Board of Directors of OSG (the “Predecessor Board”) and the Compensation Committee of the Predecessor Board approved a transitional incentive program for certain non-executive employees (the “Transition NEIP”), which was subsequently approved by the Bankruptcy Court on February 3, 2014. In order to achieve the restructuring described above, the Company required the commitment of the employees whose responsibilities would ultimately be outsourced or rendered unnecessary by virtue of the outsourcing (the “Transitional Employees”). The Transition NEIP, a component of the employee transition and termination benefits and similar transition and termination costs described above, is a broad based plan intended to offer compensation incentives to substantially all of the non-executive Transitional Employees (the “Eligible Employees”) upon the achievement of specific objectives (“Objectives”) related to the operations and restructuring of OSG’s international operations. For Eligible Employees, the annualized target awards ranged from 25% to 75% of base salary. The total cost of the incentive payments under the Transition NEIP was approximately $3,463.
	In April 2013, thirty-seven employees, including three senior executive officers of the Company, were terminated as part of a reduction in force (“April 2013 RIF”). April 2013 RIF severance costs for the years ended December 31, 2014 and 2013 were a release of reserves of $192 and a charge of approximately $3,427. April 2013 RIF severance costs allocated to the Company’s three business segments were immaterial for both years.
	In February 2013, the Company’s then-current Chief Executive Officer resigned. In conjunction with this resignation, the Company reversed previously recognized compensation expense of $3,209 relating to unvested restricted stock and stock option awards, which is reflected in general and administrative in the statement of operations for the year ended December 31, 2013.
	In the first quarter of 2012, the Company announced the relocation of the technical management (“TMC”) of its conventional International Flag crude oil tanker fleet from its Newcastle, U.K. office to its Athens, Greece office. In connection therewith, approximately 50 employees were terminated in Newcastle. The Company released excess reserves (net of additional provisions) of $422 and recorded charges totaling $3,163 for the years ended December 31, 2013 and 2012, respectively, related to the severance and relocation of technical management.
	Activity relating to the reserves for the Outsourcing and April 2013 RIFs for the two years ended December 31, 2014 is summarized as follows:
		Outsourcing RIF		April 2013 RIF
	Activity for the year ended December 31, 2013:
	Provision			$	3,824
	Change in estimate				25
	Utilized				-2,059
	Release of excess reserves				-422
	Balance at December 31, 2013	$	-		1,368
	Provision		18,616		-
	Change in estimate		-1,831		-
	Utilized		-15,626		-1,176
	Release of excess reserves		-		-192
	Balance at December 31, 2014	$	1,159	$	-
	The above table excludes related professional fees which are expensed as incurred.
	Agreements with Executive Officers
	On August 11, 2014, Captain Robert E. Johnston, President and Chief Executive Officer of the Company, retired from his positions as Chief Executive Officer and President and ceased to be an employee of the Company. On August 11, 2014, the Company entered into a letter agreement with Captain Johnston, which supersedes entirely the letter agreement previously entered into between the Company and Captain Johnston on March 22, 2013 and provides, among other things, that Captain Johnston will serve the Company as a consultant until December 31, 2015 (the “Consulting Period”). In exchange for Captain Johnston’s consulting services, the Company will pay Captain Johnston a monthly fee of $56 during the Consulting Period. In addition to severance in the amount of $675 under the Company’s severance plan, pursuant to the letter agreement, Captain Johnston was paid $1,013 with respect to his 2014 bonus and $6,399 in full satisfaction of his entitlement under the Company’s unfunded, non- qualified supplemental savings plan.
	On June 15, 2012, the Company entered into agreements with the Company’s then-current Chief Financial Officer and the Head of U.S. Strategic Business unit (the then-current President and Chief Executive Officer referred to in the preceding paragraph), to pay each executive officer a lump sum retention bonus of $1,500 in order to encourage their continued employment through to June 30, 2014. Each executive officer was responsible to repay the full gross amount of the retention bonus to the Company within thirty days if they are terminated by the Company for cause or resign without good reason, as defined within the agreements.

2014_AND_2013_QUARTERLY_RESULT

2014 AND 2013 QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Text Block]	NOTE 20 — 2014 AND 2013 QUARTERLY RESULTS OF OPERATIONS (UNAUDITED):
	Selected Financial Data for the Quarter Ended		March 31,  (1)		June 30,  (1)		Sept. 30,  (1)		Dec. 31,
	2014
	Shipping revenues		$	292,446	$	241,777	$	206,283	$	216,928
	Gain on disposal of vessels, including impairments			1,477		4		2,753		6,298
	Income/(loss) from vessel operations			34,630		-1,529		14,525		47,476
	Interest expense (2)			-123		-174,511		-29,111		-28,746
	Reorganization items, net			-29,256		-86,123		-49,756		-6,338
	Income tax benefit/(provision) (3)			-1,329		50,414		63,544		2,179
	Net income/(loss)			12,550		-201,967		10,614		26,530
	Basic and Diluted net income/(loss) per share - Common Stock		$	0.41	$	-6.61	$	-	$	-
	Basic and Diluted net income/(loss) per share - Class A and Class B		$	-	$	-	$	0.03	$	0.05
	(1)	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share.  The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
	(2)	Interest expense of $73,637 for the Unsecured Revolving Credit Facility and interest expense of $73,660 for the Unsecured Senior Notes relating to post-petition contractual interest (which includes default interest) were recorded in the second quarter.
	(3)	As discussed in Note 13, "Taxes," there was an income tax benefit for the year ended December 31, 2014 due to a) a change in the mix of U.S. and foreign income and losses, primarily occurring in the second quarter and b) the Company released its deferred tax liability for undistributed earnings of its foreign subsidiaries attributable to the excess of the $1,500,000 facility limit over the cumulative potential deemed dividends arising from drawdowns by OSG under such facility and recorded an income tax benefit of $55,602 in the third quarter.
	Selected Financial Data for the Quarter Ended		March 31,		June 30,		Sept. 30,		Dec. 31,
	2013
	Shipping revenues		$	247,438	$	228,114	$	267,342	$	273,102
	Gain/(loss) on disposal of vessels, including impairments (1)			-22		1,228		-63		-382,614
	Income/(loss) from vessel operations			1,221		432		7,768		-376,619
	Interest expense (2)			-288		-31		-3		-28
	Reorganization items, net (3)			-184,621		-37,503		-14,705		-90,341
	Income tax benefit/(provision)			5,835		1,899		-1,947		8,958
	Net income/(loss)			-167,762		-24,147		960		-447,281
	Basic and diluted net income/(loss) per share		$	-5.51	$	-0.79	$	0.03	$	-14.67
	(1)	As discussed in Note 6, "Vessels, Deferred Drydock and Other Property," vessel impairment charges aggregating $365,976 were recorded in the fourth quarter. Further, as discussed in Note 3, "Summary of Significant Accounting Policies," and Note 9, "Intangible Assets," impairment charges of $9,589 for goodwill and $6,625 for intangible assets related to the International Crude Tankers Lightering business were recorded in the fourth quarter.
	(2)	As discussed in Note 2, "Chapter 11 Filing and Emergence from Bankruptcy," and Note 10, "Debt," the Debtors filed a petition for relief under Chapter 11 and its debt agreements were classified as liabilities subject to compromise as of December 31, 2013. For the quarter ended December 31, 2013, interest expense of $17,168 was accordingly not recorded.
	(3)	Also discussed in Note 2, the Company adjusts its accrued liabilities relating to rejected executory contracts when new information becomes available. In the fourth quarter, the Company increased its accruals by $69,154 based upon such new information.

CONTINGENCIES

CONTINGENCIES	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Text Block]	NOTE 21 — CONTINGENCIES:
	The Company’s policy for recording legal costs related to contingencies is to expense such legal costs as incurred.
	Class Action Lawsuits and Derivative Actions
	The Company has fully and finally resolved all potential direct claims by members of the putative class of securities claimants through a settlement effectuated through the Equity Plan, which became effective on August 5, 2014. Under the terms of that settlement, the Equity Plan provides for full satisfaction of the claims of the putative class through (i) $7,000 in cash, which was paid on August 5, 2014, (ii) 15% of the net litigation recovery in the action against Proskauer, described below, (iii) $5,000 in cash, payable following the entry of a final order resolving the Proskauer action, (iv) $3,000 in cash, payable by the reorganized Company on August 5, 2015, (v) proceeds of any residual interest the Company has in certain director and officer insurance policies, and (vi) any remaining cash in the class E1 disputed claims reserve established by the Equity Plan following resolution of all other class E1 claims. The settlement proceeds will be held in escrow pending allocations and distributions to members of the putative class to be determined by the district court overseeing the Exchange Act claims.
	The settled claims stem from the Company’s filing of a Form 8-K on October 22, 2012 disclosing that on October 19, 2012 the Audit Committee of the Board of Directors of the Company, on the recommendation of management, concluded that the Company’s previously issued financial statements for at least the three years ended December 31, 2011 and associated interim periods, and for the fiscal quarters ended March 31, 2012 and June 30, 2012, should no longer be relied upon. Shortly thereafter several putative class action suits were filed in the United States District Court for the Southern District of New York (the “Southern District”) against the Company, its then President and Chief Executive Officer, its then Chief Financial Officer, its then current and certain former members of its Board of the Directors, its current independent registered public accounting firm, and underwriters of the Company’s public offering of notes in March 2010 (the “Offering”). The Company’s former independent registered public accounting firm was later added as a defendant. Subsequent to the Company’s filing for relief under Chapter 11, these suits were consolidated and the plaintiffs filed an amended complaint that does not name the Company as a defendant. The consolidated suit is purportedly on behalf of purchasers of Company securities between March 1, 2010 and October 19, 2012 and purchasers of notes in the Offering. The plaintiffs allege that documents that the Company filed with the SEC were defective, inaccurate and misleading, that the plaintiffs relied on such documents in purchasing the Company’s securities, and that, as a result, the plaintiffs suffered losses. The plaintiffs assert claims under the Securities Act against all defendants and claims under the Securities Exchange Act of 1934 (the “Exchange Act”) against the then former President and former Chief Financial Officer of the Company. Following additional amendments on plaintiffs’ Exchange Act claims and motion to dismiss briefing, on April 28, 2014, the Southern District denied the motion to dismiss the Exchange Act claims filed by the then former President and former Chief Financial Officer on the third amended complaint. On July 2, 2014, the Southern District issued a scheduling order provided that discovery would be completed by July 22, 2015. On October 20, 2014, the plaintiffs moved for leave to file another amended complaint alleging claims under the Exchange Act against the Company’s current and former independent registered public accounting firms, and on November 28, 2014, the Southern District denied the plaintiffs’ motion. On February 17, 2015, the Company’s former independent registered public accounting firm requested that the Southern District strike the class allegations in the active complaint as they relate to that firm. On March 2, 2015, the Southern District stayed all depositions to allow the Company’s former independent registered public accounting firm to move for summary judgment or judgment on the pleadings. Briefing on that motion is expected to be completed by April 17, 2015.
	The plaintiffs in the Southern District action filed a proof of claim against the Company in the Bankruptcy Court. Pursuant to a settlement with such plaintiffs and the putative class on whose behalf their claim is filed, their direct claims against the Company are fully and finally resolved based on the Equity Plan treatment described above. Separately, certain of the defendants in the Southern District have filed claims in the Bankruptcy Court against the Company for indemnification or reimbursement based on potential losses incurred in connection with such action. Certain of those indemnification claims, asserted by former directors of the Company, have been released pursuant to the Equity Plan. In addition, the indemnification claims asserted by the Company’s former underwriters have been capped at no more than $1,500, pursuant to orders of the Bankruptcy Court. All claims of the defendants in the Southern District against the Company are subordinated pursuant to Section 510(b) of the Bankruptcy Code and are classified in Class E1. Under the Equity Plan, subordinated claims against the Company are limited to recoveries from a segregated reserve of $2,000 to be funded by the Company pursuant to the Equity Plan. The Equity Plan and related confirmation order do not permit any recoveries by the defendants beyond this $2,000 cap. Any amounts remaining following full and complete satisfaction of all Class E1 claims, including claims of defendants in the Southern District, will be distributed to members of the putative class pursuant to the terms of the settlement described above. The Equity Plan and confirmation order foreclose the defendants in the Southern District from pursuing any other or further remedies against the Company.
	As such, management estimates the amount of its exposure with respect to the actions pending before the Southern District described above at between zero and $2,000.
	Proskauer Action
	On February 23, 2014, Proskauer and four of its partners filed an action in the Supreme Court of the State of New York, County of New York (the “Supreme Court”) against the then Senior Vice President, General Counsel and Secretary and the former Chief Financial Officer alleging that the defendants engaged in tortious and fraudulent conduct that caused significant harm to the plaintiffs and the Company. The plaintiffs alleged that the defendants made false representations and thereby deceived and misled Proskauer into providing legal advice to the Company, which was the subject of the Company’s malpractice suit against Proskauer and four of its partners filed on November 18, 2013 in the Bankruptcy Court. On May 1, 2014, the defendants in the action filed by Proskauer and four of its partners filed motions to dismiss the action. On June 9, 2014, the plaintiffs filed an amended complaint that included certain additional factual allegations and an additional claim against the former Chief Financial Officer of the Company. On July 18, 2014 the defendants filed motions to dismiss the plaintiffs’ amended complaint. On January 15, 2015, the Supreme Court dismissed the plaintiffs’ amended complaint against the defendants. On March 2, 2015, the plaintiffs appealed the Supreme Court’s decision to the Appellate Division of the Supreme Court, First Department.
	On February 21, 2014, the Bankruptcy Court declined to hear the Company’s malpractice claims against Proskauer and four of its partners that were filed on November 18, 2013 under the doctrine of permissive abstention, and on March 11, 2014, the Company re-filed its malpractice claims against such defendants in the Supreme Court. On April 11, 2014, Proskauer and four of its partners filed a motion to dismiss the malpractice action, and on September 10, 2014, the Supreme Court denied the motion to dismiss the legal malpractice for breach of duty of care claim but granted the motion to dismiss the legal malpractice for breach of duty of loyalty claim as subsumed within the duty of care claim. Proskauer and four of its partners appealed this decision to the Appellate Division of the Supreme Court, First Department and on February 11, 2015 the appellate court heard oral argument on the appeal. A ruling on the appeal is pending. In addition, on December 3, 2014, the Company filed a motion with the Supreme Court for partial summary judgment on whether the “joint and several” liability provisions of certain of the Company’s prior loan agreements, which are the focus of the malpractice action, are unambiguous as a matter of law. That motion is fully briefed, and a court hearing on this motion is scheduled for June 11, 2015.
	On May 15, 2014, the Supreme Court issued a scheduling order for discovery in the Company’s malpractice action against Proskauer. Discovery has now commenced. Under the terms of the scheduling order, all discovery will be completed by September 30, 2015.
	SEC Investigation
	On November 13, 2012, the Company received from the staff of the SEC’s Division of Enforcement (the “Staff”) a request for documents relating to the statements in the Company’s October 22, 2012 Form 8-K. On January 29, 2013, the SEC issued a formal order of private investigation of the Company. The Company has provided documents to the SEC and intends to continue to cooperate fully with the SEC’s investigation.
	The Equity Plan provides for funding for potential liabilities that the SEC may assert in connection with its proof of claim (the “SEC Claim”) to the extent that the SEC Claim is allowed. The SEC filed the SEC Claim in respect of contingent and unliquidated amounts that the SEC may assert against the Company as a result of the outcome of its investigation of the Company and certain of its advisors. Pursuant to the Equity Plan, the Debtors will fund a cash reserve of up to $5,000 to satisfy any liabilities on account of the SEC Claim, solely to the extent and upon the entry of a final order of the Bankruptcy Court providing that the SEC Claim or any portion thereof is allowed. The SEC and the Debtors have agreed that there is no inference, assertion, concession, admission, determination or conclusion that should be drawn from the establishment of the reserve, as the SEC’s investigation of the Company, its advisors and individuals inside and outside of the Company is ongoing, and the SEC will make a determination of whether there were securities laws violations only at the conclusion of its investigation. The SEC has reached no such conclusion, and the Staff sought a reserve solely in recognition of the fact that the SEC had not completed its investigation prior to the Equity Plan’s confirmation.
	Environmental Incident
	On July 16, 2013 the Company received notification through its compliance reporting system that possible pollution violations from one of its Marshall Islands-flagged vessels had occurred. The report alleged that there had been improper discharges of bilge holding tank contents directly overboard and not, as required by Company policies and law, through the installed Oily Water Separator or to shore side reception facilities.
	On July 26, 2013, after conducting a preliminary investigation, the Company informed the Marshall Islands Maritime Administration (the “Flag State”) of potential violations of law and the Flag State commenced an investigation. The Company has cooperated with the Flag State preliminary investigation. On July 31, 2013, the Company voluntarily disclosed to the U.S. Coast Guard and the U.S. Department of Justice the results of the Company’s and the Flag State’s preliminary investigations, including possible improper discharges from the vessel’s bilge holding tank and apparent false entries in, or apparent omission of required entries from, the vessel’s Oil Record Book Part I while the vessel was in U.S. waters. On June 4, 2014 the U.S. Coast Guard accepted the Company’s self-reporting of this matter under the Coast Guard’s voluntary disclosure policy. Under such policy, the Coast Guard will not recommend to the U.S. Department of Justice or other prosecuting authority that criminal charges be brought against the Company arising from this matter. The Company is cooperating with the Department of Justice in its investigation resulting from the voluntary disclosures. Any liabilities for potential fines or penalties that may be imposed in connection with this matter cannot be estimated as of December 31, 2014.
	Legal Proceedings Arising in the Ordinary Course of Business
	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, should not be material to the Company’s financial position, results of operations and cash flows.

SUMMARY_OF_SIGNIFICANT_ACCOUNT1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Cash and Cash Equivalents, Policy [Policy Text Block]	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. Management has designated cash reserves of $53,085 as of December 31, 2014 to be utilized for the settlement of certain unsecured claims, including disputed unsecured claims, and other bankruptcy related costs related to the Company’s recent emergence from bankruptcy. Such cash reserves, which are considered restricted cash due to management’s intent regarding these funds, are included in restricted cash in the current assets section of the consolidated balance sheet based on management’s estimate of when these funds are likely to be disbursed. Such restricted cash reserves will be subject to adjustment based upon the settlement of claims and other bankruptcy related costs and changes in estimates of future funding requirements. Additionally, restricted cash as of December 31, 2014 includes $70,093 of legally restricted cash relating to the OIN Term Loan. The OIN Term Loan stipulates that if annual aggregate cash proceeds of OIN asset sales exceed $5,000, cash proceeds from each such sale are required to be reinvested in vessels within twelve months of such sale or be used to prepay the principal balance outstanding of the OIN Term Loan. Activity relating to restricted cash is reflected in investing activities in the consolidated statements of cash flow. See Note 10, “Debt,” for a further discussion of the OIN Term Loan.
Inventory, Policy [Policy Text Block]	2	Inventories—Inventories, which consists principally of fuel, are stated at cost determined on a first-in, first-out basis.
Property, Plant and Equipment, Policy [Policy Text Block]	3	Vessels, 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 lives of the vessels, which are generally 25 years. Each vessel’s salvage value is equal to the product of its lightweight tonnage and an estimated scrap rate of $300 per ton.
		Other property, including buildings and 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 to 35 years.
	Interest costs are capitalized to vessels during the period that vessels are under construction. Interest capitalized aggregated $0 in 2014 and 2013 and $1,060 in 2012.
	Expenditures incurred during a drydocking are deferred and amortized on the straight-line basis over 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.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	4	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, an impairment charge would be recognized 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. If using an income approach in determining the fair value of a vessel, the Company will consider the discounted cash flows resulting from highest and best use of the vessel asset from a market-participant’s perspective. Alternatively, if using a market approach, the Company will obtain third party appraisals of the estimated fair value of the vessel. A long-lived asset impairment charge results in a new cost basis being established for the relevant long-lived asset. See Note 6, “Vessels, Deferred Drydock and Other Property,” for further discussion on the impairment charges recognized during the three years ended December 31, 2014.
Goodwill and Intangible Assets, Policy [Policy Text Block]	5	Goodwill and intangible assets—Goodwill and indefinite lived intangible assets acquired in a business combination are not amortized but are reviewed for impairment annually or more frequently if impairment indicators arise. 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 may be impaired.
	The Company’s intangible assets consist primarily of long-term customer relationships acquired as part of the 2006 purchase of Maritrans, Inc. (a component of the U.S. Flag business segment) and the 2007 purchase of the Heidmar Lightering business (a component of the International Crude Tankers business segment). The long-term customer relationships are being amortized on a straight-line basis over 20 years. The Company’s January 2014 announcement of its plans to (i) outsource the technical and commercial management of substantially all of its International Flag fleet and (ii) to exit the full service International Crude Tankers Lightering business by September 30, 2014 were determined to be triggering events warranting an interim impairment test of the $9,589 December 31, 2013 carrying value of Goodwill related to the acquisition of the Heidmar Lightering business as well as all the long-lived assets utilized in the International Crude Tankers Lightering business. To measure fair value, the Company reduced its estimates of future cash flows from this business to reflect the consideration above. The Company recorded a goodwill impairment charge of $9,589 in the quarter ended December 31, 2013.
		See Note 9, “Intangible Assets,” for further information on intangible assets impairment charges recognized during the three years ended December 31, 2014.
Accounting for Debt Financing Costs [Policy Text Block]	6	Deferred finance charges—Finance charges incurred in the arrangement of debt are deferred and amortized to interest expense on either an effective interest method or straight-line basis over the life of the related debt. Unamortized deferred finance charges of $48,186 relating to the Exit Financing Facilities are included in other assets on the consolidated balance sheet as of December 31, 2014.
	On November 14, 2012, amortization ceased on $10,517 of deferred financing costs relating to the Unsecured Senior Notes, the $1,500,000 Unsecured Revolving Credit facility and the secured term loans, when such indebtedness and the related deferred financing costs were reclassified to Liabilities Subject to Compromise in the consolidated balance sheets (see Note 10,“Debt”).
	As of December 2013, the Company had determined that it was more likely than not that the Unsecured Revolving Credit Facility and the Secured Term Loan facilities would not exist in the post emergence period and therefore the related aggregate unamortized deferred financing costs of $4,603 were written off and recorded as a charge to reorganization items, net in the consolidated statement of operations for the year ended December 31, 2013.
	As of December 2013, liabilities subject to compromise included reserves for estimated allowed claims relating to the Company’s Unsecured Senior Notes due in 2013, 2018 and 2024. Under ASC 852, original issue discounts and deferred financing costs are viewed as part of the valuation of the pre-petition debt that is subject to compromise. Therefore, the Company recorded charges of $2,909 and $5,914 as reorganization items in the consolidated statement of operations for the year ended December 31, 2014 for unamortized original issue discount and unamortized deferred financing costs related to the Unsecured Senior Notes since such Unsecured Senior Notes were reinstated at the full amount of face value outstanding.
	Interest expense relating to the amortization of deferred financing costs amounted to $3,973 in 2014, $0 in 2013 and $15,260 in 2012. The 2012 interest expense includes the write-off of $12,540 in deferred financing costs relating to the $900,000 Unsecured Forward Start credit facility as the Company’s Chapter 11 filing effectively terminated this credit facility agreement.
Revenue and Expense Recognition [Policy Text Block]	7	Revenue and expense recognition—Revenues from time charters and bareboat charters are accounted for as operating leases and are thus recognized ratably over the rental periods of such charters, as service is performed. Voyage revenues and expenses are recognized ratably over the estimated length of each voyage, calculated on a discharge-to-discharge basis and, therefore, are allocated between reporting periods based on the relative transit time in each period. The impact of recognizing voyage expenses ratably over the length of each voyage is not materially different on a quarterly and annual basis from a method of recognizing such costs as incurred. OSG does not begin recognizing voyage revenue until a Charter has been agreed to by both the Company and the customer, even if the vessel has discharged its cargo and is sailing to the anticipated load port on its next voyage.
	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 paid by the Company’s customers.
	For the Company’s vessels operating in pools, revenues and voyage expenses are pooled and allocated to each pool’s participants on a time charter equivalent (“TCE”) basis in accordance with an agreed-upon formula. Such TCE revenues are reported as pool revenues in the accompanying consolidated statement of operations. For the pools in which the Company participates, management monitors, among other things, the relative proportion of the Company’s vessels operating in each of the pools to the total number of vessels in each of the respective pools, and assesses whether or not OSG’s participation interest in each of the pools is sufficiently significant so as to determine that OSG has effective control of the pool. Management determined that as of June 30, 2013, it had effective control of one of the pools in which the Company participated. Such pool is not a legal entity but operates under a contractual agreement. Therefore, effective July 1, 2013 and through to June 30, 2014, when the Company exited this pool, the Company’s allocated TCE revenues for such pool were reported on a gross basis as voyage charter revenues and voyage expenses in the consolidated statement of operations. The impact of this method of presenting earnings for this pool was an increase in both voyage charter revenues and voyage expenses of $40,454 and $70,817 for the years ended December 31, 2014 and 2013, respectively.
Concentration Risk, Credit Risk, Policy [Policy Text Block]		8	Concentration of Credit Risk—Financial instruments that potentially subject the Company to concentrations of credit risk are voyage receivables due from charterers and pools in which the Company participates. With respect to voyage receivables, the Company limits its credit risk by performing ongoing credit evaluations. Voyage receivables reflected in the consolidated balance sheets as of December 31, 2014 and 2013 are net of an allowance for doubtful accounts of $352 and $2,024, respectively. The provisions for doubtful accounts for the years ended December 31, 2014, 2013 and 2012 were not material.
	During the three years ended December 31, 2014, the Company did not have any individual customers who accounted for 10% or more of its revenues apart from the pools in which it participates. The pools in which the Company participates accounted for 77% and 58% of consolidated voyage receivables at December 31, 2014 and 2013, respectively. During the year ended December 31, 2014, the Company increased both the number of vessels placed in pools for commercial management and the number of pools in which it participates.
Derivatives, Policy [Policy Text Block]		9	Derivatives—ASC 815, Derivatives and Hedging, requires the Company to recognize all derivatives on the balance sheet at fair value. Derivatives that are not effective hedges must be adjusted to fair value through earnings. If the derivative is an effective hedge, depending on the nature of the hedge, a change in the fair value of the derivative is either offset against the change in fair value of the hedged item (fair value hedge), or recognized in other comprehensive income/(loss) and reclassified into earnings in the same period or periods during which the hedge transaction affects earnings (cash flow hedge). The ineffective portion (that is, the change in fair value of the derivative that does not offset the change in fair value of the hedged item) of an effective hedge and the full amount of the change in fair value of derivative instruments that do not qualify for hedge accounting are immediately recognized in earnings.
	The Company formally documents all relationships between hedging instruments and hedged items, as well as its risk-management objective and strategy for undertaking various hedge transactions. This process includes linking all derivatives that are designated as cash flow hedges to forecasted transactions. The Company also formally assesses (both at the hedge's inception and on an ongoing basis) whether the derivatives that are used in hedging transactions have been highly effective in offsetting changes in the cash flows of hedged items and whether those derivatives may be expected to remain highly effective in future periods. When it is determined that a derivative is not (or has ceased to be) highly effective as a hedge, the Company discontinues hedge accounting prospectively, as discussed below.
	The Company discontinues hedge accounting prospectively when (1) it determines that the derivative is no longer effective in offsetting changes in the cash flows of a hedged item such as forecasted transactions; (2) the derivative expires or is sold, terminated, or exercised; (3) it is no longer probable that the forecasted transaction will occur; or (4) management determines that designating the derivative as a hedging instrument is no longer appropriate or desired.
	When the Company discontinues hedge accounting because it is no longer probable that the forecasted transaction will occur in the originally expected period, the gain or loss on the derivative remains in accumulated other comprehensive income and is reclassified into earnings when the forecasted transaction affects earnings. However, if it is probable that a forecasted transaction will not occur by the end of the originally specified time period or within an additional two-month period of time thereafter, the gains and losses that were accumulated in other comprehensive income will be recognized immediately in earnings. In all situations in which hedge accounting is discontinued and the derivative remains outstanding, the Company will carry the derivative at its fair value on the balance sheet, recognizing changes in the fair value in current-period earnings, unless it is designated in a new hedging relationship.
	During the year ended December 31, 2014, no ineffectiveness gains or losses were recorded in earnings relative to interest rate caps entered into by the Company or its subsidiaries that qualified for hedge accounting. Any gain or loss realized upon the early termination of an interest rate cap is recognized as an adjustment of interest expense over the shorter of the remaining term of the cap or the hedged debt. See Note 11, “Fair Value of Financial Instruments, Derivatives and Fair Value Disclosures,” for additional disclosures on the Company’s interest rate caps and other financial instruments.
Income Tax, Policy [Policy Text Block]		10	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 OSG 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, on the basis of a two-step process whereby (1) the Company first determines whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position and (2) those tax positions that meet the more-likely-than-not recognition threshold, the Company recognizes the largest amount of tax benefit that is greater than 50% likely to be realized upon ultimate settlement with the related tax authority.
Use of Estimates, Policy [Policy Text Block]		11	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 goodwill, intangible and other long-lived assets, liabilities incurred relating to pension benefits, liabilities subject to compromise and income taxes. Actual results could differ from those estimates.
Consolidation, Subsidiary Stock Issuances, Policy [Policy Text Block]		12	Issuance of shares or units by subsidiaries—The Company accounts for gains or losses from the issuance of shares or units by its subsidiaries as an adjustment to equity.
New Accounting Pronouncements, Policy [Policy Text Block]		13	Recently adopted accounting standards—In February 2013, the FASB issued ASU No. 2013-04, Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation is Fixed at the Reporting Date, which provides guidance for the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation within the scope of this guidance is fixed at the reporting date, except for obligations addressed within existing U.S. GAAP guidance. This accounting standard was effective for public entities for annual periods, and interim periods within those annual periods, beginning after December 31, 2013. The Company’s adoption of this new accounting guidance on January 1, 2014 did not have a significant impact on its consolidated financial statements.
	In July 2013, the FASB issued ASU No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists, to address the diversity in practice in presenting unrecognized tax benefits on the balance sheet. The standard provides explicit guidance requiring that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward, except when certain circumstances enumerated in the standard exist. The required presentation should better reflect the manner in which an entity would settle at the reporting date any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses or tax carryforwards exist. The amendments in this update were effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2013. The Company’s adoption of this new accounting guidance on January 1, 2014 did not have a significant impact on its consolidated financial statements.
New Accounting Standards [Policy Text Block]		14	Recently issued accounting standards— In April 2014, the FASB issued ASU No. 2014-08, Presentation of Financial Statements (ASC 205) and Property Plant and Equipment (ASC 360), which amends the criteria for reporting discontinued operations. The amendments require that only disposals that represent a strategic shift that has (or will have) a major effect on the entity’s operations and financial results would qualify as discontinued operations. Therefore disposals of small groups of assets that are recurring in nature are less likely to qualify for discontinued operations presentation as a result of the amendments. In addition, the new guidance expands the disclosure requirements for disposals that meet the definition of a discontinued operation and requires entities to disclose information about disposals of individually significant components that do not meet the definition of discontinued operations. The amendments are effective for public companies for annual periods and interim periods within those annual periods beginning after December 15, 2014. Early adoption is permitted, but only for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. The Company does not expect the adoption of the amendments to the accounting standards to have a significant impact on its consolidated financial statements.
	In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (ASC 606) to provide a single, comprehensive revenue recognition model for all contracts with customers to improve comparability within industries, across industries, and across capital markets. The revenue standard contains principles that an entity will apply to determine the measurement and timing of when it is recognized. The underlying principle is that an entity will recognize revenue to depict the transfer of goods or services to customers at an amount that the entity expects to be entitled to in exchange for those goods or services. The revenue standard is effective for the first interim period within annual reporting periods beginning after December 15, 2016 for public companies and early adoption is not permitted. The requirements of this standard include a significant increase in required disclosures. Management is analyzing the impact of the adoption of this guidance on its consolidated financial statements, including assessing changes that might be necessary to information technology systems, processes and internal controls to capture new data and address changes in financial reporting.
	In August 2014, the FASB issued ASU No. 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern (ASC 205) that explicitly requires management to assess an entity’s ability to continue as a going concern and disclose going concern uncertainties in connection with each annual and interim period. The new standard requires management to assess if there is substantial doubt about an entity’s ability to continue to meet its obligations within one year after the reporting date based upon management’s consideration of relevant conditions that are known (and reasonably knowable) at the issuance date. The new standard defines substantial doubt and provides example indicators. Disclosures will be required if conditions give rise to substantial doubt. However, management will need to assess if its plans will alleviate substantial doubt to determine the specific disclosures. The new standard will be effective for all entities in the first annual period ending after December 15, 2016. Earlier application is permitted. Management does not expect the adoption of this accounting standard to have a significant impact on its consolidated financial statements.

CHAPTER_11_FILING_AND_EMERGENC1

CHAPTER 11 FILING AND EMERGENCE FROM BANKRUPTCY (Tables)	12 Months Ended
	Dec. 31, 2014
Chapter 11 Filing Going Concern and Other Related Matters [Abstract]
Schedule of Debt [Table Text Block]	The table below presents changes to our debt outstanding, as a result of the Equity Plan effects:
			Debt as of				Debt				Debt as of
			December 31,		Less Debt		Reinstated or		Exit		December 31,
			2013  (a)		Repaid		Exchanged		Financing  (c)		2014
	Unsecured Revolving Credit Facility		$	1,489,000	$	-1,489,000	$	-	$	-	$	-
	8.125% Notes due 2018			300,000				300,000				300,000
	7.50% Notes due 2021			146,000				146,000				146,000
	through 2024
	8.75% Debentures due 2013			63,603		-63,603		-				-
	Secured Term Loans due			565,956		-565,956						-
	through 2023 (b)
	OBS Term Loan due 2019					-3,015				601,520		598,505
	OIN Term Loan due 2019					-3,142				627,304		624,162
			$	2,564,559	$	-2,124,716	$	446,000	$	1,228,824	$	1,668,667
	(a)	Debt (reflects add back of $2,909 of original issue discount) classified as liabilities subject to compromise at December 31, 2013.
	(b)	Debt was reported in liabilities subject to compromise net of Adequate Protection Interest Payments of $12,731, which had been classified as a reduction of debt through March 31, 2014.
	(c)	OBS and OIN Term Loan balances are net of unamortized original issue discounts as of December 31, 2014 of $1,480 and $1,071, respectively.
Schedule of Liabilities Subject To Compromise [Table Text Block]	Liabilities subject to compromise as of December 31, 2013 which were settled or reclassified during the year ended December 31, 2014:
					Change in
					Estimated
			December 31,		Allowed Claim		Cash				December 31,
	Liabilities Subject to Compromise		2013		2014		Payment		Reclassified  (a)		2014
	Pre-petition accounts payable and other accrued liabilities		$	4,565	$	21,748	$	-12,821	$	-13,492	$	-
	Secured long-term debt and accrued interest			569,408		20,577		-589,985		-		-
	Unsecured senior notes			500,780		8,823		-63,603		-446,000		-
	Unsecured revolving credit facility			1,489,000		-		-1,489,000		-		-
	Accrued interest on unsecured revolving credit facility and senior notes			10,878		167,909		-177,018		-1,769		-
	Derivative liabilities			3,566		186		-3,662		-90		-
	Accrued post-petition interest on other claims			-		880		-		-880		-
	Accrued liabilities related to rejected executory contracts			282,599		14,550		-296,958		-191		-
	Pension and other postretirement benefit plan liabilities			27,377		-1,257		-14,429		-11,691		-
	Total liabilities subject to compromise		$	2,888,173	$	233,416	$	-2,647,476	$	-474,113	$	-
		(a)	Amounts reclassified included $16,231 to accounts payable, accrued expenses and other current liabilities, $446,000 to long-term debt relating to the Unsecured Senior Notes and $11,882 to other liabilities.
Schedule of Reorganization Items Net [Table Text Block]	Reorganization items, net represent amounts incurred subsequent to the bankruptcy filing as a direct result of the filing of the Chapter 11 Cases and are comprised of the following:
	For the year ended December 31,		2014		2013		2012
	Trustee fees		$	2,751	$	3,006	$	672
	Professional fees			112,678		62,823		7,889
	Provision for and expenses incurred on rejected executory			6,864		256,522		30,187
	contracts including post-petition interest
	Deferred financing fees write-off			-		4,603		2,365
	Provision for post-petition interest on debt facilities			15,416		-		-
	Provision for post-petition interest on claims			1,073		-		-
	2004 Stock Incentive Plan			1,796		-		-
	Provision for class action lawsuit and other subordinated claims			17,000		-		-
	Other claim adjustments			13,895		216		-
			$	171,473	$	327,170	$	41,113

EARNINGS_PER_COMMON_SHARE_Tabl

EARNINGS PER COMMON SHARE (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The components of the calculation of basic earnings per share and diluted earnings per share are as follows:
	For the year ended December 31,		2014		2013		2012
	Net loss		$	-152,273	$	-638,230	$	-480,114
	Weighted average common shares outstanding:
	Common stock - basic and diluted					30,482,818		30,339,258
	Class A Common stock - basic and diluted (1)			212,507,963
	Class B Common stock - basic and diluted (2)			21,372,197
	-1	The weighted average common shares outstanding for Class A Common Stock basic and diluted was calculated using no Class A Common Stock and no Class A Warrants outstanding for the period January 1, 2014 through August 4, 2014. 310,419,766 Class A Common Stock and 210,153,431 Class A Warrants were used in calculating the weighted average common shares outstanding for the period August 5, 2014 through December 31, 2014.
	-2	The weighted average common shares outstanding for Class B Common Stock basic and diluted was calculated using the common shares outstanding for each of the years in the two year period ended December 31, 2013 and for the period January 1, 2014 through August 4, 2014 and Class B Common Stock outstanding and Class B Warrants outstanding for the period August 5, 2014 through December 31, 2014. As of December 31, 2014 there are 2,908,149 Class B Warrants outstanding.

BUSINESS_AND_SEGMENT_REPORTING1

BUSINESS AND SEGMENT REPORTING (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Information about the Company’s reportable segments as of and for each of the years in the three year period ended December 31, 2014 follows:
		International
		Crude		Product
		Tankers		Carriers		Other		U.S.		Totals
	2014
	Shipping revenues	$	363,331	$	153,665	$	22	$	440,416	$	957,434
	Time charter equivalent revenues		228,295		118,669		22		414,373		761,359
	Depreciation and amortization		56,210		26,850		2,114		66,584		151,758
	Gain/(loss) on disposal of vessels,
	including impairments		8,017		-44		1,970		589		10,532
	Income/(loss) from vessel operations		65,532		3,429		-1,877		121,649		188,733
	Equity in income of affiliated companies		30,925		-		7,040		3,390		41,355
	Investments in and advances to affiliated companies at December 31, 2014		277,816		11,334		42,286		3,427		334,863
	Total assets at December 31, 2014		1,191,490		551,693		42,286		1,052,056		2,837,525
	Expenditures for vessels		1,437		20,017		-		10,958		32,412
	Payments for drydockings		5,286		6,792		-		25,739		37,817
	2013
	Shipping revenues		352,871		229,202		3,286		430,637		1,015,996
	Time charter equivalent revenues		209,876		149,349		3,225		400,878		763,328
	Depreciation and amortization		76,086		30,226		2,818		67,146		176,276
	Gain/(loss) on disposal of vessels, including impairments		-328,146		-38,395		117		1,167		-365,257
	Goodwill and other intangibles impairment charge		-16,214		-		-		-		-16,214
	Income/(loss) from vessel operations		-17,806		22,510		-3,104		113,433		115,033
	Equity in income of affiliated companies		29,746		-		7,542		3,606		40,894
	Investments in and advances to affiliated companies at December 31, 2013		271,009		4,505		44,278		3,535		323,327
	Total assets at December 31, 2013		1,356,796		565,387		44,591		1,040,541		3,007,315
	Expenditures for vessels		26,106		7,619		-3		2,655		36,377
	Payments for drydockings		8,003		2,270		-		11,751		22,024
	2012
	Shipping revenues		343,541		332,922		10,156		450,515		1,137,134
	Time charter equivalent revenues		256,843		172,356		10,071		401,576		840,846
	Depreciation and amortization		83,558		43,577		5,392		68,757		201,284
	Gain/(loss) on disposal of vessels		-102,242		-160,706		8,085		-16,496		-271,359
	Income/(loss) from vessel operations		-70,909		-59,378		-4,243		118,664		-15,866
	Equity in income/(loss) of affiliated companies		18,658		-		11,378		3,450		33,486
	Investments in and advances to affiliated companies at December 31, 2012		241,198		6,000		1,700		3,500		252,398
	Total assets at December 31, 2012		1,739,740		642,379		2,333		1,101,720		3,486,172
	Expenditures for vessels		33,488		18,567		6		543		52,604
	Payments for drydockings		20,063		7,166		-		18,761		45,990
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	Reconciliations of time charter equivalent revenues of the segments to shipping revenues as reported in the consolidated statements of operations follow:
	For the year ended December 31,	2014		2013		2012
	Time charter equivalent revenues	$	761,359	$	763,328	$	840,846
	Add: Voyage expenses		196,075		252,668		296,288
	Shipping revenues	$	957,434	$	1,015,996	$	1,137,134
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	Reconciliations of income/(loss) from vessel operations of the segments to loss before reorganization items and income taxes, as reported in the consolidated statements of operations follow:
	For the year ended December 31,	2014		2013		2012
	Total income (loss) from vessel operations of all segments	$	188,733	$	115,033	$	-15,866
	General and administrative expenses		-83,716		-97,663		-88,845
	Technical management transition costs		-3,427		-		-
	Severance and relocation costs		-17,020		-3,097		-3,163
	Goodwill and other intangibles impairment charge		-		-16,214		-
	Gain/(loss) on disposal of vessels, including impairments		10,532		-365,257		-271,359
	Consolidated income/(loss) from vessel operations		95,102		-367,198		-379,233
	Equity in income of affiliated companies		41,355		40,894		33,486
	Other income (expense)		426		849		-1,314
	Interest expense		-232,491		-350		-93,421
	Loss before reorganization items and income taxes	$	-95,608	$	-325,805	$	-440,482
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	Reconciliations of total assets of the segments to amounts included in the consolidated balance sheets follow:
	At December 31,	2014		2013
	Total assets of all segments	$	2,837,525	$	3,007,315
	Corporate cash and cash equivalents		389,226		601,927
	Restricted cash		123,178		-
	Other unallocated amounts		86,562		35,252
	Consolidated total assets	$	3,436,491	$	3,644,494
Revenue Source and Long Lived Assets Deployment by Segment [Table Text Block]	Certain additional information about the Company’s operations for each of the years in the three year period ended December 31, 2014 follows:
				International
		Consolidated		Flag		U.S. Flag
	2014
	Shipping revenues	$	957,434	$	517,018	$	440,416
	Total vessels, deferred drydock and other property at
	31-Dec-14		2,275,630		1,348,044		927,586
	2013
	Shipping revenues		1,015,996		585,359		430,637
	Total vessels, deferred drydock and other property at
	31-Dec-13		2,416,600		1,466,970		949,630
	2012
	Shipping revenues		1,137,134		686,619		450,515
	Total vessels, deferred drydock and other property at
	31-Dec-12		2,911,706		1,911,228		1,000,478

VESSELS_DEFERRED_DRYDOCK_AND_O1

VESSELS, DEFERRED DRYDOCK AND OTHER PROPERTY (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Table Text Block]	Vessels and other property consist of the following:
	As of December 31,		2014		2013
	Vessels, at cost		$	2,804,179	$	2,784,023
	Accumulated depreciation			-603,603		-495,391
	Vessels, net			2,200,576		2,288,632
	Construction in progress			-		54,644
	Other property, at cost			34,360		45,633
	Accumulated depreciation and amortization			-21,719		-29,557
	Other property, net			12,641		16,076
	Total Vessels and other property		$	2,213,217	$	2,359,352
Schedule of Property Plant and Equipment by Segment [Table Text Block]	A breakdown of the carrying value of the Company’s vessels, excluding construction in progress, by reportable segment and fleet as of December 31, 2014 and 2013 follows:
	As of December 31, 2014
										Average
							Net			Vessel		Number of
					Accumulated		Carrying			Age		Owned
			Cost		Depreciation		Value			(by dwt)		Vessels
	International Flag Crude Tankers
	VLCCs (includes ULCC)		$	681,743	$	-187,139	$	494,604			10.1		9
	Aframaxes			269,728		-66,800		202,928			9.6		7
	Panamaxes			128,564		-7,046		121,518			12.3		8
	Total International Flag Crude Tankers			1,080,035		-260,985		819,050	(1), (4)		10.3		24
	International Flag Product Carriers
	Aframax			73,681		-1,191		72,490			0.4		1
	Panamax			196,472		-39,519		156,953			6.1		4
	Handysize			297,928		-39,879		258,049			9.8		14
	Total International Flag Product Carriers			568,081		-80,589		487,492	(2), (4)		7.7		19
	Total U.S. Flag Vessels			1,156,063		-262,029		894,034	-3		7.4		14
	Fleet Total		$	2,804,179	$	-603,603	$	2,200,576			9.5		57
		-1	Includes one ULCC, eight VLCCs, seven Aframaxes and seven Panamaxes that are pledged as collateral under both the OIN Revolver Facility due on February 5, 2019 and the OIN Secured Term Loan due on August 5, 2019 with an aggregate carrying value of $802,604.
		-2	Includes one Aframax, four Panamaxes and 13 Handysize Product Carriers that are pledged as collateral under both the OIN Revolver Facility and the OIN Secured Term Loan with an aggregate carrying value of $478,473.
		-3	Includes one Handysize Product Carrier and eight ATB tug barge units that are pledged as collateral under the OBS ABL Facility due on February 5, 2019 and three Handysize Product Carriers that are pledged as collateral under the OBS Term Loan due on August 5, 2019. The OBS Term Loan has a second lien on the vessels pledged under the OBS ABL Facility and the OBS ABL Facility has a second lien on the vessels pledged under the OBS Term Loan. Vessels pledged as
			collateral under the OBS Term Loan and OBS ABL Facility have aggregate carrying values of $526,036. (See Note 10, “Debt,” to these consolidated financial statements for additional information regarding secured loan facilities).
		-4	The International Flag Crude Tankers segment and the International Flag Product Carriers segment include vessels with an aggregate carrying value of $399,529 and $303,182, respectively, which the Company believes exceeds their aggregate market values of approximately $343,167 and $223,000, by $56,362 and $80,182, respectively.
	As of December 31, 2013
							Net			Average		Number of
					Accumulated		Carrying			Vessel Age		Owned
			Cost		Depreciation		Value			(by dwt)		Vessels
	International Flag Crude Tankers
	VLCCs (includes ULCC)		$	722,863	$	-164,911	$	557,952			10.5		11
	Aframaxes (includes OSG Lightering fleet)			279,506		-57,403		222,103			10.7		9
	Panamaxes			145,168		-		145,168			11.1		9
	Total International Flag Crude Tankers			1,147,537		-222,314		925,223			10.6		29
	International Flag Product Carriers
	Panamax			196,470		-31,856		164,614			5.1		4
	Handysize			297,565		-26,602		270,963			8.8		14
	Total International Flag Product Carriers			494,035		-58,458		435,577			7.6		18
	Total U.S. Flag Vessels			1,142,451		-214,619		927,832			6.4		14
	Fleet Total		$	2,784,023	$	-495,391	$	2,288,632			9.8		61
Vessels [Member]
Schedule of Property Plant and Equipment by Segment [Table Text Block]	Vessel activity, excluding construction in progress, for the three years ended December 31, 2014 is summarized as follows:
					Accumulated		Net Book
			Vessel Cost		Depreciation		Value
	Balance at December 31, 2011		$	3,776,344	$	-818,555	$	2,957,789
	Purchases and vessel additions			7,983		-
	Transfers from construction in progress			189,105		-
	Disposals and transfers to held for sale			-29,653		25,104
	Depreciation			-		-154,997
	Impairment			-635,966		357,192
	Balance at December 31, 2012			3,307,813		-591,256		2,716,557
	Purchases and vessel additions			2,809		-
	Transfers from construction in progress			71,553		-
	Disposals			-4,951		1,837
	Depreciation			-		-133,197
	Impairment			-593,201		227,225
	Balance at December 31, 2013			2,784,023		-495,391		2,288,632
	Purchases and vessel additions			27,236		-
	Transfers from construction in progress			62,475		-
	Disposals			-69,555		4,808
	Depreciation			-		-113,020
	Balance at December 31, 2014		$	2,804,179	$	-603,603	$	2,200,576
Drydock [Member]
Schedule of Property Plant and Equipment by Segment [Table Text Block]	Drydocking activity for the three years ended December 31, 2014 is summarized as follows:
	For the year ended December 31,		2014		2013		2012
	Balance at January 1		$	57,248	$	74,418	$	66,023
	Payments for drydocking			37,817		22,024		45,990
	Sub-total			95,065		96,442		112,013
	Drydock amortization			-30,288		-32,648		-34,382
	Amounts recognized upon sale/redelivery of vessels and non-cash adjustments			-2,364		-6,546		-2,605
	Impairments			-		-		-608
	Balance at December 31		$	62,413	$	57,248	$	74,418

EQUITY_METHOD_INVESTMENTS_Tabl

EQUITY METHOD INVESTMENTS (Tables)	12 Months Ended
	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments Summarized Balance Sheet Information [Table Text Block]	A condensed summary of the combined assets and liabilities of the equity method investments follows:
	As of December 31,	2014		2013
	Current assets	$	165,931	$	197,625
	Vessels, net		1,512,559		1,576,692
	Other assets		57,982		53,274
	Total assets	$	1,736,472	$	1,827,591
	Current liabilities	$	155,408	$	179,913
	Long-term debt and other non-current liabilities		1,415,798		1,548,484
	Equity		165,266		99,194
	Total liabilities and equity	$	1,736,472	$	1,827,591
Results of Operations of Equity Method Investments [Table Text Block]	A condensed summary of the results of operations of the equity method investments follows:
	For the year ended December 31,	2014		2013		2012
	Shipping revenues	$	383,424	$	384,040	$	368,802
	Ship operating expenses		-249,704		-248,924		-240,950
	Income from vessel operations		133,720		135,116		127,852
	Other expense		-1,735		-1,588		-1,419
	Interest expense		-51,024		-54,007		-65,936
	Net income	$	80,961	$	79,521	$	60,497

VARIABLE_INTEREST_ENTITIES_VIE1

VARIABLE INTEREST ENTITIES ("VIEs") (Tables)	12 Months Ended
	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Variable Interest Entities [Table Text Block]	The following table presents the carrying amounts of assets and liabilities in the balance sheet related to the VIEs described above as of December 31, 2014 and 2013:
	Consolidated Balance Sheet as of December 31,	2014		2013
	Investments in Affiliated Companies	$	276,856	$	275,261
Schedule of Variable Interest Entities Liability in Condensed Consolidated Balance Sheet to Maximum Exposure To Loss [Table Text Block]	The table below compares the Company’s liability in the consolidated balance sheet to the maximum exposure to loss at December 31, 2014.
		Consolidated Balance Sheet		Maximum Exposure to Loss
	Other Liabilities	$	-	$	356,400

INTANGIBLE_ASSETS_Tables

INTANGIBLE ASSETS (Tables)	12 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Indefinite-Lived Intangible Assets [Table Text Block]	Intangible assets activity for three years ended December 31, 2014 is summarized as follows:
		International
		Crude
		Tankers		U.S. Flag
		Segment		Segment		Other		Total
	Balance at January 1, 2012	$	7,625	$	69,277	$	256	$	77,158
	Amortization		-500		-4,667		-16		-5,183
	Balance at December 31, 2012		7,125		64,610		240		71,975
	Amortization		-500		-4,667		-16		-5,183
	Impairment loss		-6,625		-		-		-6,625
	Balance at December 31, 2013		-		59,943		224		60,167
	Amortization		-		-5,126		-224		-5,350
	Balance at December 31, 2014	$	-	$	54,817	$	-	$	54,817

DEBT_Tables

DEBT (Tables)	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments [Table Text Block]	Debt consists of the following:
	As of  December 31,		2014(1)			2013 (2)
	OBS term loan, net of unamortized discount of $1,480		$	598,505		$	-
	OIN term loan, net of unamortized discount of $1,071			624,162			-
	8.125% notes due 2018, net of unamortized discount of $2,898 (2013)			300,000			297,102
	7.50% notes due 2024			784			146,000
	7.50% Election 1 notes due 2021			6,508			-
	7.50% Election 2 notes due 2021			138,708			-
	Unsecured revolving credit facility			-			1,489,000
	8.75% Debentures due 2013, net of unamortized discount of $11 (2013)			-			63,592
	Floating rate secured term loans, due 2016 through 2023			-			565,956
	Total debt			1,668,667			2,561,650
	Less current portion			12,314			-
	Long-term portion		$	1,656,353		$	2,561,650
	-1	The weighted average effective interest rate for debt outstanding as of December 31, 2014 was 6.21%.
	-2	Classified as liabilities subject to compromise as of December 31, 2013.
Schedule of Exit Financing Facility [Table Text Block]	The applicable margins and floor interest rates for each Exit Financing Facility is as follows:
	Flag		US Flag											International Flag
	Facility		OBS					OBS						OIN						OIN
			ABL Facility					Term Loan						Term Loan						Revolver Facility
	Rate		ABR		LIBOR			ABR			LIBOR			ABR			LIBOR			ABR			LIBOR
	Floor		None		None				2	%		1	%		2	%		1	%		2	%		1	%
	Applicable Margin		1.25%-1.75%		2.25%-2.75%				3.25	%		4.25	%		3.75	%		4.75	%		3.5	%		4.5	%
Schedule of Unsecured Debt [Table Text Block]	The table also summarizes total contractual interest paid for those periods:
			For the year ended
			December 31, 2014
			Unsecured			Unsecured
			Revolving			Senior
			Credit Facility			Notes
	Contractual Interest (including default interest)		$	78,625		$	92,220
	Reorganization expense			-			14,181
			$	78,625		$	106,401
	For the year ended December 31, 2013 no interest expense was recorded relating to the Unsecured Revolving Credit Facility and the Unsecured Senior Notes.
			For the year ended
			December 31, 2012
			Unsecured			Unsecured
			Revolving			Senior
			Credit Facility			Notes
	Contractual Interest		$	13,218		$	36,825
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]	The aggregate annual principal payments required to be made on debt are as follows:
	As of December 31, 2014
	2015		$	12,314
	2016			12,314
	2017			12,314
	2018			312,314
	2019			1,175,963
	Thereafter			146,000
			$	1,671,219

FAIR_VALUE_OF_FINANCIAL_INSTRU1

FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES (Tables)	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping [Table Text Block]	The estimated fair values of the Company’s financial instruments, other than derivatives that are not measured at fair value on a recurring basis, categorized based upon the fair value hierarchy, at December 31, 2014 and 2013, are as follows:
			Fair Value			Level 1			Level 2
	December 31, 2014:
	Cash (1)		$	512,404		$	512,404		$	-
	8.125% notes due 2018			-294,300			-			-294,300
	7.5% notes due 2024			-626			-			-626
	7.5% Election 1 notes due 2021			-5,511			-			-5,511
	7.5% Election 2 notes due 2021			-131,773			-			-131,773
	OBS Term loan			-589,863			-			-589,863
	OIN Term loan			-618,981			-			-618,981
	December 31, 2013:
	Cash and cash equivalents		$	601,927		$	601,927		$	-
	Unsecured Senior Notes		$	-559,441		$	-		$	-559,441
	(1) Includes restricted cash of $123,178.
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	Fair Values of Derivative Instruments:
			Asset Derivatives						Liability Derivatives
			Balance Sheet						Balance Sheet
	December 31, 2014		Location			Amount			Location			Amount
	Derivatives designated as hedging instruments:
	Interest rate caps:
	Long-term portion		Other assets		$	2,115		Other liabilities		$	-
	Total derivatives designated as hedging instruments					2,115					-
	Total derivatives not designated as hedging instruments				$	-				$	-
	Total derivatives				$	2,115				$	-
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The effect of cash flow hedging relationships recognized in other comprehensive income/(loss) excluding amounts reclassified from accumulated other comprehensive income (effective portion), including hedges of equity method investees, for the years ended December 31, 2014, 2013 and 2012 follows:
	For the year ended December 31,		2014			2013			2012
	Interest rate swaps		$	-21,372		$	19,114		$	-20,709
	Interest rate caps			-478			-			-
	Total		$	-21,850		$	19,114		$	-20,709
	The effect of cash flow hedging relationships on the consolidated statements of operations is presented excluding hedges of equity method investees. The Company’s interest rate cap agreements had no effect on the consolidated statement of operations for the year ended December 31, 2014. The effect of the Company’s cash flow hedging relationships on the consolidated statement of operations for the year ended 2012 is shown below:
			Statement of Operations
			Effective Portion of Gain/(Loss)
			Reclassified from
			Accumulated Other Comprehensive
			Loss					Ineffective Portion
	For the year ended				Amount of					Amount of
	31-Dec-12		Location		Gain/(Loss)			Location		Gain/(Loss)
	Interest rate swaps		Interest expense		$	-7,697		Interest expense		$	-
	Total				$	-7,697				$	-
Derivative Instruments, Gain (Loss) [Table Text Block]	The effect of the gain/(loss) recognized on derivatives not designated as hedging instruments on the consolidated statements of operations, excluding hedges of equity method investees, for the years ended December 31, 2014, 2013 and 2012 are as follows:
	For the year ended December 31,				2014			2013			2012
			Location
	FFAs and bunker swaps		Other income/(expense)		$	-		$	-		$	1,376
	Total				$	-		$	-		$	1,376
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The following tables present the fair values, which are pre-tax, for assets and liabilities measured on a recurring basis (excluding investments in affiliated companies):
			Fair Value			Level 1			Level 2
	Assets/(Liabilities) at December 31, 2014:
	Derivative Assets (interest rate caps)		$	2,115		$	-		$	2,115	-1
	-1	For interest rate caps, fair values are derived using valuation models that utilize the income valuation approach. These valuation models take into account contract terms such as maturity, as well as other inputs such as interest rate yield curves and creditworthiness of the counterparty and the Company.
Fair Value Measurements, Nonrecurring [Table Text Block]	The following table summarizes the fair values of items measured at fair value on a nonrecurring basis for the year ended December 31, 2013 (there were none for 2014):
												Total
												Impairment
	Description		Fair Value			Level 2			Level 3			Charges
	Assets for the year ended December 31, 2013:
	International Crude Tankers impairment
	Vessels held for use(1)		$	359,252		$	359,252		$	-		$	-327,675
	Other fixed assets held for use(2)		$	750		$	-		$	750		$	-462
	Intangible assets (2)		$	-		$	-		$	-		$	-6,625
	Goodwill(3)		$	-		$	-		$	-		$	-9,589
	International Product Carriers impairment
	Vessels held for use(1)		$	67,947		$	67,947		$	-		$	-38,301
		-1	Aggregate pre-tax impairment charges of $365,976 were recorded in the fourth quarter of 2013, related to 15 vessels held for use in the International Crude Tanker and International Product Carriers segments. The fair value measurement used to determine the impairment for the vessels held for use was based upon a market approach, which utilized the expected sales prices of the vessels obtained from third party appraisals. Because sales of vessels occur somewhat infrequently, the expected sales prices are considered to be Level 2.
		-2	Aggregate pre-tax impairment charges of $7,087 were recorded in the fourth quarter of 2013, including $6,625 related to customer relationship intangible assets and $462 related to transportation equipment held for use in the International Crude Tanker's Lightering business. The fair value measurement used to determine the impairment for the intangible assets and equipment held for use was based upon the income approach, which utilized cash flow projections consistent with the most recent projections of the Company, and a discount rate equivalent to a market participant's weighted average cost of capital. Because the Company uses its own cash flow projections, the cash flow projections are considered to be Level 3.
		-3	Aggregate pre-tax impairment charges of $9,589 were recorded in the fourth quarter of 2013, related to goodwill of the International Crude Tanker's Lightering business. The fair value measurement used to determine the impairment for goodwill was based upon the income approach, which utilized cash flow projections consistent with the most recent projections of the Company, and a discount rate equivalent to a market participant's weighted average cost of capital. Because the Company uses its own cash flow projections, the cash flow projections are considered to be Level 3.

ACCOUNTS_PAYABLE_ACCRUED_EXPEN1

ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2014
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accounts Payable Accrued Liabilities And Other Liabilities Disclosure [Table Text Block]	Accounts payable, accrued expenses and other current liabilities follows:
	At December 31,	2014		2013
	Accounts payable	$	4,422	$	22,002
	Payroll and benefits		19,060		30,589
	Interest		21,218		-
	Due to owners on chartered in vessels		3,776		3,452
	Accrued drydock and repair costs		1,983		4,335
	Bunkers and lubricants		1,626		7,907
	Charter revenues received in advance		15,693		18,682
	Insurance		920		573
	Accrued vessel expenses		4,233		7,529
	Bankruptcy claims accruals		13,506		-
	Accrued general and administrative expenses		6,895		16,380
	Other		2,734		10,133
		$	96,066	$	121,582

TAXES_Tables

TAXES (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	The components of loss before income taxes follow:
	For the year ended December 31,	2014			2013			2012
	Foreign	$	455,565		$	-662,480		$	-484,306
	Domestic		-722,646			9,505			2,711
		$	-267,081		$	-652,975		$	-481,595
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	The components of the income tax (provisions)/benefits follow:
	For the year ended December 31,	2014			2013			2012
	Current	$	32,376		$	7,347		$	-28,270
	Deferred		82,432			7,398			29,751
		$	114,808		$	14,745		$	1,481
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	The significant components of the Company’s deferred tax liabilities and assets follow:
	As of December 31,	2014			2013
	Deferred tax liabilities:
	Vessels and other property	$	289,229		$	290,620
	Unremitted earnings of foreign subsidiaries		-			55,602
	Prepaid expenditures		15,816			12,010
	Post-petition interest expense		-			35,368
	Other—net		9,635			9,966
	Total deferred tax liabilities		314,680			403,566
	Deferred tax assets:
	Loss carryforwards		26,419			17,052
	Employee compensation and benefit plans		14,263			32,403
	Financing and professional fees		4,386			832
	Accrued expenses and other		5,185			2,266
	Total deferred tax assets		50,253			52,553
	Valuation allowance		13,538			13,477
	Net deferred tax assets		36,715			39,076
	Net deferred tax liabilities	$	277,965		$	364,490
	These amounts are classified in the balance sheet as follows:
	Current deferred tax assets	$	-5,312		$	-5,464
	Noncurrent deferred tax liabilities		283,277			369,954
	Net deferred tax liabilities	$	277,965		$	364,490
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Reconciliations of the effective income tax rate attributable to pretax results and the U.S. statutory income tax rate follow:
	For the year ended December 31,	2014				2013				2012
	U.S. federal statutory income tax rate		35	%			35	%			35	%
	Adjustments due to:
	Foreign income not subject to tax(1)		59.7	%			-36.2	%			-31.3	%
	State taxes, net of federal benefit		0.6	%			0.5	%			-1.8	%
	Interest on unrecognized tax benefits		-3.4	%			4.9	%			-1.1	%
	Nondeductible reorganization costs		-6.7	%			-1.4	%			-0.4	%
	Foreign income and repatriations taxed in the U.S.		-0.9	%			-1.6	%			1.7	%
	Unremitted earnings of foreign subsidiaries		20.8	%			-				-
	Deferred compensation		-1.9	%			-				-
	Tax examination settlement		1.9	%			-				-
	Payments as guarantor		-62.6	%			-				-
	Change in tax status of subsidiary		-				0.9	%			-0.1	%
	U.S. income subject to tonnage tax		0.8	%			0.4	%			-0.6	%
	Other		-0.3	%			-0.2	%			-1.1	%
	Effective tax rate		43	%			2.3	%			0.3	%
	(1) In 2014, includes cancellation of indebtedness income associated with payments as guarantor which is separately reflected in the reconciliation of the effective income tax rate.
Summary of Income Tax Contingencies [Table Text Block]	The following is a tabular reconciliation of the total amounts of unrecognized tax benefits (excluding interest and penalties):
		2014			2013
	Balance of unrecognized tax benefits as of January 1,	$	391,830		$	374,826
	Increases for positions taken in prior years		2,876			59
	Decreases for positions taken in prior years		-			-14,240
	Increases for positions related to the current year		180,509			31,838
	Amounts of decreases related to settlements		-354,886			-
	Reductions due to lapse of statutes of limitations		-5,001			-653
	Balance of unrecognized tax benefits as of December 31,	$	215,328		$	391,830

CAPITAL_STOCK_AND_STOCK_COMPEN1

CAPITAL STOCK AND STOCK COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]	Activity with respect to restricted common stock and restricted stock units under all plans during the three years ended December 31, 2014 is summarized as follows:
	Activity for the three years ended December 31, 2014	Class A Common Stock		Common Stock
	Nonvested Shares Outstanding at December 31, 2011				509,060
	Granted				446,409
	Vested ($39.41 to $64.92 per share)				-159,530
	Forfeited				-15,345
	Nonvested Shares Outstanding at December 31, 2012				780,594
	Vested ($10.00 to $43.40 per share)				-155,932
	Forfeited				-379,163
	Nonvested Shares Outstanding at December 31, 2013		-		245,499
	Granted		521,346		-
	Vested ($10.00 to $43.40 per share)		-		-82,722
	Forfeited		-		-42,887
	Cancelled		-		-119,890
	Nonvested Shares Outstanding at December 31, 2014		521,346		-
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	Stock option activity under all plans during the three years ended December 31, 2014 is summarized as follows:
	Activity for the three years ended December 31, 2014	Class A Common Shares		Common Stock
	Options Outstanding at December 31, 2011				1,868,687
	Granted				377,653
	Forfeited				-41,559
	Exercised				-
	Options Outstanding at December 31, 2012				2,204,781
	Granted				-
	Forfeited				-1,523,825
	Exercised				-
	Options Outstanding at December 31, 2013		-		680,956
	Granted		453,586		-
	Forfeited		-		-39,848
	Exercised		-		-
	Cancelled		-		-641,108
	Options Outstanding at December 31, 2014		453,586		-
	Options Exercisable at December 31, 2014		-		-

ACCUMULATED_OTHER_COMPREHENSIV1

ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)	12 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The components of accumulated other comprehensive loss, net of related taxes, in the consolidated balance sheets follow:
	At December 31,		2014		2013
	Unrealized losses on derivative instruments, substantially entered into by the Company’s equity method joint venture investees		$	-61,547	$	-59,263
	Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement benefit plans)			-21,833		-10,081
			$	-83,380	$	-69,344
Comprehensive Income (Loss) [Table Text Block]
	The following tables present the changes in the balances of each component of accumulated other comprehensive loss, net of related taxes, for the three years ended December 31, 2014.
			Unrealized		Unrealized		Items not yet		Total
			gains/(losses)		losses on cash		recognized as a
			on available-		flow hedges		component of
			for-sale				net periodic
			securities				benefit cost
							(pension and
							other
							postretirement
							plans)
	Balance as of December 31, 2013		$	-	$	-59,263	$	-10,081	$	-69,344
	Current period change excluding amounts reclassified from accumulated other comprehensive income			-		-21,850		-11,969		-33,819
	Amounts reclassified from accumulated other comprehensive loss			-		19,566		217		19,783
	Total change in accumulated other comprehensive loss			-		-2,284		-11,752		-14,036
	Balance as of December 31, 2014		$	-	$	-61,547	$	-21,833	$	-83,380
	Balance as of December 31, 2012		$	49	$	-98,937	$	-14,893	$	-113,781
	Current period change excluding amounts reclassified from accumulated other comprehensive loss			-181		19,114		4,336		23,269
	Amounts reclassified from accumulated other comprehensive loss			132		20,560		476		21,168
	Total change in accumulated other comprehensive loss			-49		39,674		4,812		44,437
	Balance as of December 31, 2013		$	-	$	-59,263	$	-10,081	$	-69,344
	Balance as of December 31, 2011		$	34	$	-104,554	$	-14,787	$	-119,307
	Current period change excluding amounts reclassified from accumulated other comprehensive loss			-836		-20,709		-409		-21,954
	Amounts reclassified from accumulated other comprehensive loss			851		26,326		303		27,480
	Total change in accumulated other comprehensive loss			15		5,617		-106		5,526
	Balance as of December 31, 2012		$	49	$	-98,937	$	-14,893	$	-113,781
Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The following table presents information with respect to amounts reclassified out of accumulated other comprehensive loss for the three years ended December 31, 2014.
			Years Ended December 31,
	Accumulated Other Comprehensive Loss Component		2014		2013		2012		Statement of Operations
									Line Item
	Unrealized losses on available-for-sale securities:
	Impairment recorded relating to securities held by the Company's foreign subsidiaries		$	-	$	-132	$	-851	Other income/(expense)
	Unrealized losses on cash flow hedges:
	Interest rate swaps entered into by the Company's equity method joint venture investees			-19,566		-20,560		-20,864	Equity in income of affiliated companies
	Interest rate swaps entered into by the Company's subsidiaries			-		-		-7,697	Interest expense
	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			-260		-678		-526	General and
									administrative expenses
	Net periodic benefit costs associated with pension and postretirement benefit plans for seagoing employees			97		65		-24	Vessel expenses
				-19,729		-21,305		-29,962	Total before tax
				-54		137		2,482	Tax (provision) or benefit (1)
			$	-19,783	$	-21,168		-27,480	Total net of tax
	-1	The tax (provision)/benefit relates to the net periodic benefit costs of the Company's pension and postretirement  benefit plans as well as interest rate swaps entered into by the Company's domestic subsidiaries
Comprehensive Income Tax Expenses Benefits [Table Text Block]	The income tax expense/(benefit) allocated to each component of other comprehensive loss follows:
			Tax (expense)/		Tax (expense)/
			benefit on		benefit on items
			unrealized		not yet recognized
			gains/(losses) on		as a component of
			cash flow hedges		net periodic benefit
					cost
	For the year ended December 31, 2014
	Current period change excluding amounts reclassified from accumulated other comprehensive income		$	115	$	3,639
	Amounts reclassified from accumulated other comprehensive income			-		54
	Total change in accumulated other comprehensive loss		$	115	$	3,693
	For the year ended December 31, 2013
	Current period change excluding amounts reclassified from accumulated other comprehensive income		$	-	$	-2,899
	Amounts reclassified from accumulated other comprehensive income			-		-137
	Total change in accumulated other comprehensive loss		$	-	$	-3,036
	For the year ended December 31, 2012
	Current period change excluding amounts reclassified from accumulated other comprehensive income		$	131	$	118
	Amounts reclassified from accumulated other comprehensive income			-2,235		-247
	Total change in accumulated other comprehensive loss		$	-2,104	$	-129

LEASES_Tables

LEASES (Tables)	12 Months Ended
	Dec. 31, 2014
Leases [Abstract]
Operating Leases of Lessee Disclosure [Table Text Block]	As of December 31, 2014, the Company had commitments to charter-in 18 vessels. All of the charter-ins are accounted for as operating leases, of which 13 are bareboat charters and five are time charters. Lease expense relating to charters-in is included in “charter hire expenses” on the consolidated statements of operations.
	Bareboat Charters-in:
	At December 31, 2014	Amount		Operating Days
	2015	$	97,817		4,745
	2016		99,038		4,758
	2017		98,219		4,713
	2018		93,200		3,929
	2019		111,819		3,470
	Thereafter		39,278		1,568
	Net minimum lease payments	$	539,371		23,183
	Time Charters-in:
	At December 31, 2014	Amount		Operating Days
	2015	$	24,581		2,279
	2016		1,045		76
	Net minimum lease payments	$	25,626		2,355
Operating Leases of Lessor [Table Text Block]	The future minimum revenues, before reduction for brokerage commissions, expected to be received on noncancelable time charters and certain COAs for which minimum annual revenues can be reasonably estimated and the related revenue days (revenue days represent calendar days, less days that vessels are not available for employment due to repairs, drydock or lay-up) are as follows:
				Revenue
	At December 31, 2014	Amount		Days
	2015	$	423,230		9,268
	2016		274,875		4,927
	2017		180,087		2,825
	2018		124,536		1,719
	2019		78,067		933
	Thereafter		176,082		2,078
	Net minimum lease payments	$	1,256,877		21,750
Office Space [Member]
Leases [Abstract]
Operating Leases of Lessor [Table Text Block]	The future minimum commitments under lease obligations for office space are as follows:
	At December 31, 2014
	2015	$	1,890
	2016		1,059
	2017		523
	2018		314
	Net minimum lease payments	$	3,786

PENSION_AND_OTHER_POSTRETIREME1

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2014
Schedule of Multiemployer Plans [Table Text Block]	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:
					Pension Protection						Contributions made
					Act
					Zone Status						by the Company
	Pension Plan		EIN / Pension		2014		2013		Rehabilitation		2014			2013			2012
			Plan Number						Plan Status
	AMO Pension Plan		13-1936709		Yellow (1)		Yellow (1)		Implemented		$	994		$	975		$	890
	MEBA Pension Plan		51-6029896		Green (1)		Green (1)		None			-			-			-
	Seafarers Pension Plan		13-6100329		Green (1)		Green (1)		None			396			407			416
									Total contributions		$	1,390		$	1,382		$	1,306
	(1) A "Red" Zone Status plan is a plan that is funded less than 65% and currently has a funding deficiency or a funding deficiency that is projected in the near term. A "Yellow" Zone Status plan is a plan that has a funding ratio between 65% and 80%. A "Green" Zone Status plan is a plan that is 80% funded or more.
Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]	Information with respect to the domestic pension and postretirement benefit plans for which the Company uses a December 31 measurement date, follow:
			Pension Benefits						Other Benefits
	At December 31,		2014			2013			2014			2013
	Change in benefit obligation:
	Benefit obligation at beginning of year		$	46,036		$	51,022		$	3,919		$	4,466
	Cost of benefits earned (service cost)			-			-			89			118
	Interest cost on benefit obligation			1,951			1,775			193			178
	Actuarial (gains)/losses			8,957			-4,500			1,043			-621
	Benefits paid			-4,526			-2,261			-125			-222
	Benefit obligation at year end			52,418			46,036			5,119			3,919
	Change in plan assets:
	Fair value of plan assets at beginning of year			36,023			31,392			-			-
	Actual return on plan assets			1,014			5,574			-			-
	Employer contributions			1,063			1,318			-			-
	Benefits paid			-2,395			-2,261			-			-
	Fair value of plan assets at year end			35,705			36,023			-			-
	Unfunded status at December 31		$	-16,713		$	-10,013		$	-5,119		$	-3,919
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]	Information for domestic defined benefit pension plans with accumulated benefit obligations in excess of plan assets follows:
	At December 31,		2014			2013
	Projected benefit obligation		$	52,418		$	46,036
	Accumulated benefit obligation			52,418			46,036
	Fair value of plan assets			35,705			36,023
Schedule of Net Benefit Costs [Table Text Block]			Pension benefits									Other benefits
	For the year ended December 31,		2014			2013			2012			2014			2013			2012
	Components of expense:
	Cost of benefits earned		$	-		$	-		$	-		$	89		$	118		$	195
	Interest cost on benefit obligation			1,951			1,775			2,032			193			178			237
	Expected return on plan assets			-2,494			-2,092			-1,873			-			-			-
	Amortization of prior-service costs			-			-			-			-316			-333			-233
	Amortization of transition obligation			-			-			-			7			7			10
	Recognized net actuarial loss			-			504			316			129			171			160
	Gain due to curtailment			-			-			-			-42			-			-
	Net periodic (benefit)/cost		$	-543		$	187		$	475		$	60		$	141		$	369
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]	A 1% change in assumed health care cost trend rates would have the following effects:
			1% increase			1% decrease
	Effect on total of service and interest cost components in 2014		$	34		$	-29
	Effect on postretirement benefit obligation as of December 31, 2014		$	465		$	-434
Schedule of Expected Benefit Payments [Table Text Block]	Expected benefit payments are as follows:
			Pension benefits			Other benefits
	2015		$	2,468		$	189
	2016			2,597			194
	2017			2,629			207
	2018			2,738			214
	2019			2,842			209
	Years 2020-2024			15,624			1,190
			$	28,898		$	2,203
Schedule of Changes in Fair Value of Plan Assets [Table Text Block]	The fair values of the Company’s pension plan assets at December 31, 2014, by asset category are as follows:
	Description		Fair Value			Level 1			Level 2
	Cash and cash equivalents		$	1,099		$	1,099		$	-
	Equity securities:
	U.S. companies			17,259			17,259			-
	International companies			7,333			7,333			-
	Corporate debt securities			1,710			-			1,710
	Mutual funds(1)			3,352			3,352			-
	U.S. Treasury securities			3,923			3,923			-
	Federal agency mortgage-backed securities			974			974			-
	Sovereign securities			55			55			-
	Total		$	35,705		$	33,995		$	1,710
	-1	The mutual fund investments are invested in intermediate term bonds and fixed income instruments including (but not limited to) mortgage and other asset-backed securities and corporate debt securities of U.S. and non-U.S. issuers.
Benefit Obligations [Member]
Schedule of Assumptions Used [Table Text Block]	The weighted-average assumptions used to determine benefit obligations follow:
			Pension benefits							Other benefits
	At December 31,		2014			2013				2014				2013
	Discount rate			3.75	%			4.5	%			4	%			5	%
	Rate of future compensation increases			-				-				-				-
Net Periodic Benefit Cost [Member]
Schedule of Assumptions Used [Table Text Block]	The weighted-average assumptions used to determine net periodic benefit cost follow:
			Pension benefits												Other benefits
	For the year ended December 31,		2014				2013				2012				2014				2013			2012
	Discount rate			4.5	%			3.75	%			4.5	%			5	%			4	%		4.5	%
	Expected (long-term) return on plan assets			7	%			6.75	%			6.5	%			-				-			-
	Rate of future compensation increases			-				-				-				-				-			-

OTHER_INCOMEEXPENSE_Tables

OTHER INCOME/(EXPENSE) (Tables)	12 Months Ended
	Dec. 31, 2014
Other Income and Expenses [Abstract]
Schedule of Other Nonoperating Income (Expense) [Table Text Block]	Other income/(expense) consists of:
	For the year ended December 31,	2014		2013		2012
	Investment income:
	Interest	$	359	$	856	$	431
	Dividends		-		-		36
	Gain/(loss) on sale or write-down of securities and investments		-		-197		-3,166
			359		659		-2,699
	Gain on derivative transactions		-		-		1,376
	Miscellaneous—net		67		190		9
		$	426	$	849	$	-1,314

SEVERANCE_AND_RELOCATION_COSTS1

SEVERANCE AND RELOCATION COSTS AND AGREEMENTS WITH EXECUTIVE OFFICERS (Tables)	12 Months Ended
	Dec. 31, 2014
Restructuring and Related Activities [Abstract]
Restructuring and Related Costs [Table Text Block]	Activity relating to the reserves for the Outsourcing and April 2013 RIFs for the two years ended December 31, 2014 is summarized as follows:
		Outsourcing RIF		April 2013 RIF
	Activity for the year ended December 31, 2013:
	Provision			$	3,824
	Change in estimate				25
	Utilized				-2,059
	Release of excess reserves				-422
	Balance at December 31, 2013	$	-		1,368
	Provision		18,616		-
	Change in estimate		-1,831		-
	Utilized		-15,626		-1,176
	Release of excess reserves		-		-192
	Balance at December 31, 2014	$	1,159	$	-

2014_AND_2013_QUARTERLY_RESULT1

2014 AND 2013 QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) (Tables)	12 Months Ended
	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Information [Table Text Block]	Selected Financial Data for the Quarter Ended		March 31,  (1)		June 30,  (1)		Sept. 30,  (1)		Dec. 31,
	2014
	Shipping revenues		$	292,446	$	241,777	$	206,283	$	216,928
	Gain on disposal of vessels, including impairments			1,477		4		2,753		6,298
	Income/(loss) from vessel operations			34,630		-1,529		14,525		47,476
	Interest expense (2)			-123		-174,511		-29,111		-28,746
	Reorganization items, net			-29,256		-86,123		-49,756		-6,338
	Income tax benefit/(provision) (3)			-1,329		50,414		63,544		2,179
	Net income/(loss)			12,550		-201,967		10,614		26,530
	Basic and Diluted net income/(loss) per share - Common Stock		$	0.41	$	-6.61	$	-	$	-
	Basic and Diluted net income/(loss) per share - Class A and Class B		$	-	$	-	$	0.03	$	0.05
	(1)	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share.  The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
	(2)	Interest expense of $73,637 for the Unsecured Revolving Credit Facility and interest expense of $73,660 for the Unsecured Senior Notes relating to post-petition contractual interest (which includes default interest) were recorded in the second quarter.
	(3)	As discussed in Note 13, "Taxes," there was an income tax benefit for the year ended December 31, 2014 due to a) a change in the mix of U.S. and foreign income and losses, primarily occurring in the second quarter and b) the Company released its deferred tax liability for undistributed earnings of its foreign subsidiaries attributable to the excess of the $1,500,000 facility limit over the cumulative potential deemed dividends arising from drawdowns by OSG under such facility and recorded an income tax benefit of $55,602 in the third quarter.
	Selected Financial Data for the Quarter Ended		March 31,		June 30,		Sept. 30,		Dec. 31,
	2013
	Shipping revenues		$	247,438	$	228,114	$	267,342	$	273,102
	Gain/(loss) on disposal of vessels, including impairments (1)			-22		1,228		-63		-382,614
	Income/(loss) from vessel operations			1,221		432		7,768		-376,619
	Interest expense (2)			-288		-31		-3		-28
	Reorganization items, net (3)			-184,621		-37,503		-14,705		-90,341
	Income tax benefit/(provision)			5,835		1,899		-1,947		8,958
	Net income/(loss)			-167,762		-24,147		960		-447,281
	Basic and diluted net income/(loss) per share		$	-5.51	$	-0.79	$	0.03	$	-14.67
	(1)	As discussed in Note 6, "Vessels, Deferred Drydock and Other Property," vessel impairment charges aggregating $365,976 were recorded in the fourth quarter. Further, as discussed in Note 3, "Summary of Significant Accounting Policies," and Note 9, "Intangible Assets," impairment charges of $9,589 for goodwill and $6,625 for intangible assets related to the International Crude Tankers Lightering business were recorded in the fourth quarter.
	(2)	As discussed in Note 2, "Chapter 11 Filing and Emergence from Bankruptcy," and Note 10, "Debt," the Debtors filed a petition for relief under Chapter 11 and its debt agreements were classified as liabilities subject to compromise as of December 31, 2013. For the quarter ended December 31, 2013, interest expense of $17,168 was accordingly not recorded.
	(3)	Also discussed in Note 2, the Company adjusts its accrued liabilities relating to rejected executory contracts when new information becomes available. In the fourth quarter, the Company increased its accruals by $69,154 based upon such new information.

BASIS_OF_PRESENTATION_AND_DESC1

BASIS OF PRESENTATION AND DESCRIPTION OF BUSINESS (Details Textual) (Investment In Affiliates [Member])	Dec. 31, 2014
Investment In Affiliates [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%

CHAPTER_11_FILING_AND_EMERGENC2

CHAPTER 11 FILING AND EMERGENCE FROM BANKRUPTCY (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Schedule Of Debt [Line Items]
Debt as of December 31, 2013	$2,564,559	[1],[2]
Less Debt Repaid	-2,124,716
Debt Reinstated or Exchanged	446,000
Exit Financing	1,228,824	[3]
Debt as of December 31, 2014	1,668,667	[4]
Unsecured Revolving Credit Facility [Member]
Schedule Of Debt [Line Items]
Debt as of December 31, 2013	1,489,000	[1]
Less Debt Repaid	-1,489,000
Debt Reinstated or Exchanged	0
Exit Financing	0	[3]
Debt as of December 31, 2014	0
8.125% Notes due 2018 [Member]
Schedule Of Debt [Line Items]
Debt as of December 31, 2013	300,000	[1]
Debt Reinstated or Exchanged	300,000
Debt as of December 31, 2014	300,000
7.50% Notes due 2021 through 2024 [Member]
Schedule Of Debt [Line Items]
Debt as of December 31, 2013	146,000	[1]
Debt Reinstated or Exchanged	146,000
Debt as of December 31, 2014	146,000
8.75% Debentures due 2013 [Member]
Schedule Of Debt [Line Items]
Debt as of December 31, 2013	63,603	[1],[2]
Less Debt Repaid	-63,603
Debt Reinstated or Exchanged	0
Debt as of December 31, 2014	0	[4]
Secured Term Loans due through 2023 [Member]
Schedule Of Debt [Line Items]
Debt as of December 31, 2013	565,956	[1],[5]
Less Debt Repaid	-565,956	[5]
Debt as of December 31, 2014	0	[5]
OBS Term Loan due 2019 [Member]
Schedule Of Debt [Line Items]
Less Debt Repaid	-3,015
Exit Financing	601,520	[3]
Debt as of December 31, 2014	598,505
OIN Term Loan due 2019 [Member]
Schedule Of Debt [Line Items]
Less Debt Repaid	-3,142
Exit Financing	627,304	[3]
Debt as of December 31, 2014	$624,162
[1]	Debt (reflects add back of $2,909 of original issue discount) classified as liabilities subject to compromise at December 31, 2013.
[2]	Classified as liabilities subject to compromise as of December 31, 2013.
[3]	OBS and OIN Term Loan balances are net of unamortized original issue discounts as of December 31, 2014 of $1,480 and $1,071, respectively.
[4]	The weighted average effective interest rate for debt outstanding as of December 31, 2014 was 6.21%.
[5]	Debt was reported in liabilities subject to compromise net of Adequate Protection Interest Payments of $12,731, which had been classified as a reduction of debt through March 31, 2014.

CHAPTER_11_FILING_AND_EMERGENC3

CHAPTER 11 FILING AND EMERGENCE FROM BANKRUPTCY (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Liabilities Subject to Compromise, Biginning Balance	$2,888,173
Liabilities Subject to Compromise, Change in Estimated Allowed Claim 2014	233,416
Liabilities Subject to Compromise, Cash Payment	-2,647,476
Liabilities Subject to Compromise, Reclassified	-474,113	[1]
Liabilities Subject to Compromise, Ending Balance	0
Unsecured Revolving Credit Facility [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Liabilities Subject to Compromise, Biginning Balance	1,489,000
Liabilities Subject to Compromise, Change in Estimated Allowed Claim 2014	0
Liabilities Subject to Compromise, Cash Payment	-1,489,000
Liabilities Subject to Compromise, Reclassified	0	[1]
Liabilities Subject to Compromise, Ending Balance	0
Accrued Post-petition Interest On Other Claims [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Liabilities Subject to Compromise, Biginning Balance	0
Liabilities Subject to Compromise, Change in Estimated Allowed Claim 2014	880
Liabilities Subject to Compromise, Cash Payment	0
Liabilities Subject to Compromise, Reclassified	-880	[1]
Liabilities Subject to Compromise, Ending Balance	0
Accrued Liabilities Related To Rejected Executory Contracts [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Liabilities Subject to Compromise, Biginning Balance	282,599
Liabilities Subject to Compromise, Change in Estimated Allowed Claim 2014	14,550
Liabilities Subject to Compromise, Cash Payment	-296,958
Liabilities Subject to Compromise, Reclassified	-191	[1]
Liabilities Subject to Compromise, Ending Balance	0
Pension And Other Post Retirement Benefit Plan Liabilities [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Liabilities Subject to Compromise, Biginning Balance	27,377
Liabilities Subject to Compromise, Change in Estimated Allowed Claim 2014	-1,257
Liabilities Subject to Compromise, Cash Payment	-14,429
Liabilities Subject to Compromise, Reclassified	-11,691	[1]
Liabilities Subject to Compromise, Ending Balance	0
Derivative Liabilities [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Liabilities Subject to Compromise, Biginning Balance	3,566
Liabilities Subject to Compromise, Change in Estimated Allowed Claim 2014	186
Liabilities Subject to Compromise, Cash Payment	-3,662
Liabilities Subject to Compromise, Reclassified	-90	[1]
Liabilities Subject to Compromise, Ending Balance	0
Unsecured Senior Notes [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Liabilities Subject to Compromise, Biginning Balance	500,780
Liabilities Subject to Compromise, Change in Estimated Allowed Claim 2014	8,823
Liabilities Subject to Compromise, Cash Payment	-63,603
Liabilities Subject to Compromise, Reclassified	-446,000	[1]
Liabilities Subject to Compromise, Ending Balance	0
Pre-petition Accounts Payable And Other Accrued Liabilities [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Liabilities Subject to Compromise, Biginning Balance	4,565
Liabilities Subject to Compromise, Change in Estimated Allowed Claim 2014	21,748
Liabilities Subject to Compromise, Cash Payment	-12,821
Liabilities Subject to Compromise, Reclassified	-13,492	[1]
Liabilities Subject to Compromise, Ending Balance	0
Secured Long-Term Debt And Accrued Interest [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Liabilities Subject to Compromise, Biginning Balance	569,408
Liabilities Subject to Compromise, Change in Estimated Allowed Claim 2014	20,577
Liabilities Subject to Compromise, Cash Payment	-589,985
Liabilities Subject to Compromise, Reclassified	0	[1]
Liabilities Subject to Compromise, Ending Balance	0
Accrued Interest On Unsecured Revolving Credit Facility And Senior Notes [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Liabilities Subject to Compromise, Biginning Balance	10,878
Liabilities Subject to Compromise, Change in Estimated Allowed Claim 2014	167,909
Liabilities Subject to Compromise, Cash Payment	-177,018
Liabilities Subject to Compromise, Reclassified	-1,769	[1]
Liabilities Subject to Compromise, Ending Balance	$0
[1]	Amounts reclassified included $16,231 to accounts payable, accrued expenses and other current liabilities, $446,000 to long-term debt relating to the Unsecured Senior Notes and $11,882 to other liabilities.

CHAPTER_11_FILING_AND_EMERGENC4

CHAPTER 11 FILING AND EMERGENCE FROM BANKRUPTCY (Details 2) (USD $)	3 Months Ended															12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Trustee fees																$2,751	$3,006	$672
Professional fees																112,678	62,823	7,889
Deferred financing fees write-off																0	0	12,540
2004 Stock Incentive Plan																1,796	0	0
Other claims adjustments																13,895	216	0
Reorganization Items, net	6,338	49,756	[1]	86,123	[1]	29,256	[1]	90,341	[2]	14,705	[2]	37,503	[2]	184,621	[2]	171,473	327,170	41,113
Rejected executory contracts [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Debtor Reorganization Items, Provision for Expected Allowed Claims																6,864	256,522	30,187
Debt facilities [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Debtor Reorganization Items, Provision for Expected Allowed Claims																15,416	0	0
Other claims [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Debtor Reorganization Items, Provision for Expected Allowed Claims																1,073	0	0
Lawsuit and other subordinated claims [Member]
Liabilities Subject To Compromise And Reorganization Items [Line Items]
Debtor Reorganization Items, Provision for Expected Allowed Claims																$17,000	$0	$0
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
[2]	Also discussed in Note 2, the Company adjusts its accrued liabilities relating to rejected executory contracts when new information becomes available. In the fourth quarter, the Company increased its accruals by $69,154 based upon such new information.

CHAPTER_11_FILING_AND_EMERGENC5

CHAPTER 11 FILING AND EMERGENCE FROM BANKRUPTCY (Details Textual) (USD $)	1 Months Ended	12 Months Ended					1 Months Ended
In Thousands, except Share data, unless otherwise specified	2-May-14	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Mar. 07, 2014
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Bankruptcy Claims, Amount of Claims Settled		$15,000
Stock Issued During Period, Value, New Issues	1,510,000	1,510,000
Bankruptcy Claims, Amount of Claims Filed		1,500
Common Stock, Shares, Issued				44,290,759
Common Stock, Par or Stated Value Per Share		$1		$1
Long-term Debt, Gross				2,909
Increase Decrease In Adequate Payment		12,731
Accounts Payable and Other Accrued Liabilities, Current		96,066		121,582
Long-term Debt		1,668,667	[1]	2,564,559	[2],[3]
Other Liabilities		11,882
Cash Paid for Reorganization Items		443,296		65,949		6,437
Professional Fees		15,258		14,950		2,632
Common Stock, Shares Authorized		120,000,000		120,000,000
Euronav Nv Joint Venture [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Equity Method Investment, Ownership Percentage		50.00%
Common Class A [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Common Stock, Shares, Issued		310,744,763
Common Stock, Par or Stated Value Per Share		$0.01
Common Stock, Shares Authorized		1,000,000,000
Common Class B [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Common Stock, Shares, Issued		5,017,330
Common Stock, Par or Stated Value Per Share		$0.01
Common Stock, Shares Authorized		7,926,805
Election 2 Noteholders [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		7.50%		7.50%
Amended And Restated Certificate [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Common Stock, Shares Authorized		1,067,926,805
Amended And Restated Certificate [Member] | Common Class A [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Common Stock, Par or Stated Value Per Share		$0.01
Common Stock, Shares Authorized		1,000,000,000
Amended And Restated Certificate [Member] | Common Class B [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Common Stock, Par or Stated Value Per Share		$0.01
Common Stock, Shares Authorized		7,926,805
Notes 7.50% Due 2024 [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		7.50%		7.50%
Debt Instrument Maturity Year		2024
Long-term Debt		784	[1]	146,000	[3]
8.125% Notes due 2018 [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		8.13%		8.13%
Long-term Debt		300,000		300,000	[2]
Notes 7.50% Due 2021 [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		7.50%
Debt Instrument Maturity Year		2021
Notes 7.50% Due 2021 [Member] | Election 2 Noteholders [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debt Instrument, Annual Principal Payment		138,708
Notes 7.50% Due 2021 [Member] | Election 1 Noteholder [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debt Instrument, Annual Principal Payment		6,508
Unsecured Senior Notes [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Accounts Payable and Other Accrued Liabilities, Current		16,231
Long-term Debt		446,000
Reorganized OSG Stock [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Bankruptcy Claims, Amount of Claims Filed							1,500,000	[4]
Preferred Stock [Member] | Amended And Restated Certificate [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Preferred Stock, Shares Authorized		60,000,000
Preferred Stock, Par or Stated Value Per Share		$0.01
Class A Warrant [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Warrant Issued		213,715,419
Class A Warrant [Member] | Common Class A [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Stock Issued During Period, Shares, New Issues		25,166,668
Class B Warrant [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Warrant Issued		2,469,013
Secured Debt [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Secured Long-term Debt, Noncurrent		603,000
Term Loan [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Secured Long-term Debt, Noncurrent		628,375
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums		1,480
Term loan 1 [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Secured Long-term Debt, Noncurrent		50,000
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums		1,071
Asset Based Revolving Loan [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Secured Long-term Debt, Noncurrent		75,000
Revolving Credit Facility [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Bankruptcy Claims, Amount of Claims Filed		1,500,000
Long-term Debt						1,500,000
Third Supplemental Indenture [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Debt Instrument, Annual Principal Payment		$784
Third Supplemental Indenture [Member] | Notes 7.50% Due 2024 [Member] | Election 2 Noteholders [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Percentage of Cash payment on Principal Amount		3.00%
Third Supplemental Indenture [Member] | Notes 7.50% Due 2024 [Member] | Election 1 Noteholder [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Percentage of Cash payment on Principal Amount		1.00%
Rights [Member]
Chapter 11 Filing Going Concern and Other Related Matters [Line Items]
Development Stage Entities, Equity Issuance, Per Share Amount		$3
[1]	The weighted average effective interest rate for debt outstanding as of December 31, 2014 was 6.21%.
[2]	Debt (reflects add back of $2,909 of original issue discount) classified as liabilities subject to compromise at December 31, 2013.
[3]	Classified as liabilities subject to compromise as of December 31, 2013.
[4]	OBS and OIN Term Loan balances are net of unamortized original issue discounts as of December 31, 2014 of $1,480 and $1,071, respectively.

SUMMARY_OF_SIGNIFICANT_ACCOUNT2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Summary Of Significant Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents			$53,085
Goodwill and Intangible Asset Impairment	9,589		0		16,214		0
Income Tax Benefit Rate			50.00%
Accounts Receivable, Net	2,024		352		2,024
Deferred Finance Costs, Gross			48,186
Long-term Debt	2,564,559	[1],[2]	1,668,667	[3]	2,564,559	[1],[2]
Deferred Financing Costs Writeoff			0		0		12,540
Debt Instrument, Unamortized Discount			2,909
Amortization of Financing Costs and Discounts			3,973		0		3,198
Increase in Voyage Charter Revenues			40,454		40,454
Increase in Voyage Expenses			70,817		70,817
Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage			77.00%		58.00%
Sales Revenue, Net [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage			10.00%
Revolving Credit Facility [Member]
Summary Of Significant Accounting Policies [Line Items]
Long-term Debt							1,500,000
Unsecured Forward Start Credit Facility [Member]
Summary Of Significant Accounting Policies [Line Items]
Proceeds from Unsecured Lines of Credit			900,000
Unsecured Debt [Member]
Summary Of Significant Accounting Policies [Line Items]
Long-term Debt	1,489,000	[2]	0	[3]	1,489,000	[2]
Amortization of Financing Costs							10,517
Debt Instrument, Unamortized Discount			5,914
OIN term loan [Member]
Summary Of Significant Accounting Policies [Line Items]
Restricted Cash and Cash Equivalents			70,093
Proceeds from Sales of Assets, Investing Activities			5,000
Long-term Debt	0	[2]	624,162	[3]	0	[2]
Vessals [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life			25 years
Property, Plant, and Equipment, Salvage Value			300
Interest Costs Capitalized			$0		$0		$1,060
International Flag Tankers [Member]
Summary Of Significant Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life			20 years
Property, Plant and Equipment, Other Types [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life			3 years
Property, Plant and Equipment, Other Types [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life			35 years
[1]	Debt (reflects add back of $2,909 of original issue discount) classified as liabilities subject to compromise at December 31, 2013.
[2]	Classified as liabilities subject to compromise as of December 31, 2013.
[3]	The weighted average effective interest rate for debt outstanding as of December 31, 2014 was 6.21%.

EARNINGS_PER_COMMON_SHARE_Deta

EARNINGS PER COMMON SHARE (Details) (USD $)

3 Months Ended

12 Months Ended

In Thousands, except Share data, unless otherwise specified

Dec. 31, 2014

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Earning Per Share [Line Items]

Net loss

$26,530

$10,614

[1]

($201,967)

[1]

$12,550

[1]

($447,281)

$960

($24,147)

($167,762)

($152,273)

($638,230)

($480,114)

Weighted average common shares outstanding:

Common stock - basic and diluted

30,482,818

30,339,258

Common Class A [Member]

Weighted average common shares outstanding:

Common stock - basic and diluted

212,507,963

[2]

0

0

Common Class B [Member]

Weighted average common shares outstanding:

Common stock - basic and diluted

21,372,197

[3]

[1]

The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.

[2]

The weighted average common shares outstanding for Class A Common Stock basic and diluted was calculated using no Class A Common Stock and no Class A Warrants outstanding for the period January 1, 2014 through August 4, 2014. 310,419,766 Class A Common Stock and 210,153,431 Class A Warrants were used in calculating the weighted average common shares outstanding for the period August 5, 2014 through December 31, 2014.

[3]

The weighted average common shares outstanding for Class B Common Stock basic and diluted was calculated using the common shares outstanding for each of the years in the two year period ended December 31, 2013 and for the period January 1, 2014 through August 4, 2014 and Class B Common Stock outstanding and Class B Warrants outstanding for the period August 5, 2014 through December 31, 2014. As of December 31, 2014 there are 2,908,149 Class B Warrants outstanding.

EARNINGS_PER_COMMON_SHARE_Deta1

EARNINGS PER COMMON SHARE (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	974,932	1,041,723	2,383,896
Common Class A [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
Common Stock, Shares, Outstanding	310,744,763
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	324,997
Common Class A [Member] | Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common Stock, Shares, Outstanding	196,349
Common Class A [Member] | Stock Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common Stock, Shares, Outstanding	453,586

BUSINESS_AND_SEGMENT_REPORTING2

BUSINESS AND SEGMENT REPORTING (Details) (USD $)	3 Months Ended															12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Shipping revenues	$216,928	$206,283	[1]	$241,777	[1]	$292,446	[1]	$273,102		$267,342		$228,114		$247,438		$957,434	$1,015,996	$1,137,134
Time charter equivalent revenues																761,359	763,328	840,846
Depreciation and amortization																151,758	176,276	201,284
Gain/(loss) on disposal of vessels, including impairments	6,298	2,753	[1]	4	[1]	1,477	[1]	-382,614	[2]	-63	[2]	1,228	[2]	-22	[2]	10,532	-365,257	-271,359
Goodwill and other intangibles impairment charge								9,589								0	16,214	0
Income/(loss) from vessel operations																188,733	115,033	-15,866
Equity in income of affiliated companies																41,355	40,894	33,486
Investments in and advances to affiliated companies	334,863							323,327								334,863	323,327	252,398
Total assets	3,436,491							3,644,494								3,436,491	3,644,494	3,486,172
Expenditures for vessels																32,412	36,377	52,604
Payments for drydockings																37,817	22,024	45,990
International Crude Tankers Segment [Member]
Segment Reporting Information [Line Items]
Shipping revenues																363,331	352,871	343,541
Time charter equivalent revenues																228,295	209,876	256,843
Depreciation and amortization																56,210	76,086	83,558
Gain/(loss) on disposal of vessels, including impairments																8,017	-328,146	-102,242
Goodwill and other intangibles impairment charge																	-16,214
Income/(loss) from vessel operations																65,532	-17,806	-70,909
Equity in income of affiliated companies																30,925	29,746	18,658
Investments in and advances to affiliated companies	277,816							271,009								277,816	271,009	241,198
Total assets	1,191,490							1,356,796								1,191,490	1,356,796	1,739,740
Expenditures for vessels																1,437	26,106	33,488
Payments for drydockings																5,286	8,003	20,063
International Product Carriers Segment [Member]
Segment Reporting Information [Line Items]
Shipping revenues																153,665	229,202	332,922
Time charter equivalent revenues																118,669	149,349	172,356
Depreciation and amortization																26,850	30,226	43,577
Gain/(loss) on disposal of vessels, including impairments																-44	-38,395	-160,706
Goodwill and other intangibles impairment charge																	0
Income/(loss) from vessel operations																3,429	22,510	-59,378
Equity in income of affiliated companies																0	0	0
Investments in and advances to affiliated companies	11,334							4,505								11,334	4,505	6,000
Total assets	551,693							565,387								551,693	565,387	642,379
Expenditures for vessels																20,017	7,619	18,567
Payments for drydockings																6,792	2,270	7,166
International Other Segment [Member]
Segment Reporting Information [Line Items]
Shipping revenues																22	3,286	10,156
Time charter equivalent revenues																22	3,225	10,071
Depreciation and amortization																2,114	2,818	5,392
Gain/(loss) on disposal of vessels, including impairments																1,970	117	8,085
Goodwill and other intangibles impairment charge																	0
Income/(loss) from vessel operations																-1,877	-3,104	-4,243
Equity in income of affiliated companies																7,040	7,542	11,378
Investments in and advances to affiliated companies	42,286							44,278								42,286	44,278	1,700
Total assets	42,286							44,591								42,286	44,591	2,333
Expenditures for vessels																0	-3	6
Payments for drydockings																0	0	0
US Segment [Member]
Segment Reporting Information [Line Items]
Shipping revenues																440,416	430,637	450,515
Time charter equivalent revenues																414,373	400,878	401,576
Depreciation and amortization																66,584	67,146	68,757
Gain/(loss) on disposal of vessels, including impairments																589	1,167	-16,496
Goodwill and other intangibles impairment charge																	0
Income/(loss) from vessel operations																121,649	113,433	118,664
Equity in income of affiliated companies																3,390	3,606	3,450
Investments in and advances to affiliated companies	3,427							3,535								3,427	3,535	3,500
Total assets	1,052,056							1,040,541								1,052,056	1,040,541	1,101,720
Expenditures for vessels																10,958	2,655	543
Payments for drydockings																$25,739	$11,751	$18,761
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
[2]	As discussed in Note 6, "Vessels, Deferred Drydock and Other Property," vessel impairment charges aggregating $365,976 were recorded in the fourth quarter. Further, as discussed in Note 3, "Summary of Significant Accounting Policies," and Note 9, "Intangible Assets," impairment charges of $9,589 for goodwill and $6,625 for intangible assets related to the International Crude Tankers Lightering business were recorded in the fourth quarter.

BUSINESS_AND_SEGMENT_REPORTING3

BUSINESS AND SEGMENT REPORTING (Details 1) (USD $)	3 Months Ended											12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Time charter equivalent revenues												$761,359	$763,328	$840,846
Add: Voyage expenses												196,075	252,668	296,288
Shipping revenues	$216,928	$206,283	[1]	$241,777	[1]	$292,446	[1]	$273,102	$267,342	$228,114	$247,438	$957,434	$1,015,996	$1,137,134
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.

BUSINESS_AND_SEGMENT_REPORTING4

BUSINESS AND SEGMENT REPORTING (Details 2) (USD $)	3 Months Ended																12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total income (loss) from vessel operations of all segments																	$188,733	$115,033	($15,866)
General and administrative expenses																	-83,716	-97,663	-88,845
Technical management transition costs																	-3,427	0	0
Severance and relocation costs																	-17,020	-3,097	-3,163
Goodwill and other intangibles impairment charge									9,589								0	16,214	0
Gain/(loss) on disposal of vessels, including impairments	6,298		2,753	[1]	4	[1]	1,477	[1]	-382,614	[2]	-63	[2]	1,228	[2]	-22	[2]	10,532	-365,257	-271,359
Consolidated income/(loss) from vessel operations	47,476		14,525	[1]	-1,529	[1]	34,630	[1]	-376,619		7,768		432		1,221		95,102	-367,198	-379,233
Equity in income of affiliated companies																	41,355	40,894	33,486
Other income (expense)																	426	849	-1,314
Interest expense	-28,746	[3]	-29,111	[1],[3]	-174,511	[1],[3]	-123	[1],[3]	-28	[4]	-3	[4]	-31	[4]	-288	[4]	-232,491	-350	-93,421
Loss before reorganization items and income taxes																	($95,608)	($325,805)	($440,482)
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
[2]	As discussed in Note 6, "Vessels, Deferred Drydock and Other Property," vessel impairment charges aggregating $365,976 were recorded in the fourth quarter. Further, as discussed in Note 3, "Summary of Significant Accounting Policies," and Note 9, "Intangible Assets," impairment charges of $9,589 for goodwill and $6,625 for intangible assets related to the International Crude Tankers Lightering business were recorded in the fourth quarter.
[3]	Interest expense of $73,637 for the Unsecured Revolving Credit Facility and interest expense of $73,660 for the Unsecured Senior Notes relating to post-petition contractual interest (which includes default interest) were recorded in the second quarter.
[4]	As discussed in Note 2, "Chapter 11 Filing and Emergence from Bankruptcy," and Note 10, "Debt," the Debtors filed a petition for relief under Chapter 11 and its debt agreements were classified as liabilities subject to compromise as of December 31, 2013. For the quarter ended December 31, 2013, interest expense of $17,168 was accordingly not recorded.

BUSINESS_AND_SEGMENT_REPORTING5

BUSINESS AND SEGMENT REPORTING (Details 3) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Segment Reporting Information [Line Items]
Total assets	$3,436,491	$3,644,494	$3,486,172
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total assets	2,837,525	3,007,315
Restricted Cash [Member]
Segment Reporting Information [Line Items]
Total assets	123,178	0
Corporate cash and cash equivalents [Member]
Segment Reporting Information [Line Items]
Total assets	389,226	601,927
Other unallocated amounts [Member]
Segment Reporting Information [Line Items]
Total assets	$86,562	$35,252

BUSINESS_AND_SEGMENT_REPORTING6

BUSINESS AND SEGMENT REPORTING (Details 4) (USD $)	3 Months Ended											12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Shipping revenues	$216,928	$206,283	[1]	$241,777	[1]	$292,446	[1]	$273,102	$267,342	$228,114	$247,438	$957,434	$1,015,996	$1,137,134
Vessels Deferred Dry Dock and Other Property	2,275,630							2,416,600				2,275,630	2,416,600
Consolidated [Member]
Segment Reporting Information [Line Items]
Shipping revenues												957,434	1,015,996	1,137,134
Vessels Deferred Dry Dock and Other Property	2,275,630							2,416,600				2,275,630	2,416,600	2,911,706
International Flag [Member]
Segment Reporting Information [Line Items]
Shipping revenues												517,018	585,359	686,619
Vessels Deferred Dry Dock and Other Property	1,348,044							1,466,970				1,348,044	1,466,970	1,911,228
U.S. [Member]
Segment Reporting Information [Line Items]
Shipping revenues												440,416	430,637	450,515
Vessels Deferred Dry Dock and Other Property	$927,586							$949,630				$927,586	$949,630	$1,000,478
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.

VESSELS_DEFERRED_DRYDOCK_AND_O2

VESSELS, DEFERRED DRYDOCK AND OTHER PROPERTY (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Construction in progress	$0	$54,644
Net Carrying Value	2,213,217	2,359,352
Vessels At Cost [Member]
Property, Plant and Equipment [Line Items]
Cost	2,804,179	2,784,023
Accumulated depreciation and amortization	-603,603	-495,391
Net Carrying Value	2,200,576	2,288,632
Property, Plant and Equipment, Other Types [Member]
Property, Plant and Equipment [Line Items]
Cost	34,360	45,633
Accumulated depreciation and amortization	-21,719	-29,557
Net Carrying Value	$12,641	$16,076

VESSELS_DEFERRED_DRYDOCK_AND_O3

VESSELS, DEFERRED DRYDOCK AND OTHER PROPERTY (Details 1) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014		Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Net Carrying Value	$2,359,352	$2,213,217
Vessels [Member]
Property, Plant and Equipment [Line Items]
Cost	2,784,023	2,804,179		3,307,813	3,776,344
Accumulated Depreciation	-495,391	-603,603		-591,256	-818,555
Net Carrying Value	2,288,632	2,200,576		2,716,557	2,957,789
Average Vessel Age	9.8	9.5
Number Of Owned Vessels	61	57
Vessels [Member] | International Crude Tankers Segment [Member]
Property, Plant and Equipment [Line Items]
Cost	1,147,537	1,080,035
Accumulated Depreciation	-222,314	-260,985
Net Carrying Value	925,223	819,050	[1],[2]
Average Vessel Age	10.6	10.3
Number Of Owned Vessels	29	24
Vessels [Member] | International Crude Tankers Segment [Member] | Very Large Crude Carrier Vessel [Member]
Property, Plant and Equipment [Line Items]
Cost	722,863	681,743
Accumulated Depreciation	-164,911	-187,139
Net Carrying Value	557,952	494,604
Average Vessel Age	10.5	10.1
Number Of Owned Vessels	11	9
Vessels [Member] | International Crude Tankers Segment [Member] | Panamaxes [Member]
Property, Plant and Equipment [Line Items]
Cost	145,168	128,564
Accumulated Depreciation	0	-7,046
Net Carrying Value	145,168	121,518
Average Vessel Age	11.1	12.3
Number Of Owned Vessels	9	8
Vessels [Member] | International Crude Tankers Segment [Member] | Aframaxes [Member]
Property, Plant and Equipment [Line Items]
Cost	279,506	269,728
Accumulated Depreciation	-57,403	-66,800
Net Carrying Value	222,103	202,928
Average Vessel Age	10.7	9.6
Number Of Owned Vessels	9	7
Vessels [Member] | International Product Carriers Segment [Member]
Property, Plant and Equipment [Line Items]
Cost	494,035	568,081
Accumulated Depreciation	-58,458	-80,589
Net Carrying Value	435,577	487,492	[2],[3]
Average Vessel Age	7.6	7.7
Number Of Owned Vessels	18	19
Vessels [Member] | International Product Carriers Segment [Member] | Panamax [Member]
Property, Plant and Equipment [Line Items]
Cost	196,470	196,472
Accumulated Depreciation	-31,856	-39,519
Net Carrying Value	164,614	156,953
Average Vessel Age	5.1	6.1
Number Of Owned Vessels	4	4
Vessels [Member] | International Product Carriers Segment [Member] | Handysize Product Carrier Vessel [Member]
Property, Plant and Equipment [Line Items]
Cost	297,565	297,928
Accumulated Depreciation	-26,602	-39,879
Net Carrying Value	270,963	258,049
Average Vessel Age	8.8	9.8
Number Of Owned Vessels	14	14
Vessels [Member] | International Product Carriers Segment [Member] | Aframaxes [Member]
Property, Plant and Equipment [Line Items]
Cost		73,681
Accumulated Depreciation		-1,191
Net Carrying Value		72,490
Average Vessel Age		0.4
Number Of Owned Vessels		1
Vessels [Member] | U.S. [Member]
Property, Plant and Equipment [Line Items]
Cost	1,142,451	1,156,063
Accumulated Depreciation	-214,619	-262,029
Net Carrying Value	$927,832	$894,034	[4]
Average Vessel Age	6.4	7.4
Number Of Owned Vessels	14	14
[1]	Includes one ULCC, eight VLCCs, seven Aframaxes and seven Panamaxes that are pledged as collateral under both the OIN Revolver Facility due on February 5, 2019 and the OIN Secured Term Loan due on August 5, 2019 with an aggregate carrying value of $802,604.
[2]	The International Flag Crude Tankers segment and the International Flag Product Carriers segment include vessels with an aggregate carrying value of $399,529 and $303,182, respectively, which the Company believes exceeds their aggregate market values of approximately $343,167 and $223,000, by $56,362 and $80,182, respectively.
[3]	Includes one Aframax, four Panamaxes and 13 Handysize Product Carriers that are pledged as collateral under both the OIN Revolver Facility and the OIN Secured Term Loan with an aggregate carrying value of $478,473.
[4]	Includes one Handysize Product Carrier and eight ATB tug barge units that are pledged as collateral under the OBS ABL Facility due on February 5, 2019 and three Handysize Product Carriers that are pledged as collateral under the OBS Term Loan due on August 5, 2019. The OBS Term Loan has a second lien on the vessels pledged under the OBS ABL Facility and the OBS ABL Facility has a second lien on the vessels pledged under the OBS Term Loan. Vessels pledged as collateral under the OBS Term Loan and OBS ABL Facility have aggregate carrying values of $526,036. (See Note 10, bDebt,b to these consolidated financial statements for additional information regarding secured loan facilities).

VESSELS_DEFERRED_DRYDOCK_AND_O4

VESSELS, DEFERRED DRYDOCK AND OTHER PROPERTY (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net Book Value
Ending Balance	$2,213,217	$2,359,352
Vessels [Member]
Vessel Cost
Beginning Balance	2,784,023	3,307,813	3,776,344
Purchases and vessel additions	27,236	2,809	7,983
Transfers from construction in progress	62,475	71,553	189,105
Disposals and transfers to held for sale	-69,555	-4,951	-29,653
Impairment		-593,201	-635,966
Ending Balance	2,804,179	2,784,023	3,307,813
Accumulated Depreciation
Beginning Balance	-495,391	-591,256	-818,555
Disposals	4,808	1,837	25,104
Depreciation	-113,020	-133,197	-154,997
Impairment		227,225	357,192
Ending Balance	-603,603	-495,391	-591,256
Net Book Value
Beginning Balance	2,288,632	2,716,557	2,957,789
Ending Balance	$2,200,576	$2,288,632	$2,716,557

VESSELS_DEFERRED_DRYDOCK_AND_O5

VESSELS, DEFERRED DRYDOCK AND OTHER PROPERTY (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Beginning Balance	$57,248	$74,418	$66,023
Payments for drydocking	37,817	22,024	45,990
Sub-total	95,065	96,442	112,013
Drydock amortization	-30,288	-32,648	-34,382
Amounts recognized upon sale/redelivery of vessels and non-cash adjustments	-2,364	-6,546	-2,605
Impairments	0	0	-608
Ending Balance	$62,413	$57,248	$74,418

VESSELS_DEFERRED_DRYDOCK_AND_O6

VESSELS, DEFERRED DRYDOCK AND OTHER PROPERTY (Details Textual) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Gain (Loss) on disposition of property		$10,532		$1,182	$8,023
Broker Commission Percentage		2.00%
Asset Impairment Charges		365,976			278,345
Reduction In Deferred Drydock Costs					608
Impairment of Long-Lived Assets Held-for-use		0		366,439	279,382
Property, Plant and Equipment, Net, Total	2,359,352	2,213,217		2,359,352
Property, Plant, and Equipment, Additional Disclosures					During 2012, the Company completed construction of a VLCC and an International Flag Handysize Product Carrier
Very Large Crude Carrier Vessel [Member]
Property, Plant and Equipment [Line Items]
Long Lived Assets Held-for-sale, Impairment Charge				462
Handysize Product Carrier Vessel [Member]
Property, Plant and Equipment [Line Items]
Long Lived Assets Held-for-sale, Impairment Charge					94,288
Us Flag [Member]
Property, Plant and Equipment [Line Items]
Gain (Loss) on disposition of property		10,532		1,167	8,078
Long Lived Assets Held-for-sale, Impairment Charge					1,037
International Crude Tankers Segment [Member]
Property, Plant and Equipment [Line Items]
Gain (Loss) on disposition of property		10,325
Vessels [Member]
Property, Plant and Equipment [Line Items]
Long Lived Assets Held-for-sale, Impairment Charge				593,201	635,966
Impairment of Long-Lived Assets Held-for-use	365,976	211,491
Property, Plant and Equipment, Net, Total	2,288,632	2,200,576		2,288,632	2,716,557	2,957,789
Vessels [Member] | International Product Carriers Segment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, Total		303,182
Vessels [Member] | International Product Carriers Segment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, Total		223,000
Vessels [Member] | International Product Carriers Segment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, Total		80,182
Vessels [Member] | International Crude Tankers Segment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, Total	925,223	819,050	[1],[2]	925,223
Vessels [Member] | International Crude Tankers Segment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, Total		343,167
Vessels [Member] | International Crude Tankers Segment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, Total		56,362
Vessels [Member] | International Crude Tankers Segment [Member] | Very Large Crude Carrier Vessel [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, Total	557,952	494,604		557,952
Vessels [Member] | International Crude Tankers Segment [Member] | Aframaxes Vessel [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, Total	222,103	202,928		222,103
Vessels [Member] | International Crude Tankers Segment [Member] | Securities Pledged as Collateral [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, Total		526,036
Vessels [Member] | International Crude Tankers Segment [Member] | Securities Pledged as Collateral [Member] | Very Large Crude Carrier Vessel [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, Total		802,604
Vessels [Member] | International Crude Tankers Segment [Member] | Securities Pledged as Collateral [Member] | Handysize Product Carrier Vessel [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net, Total		$478,473
[1]	Includes one ULCC, eight VLCCs, seven Aframaxes and seven Panamaxes that are pledged as collateral under both the OIN Revolver Facility due on February 5, 2019 and the OIN Secured Term Loan due on August 5, 2019 with an aggregate carrying value of $802,604.
[2]	The International Flag Crude Tankers segment and the International Flag Product Carriers segment include vessels with an aggregate carrying value of $399,529 and $303,182, respectively, which the Company believes exceeds their aggregate market values of approximately $343,167 and $223,000, by $56,362 and $80,182, respectively.

EQUITY_METHOD_INVESTMENTS_Deta

EQUITY METHOD INVESTMENTS (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Equity Method Investments [Line Items]
Current assets	$165,931	$197,625
Vessels, net	1,512,559	1,576,692
Other assets	57,982	53,274
Total assets	1,736,472	1,827,591
Current liabilities	155,408	179,913
Long-term debt and other non-current liabilities	1,415,798	1,548,484
Equity	165,266	99,194
Total liabilities and equity	$1,736,472	$1,827,591

EQUITY_METHOD_INVESTMENTS_Deta1

EQUITY METHOD INVESTMENTS (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Shipping revenues	$383,424	$384,040	$368,802
Ship operating expenses	-249,704	-248,924	-240,950
Income from vessel operations	133,720	135,116	127,852
Other expense	-1,735	-1,588	-1,419
Interest expense	-51,024	-54,007	-65,936
Net income	$80,961	$79,521	$60,497

EQUITY_METHOD_INVESTMENTS_Deta2

EQUITY METHOD INVESTMENTS (Details Textual) (USD $)	12 Months Ended			1 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 30, 2004	Aug. 29, 2013
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Description Of Principal Activities	Maersk Oil Qatar AS (MOQ) awarded two service contracts to a joint venture between OSG and Euronav NV
Line of Credit Facility, Amount Outstanding	$715,378	$750,576
Effective Portion of Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss			-7,697
Debt Instrument Final Payment		1,250
Debt Instrument Date Of Final Required Payment		31-Aug-15
Guaranty Assets	0	0
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net			0
Increase (Decrease) Due from Affiliates			4,103
Debt Instrument Amount Outstanding	860,774	947,076
Long-term bank financing agreement [Member]
Schedule of Equity Method Investments [Line Items]
Debt Instrument, Periodic Payment		6,250
Debt Instrument, Date of First Required Payment		30-Nov-13
Debt Instrument, Interest Rate, Basis for Effective Rate		50 basis points
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid					45,000
Liquid Natural Gas Carrier Vessel [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage				49.90%
Initial Term Of Contract				25 years
Ti Africa Vessel [Member]
Schedule of Equity Method Investments [Line Items]
Gain (Loss) on Discontinuation of Interest Rate Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net	470	-280	2,216
Ti Asia Vessel [Member]
Schedule of Equity Method Investments [Line Items]
Effective Portion of Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss	2,944	5,064
Qatar Gas Transport Company Limited Nakilat Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Storage Volume	four 216,200 cbm
Qatar Gas Transport Company Limited Nakilat Joint Venture [Member] | Liquid Natural Gas Carrier Vessel [Member] | Minimum [Member]
Schedule of Equity Method Investments [Line Items]
Derivative, Maturity Date	1-Jul-22
Qatar Gas Transport Company Limited Nakilat Joint Venture [Member] | Liquid Natural Gas Carrier Vessel [Member] | Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Derivative, Maturity Date	30-Nov-22
Qatar Gas Transport Company Limited Nakilat Joint Venture and Euronav Nv Joint Venture [Member] | Liquid Natural Gas Carrier Vessel [Member]
Schedule of Equity Method Investments [Line Items]
Line of Credit Facility, Amount Outstanding	715,378	750,576
Derivative, Fixed Interest Rate	4.90%
Euronav Nv Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Equity Method Investment, Description Of Principal Activities	operates four LNG Carriers
Line of Credit Facility, Amount Outstanding	145,396	196,500
Notional Amount of Interest Rate Cash Flow Hedge Derivatives	254,308	304,472
Derivative, Fixed Interest Rate	3.90%
Interest Rate Cash Flow Hedge Liability at Fair Value	13,665	22,083
Guarantor Obligations, Liquidation Proceeds, Percentage	50.00%
Euronav Nv Joint Venture [Member] | Minimum [Member]
Schedule of Equity Method Investments [Line Items]
Derivative, Maturity Date	1-Jul-17
Euronav Nv Joint Venture [Member] | Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Derivative, Maturity Date	30-Sep-17
Alaska Tanker Company LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	37.50%
Qatar Liquefied Gas Company Limited [Member] | Liquid Natural Gas Carrier Vessel [Member]
Schedule of Equity Method Investments [Line Items]
Effective Portion of Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss	58,240	54,199
Gain (Loss) on Discontinuation of Interest Rate Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring, Net	116,819	108,725
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	$693,072	$727,663

VARIABLE_INTEREST_ENTITIES_VIE2

VARIABLE INTEREST ENTITIES ("VIEs") (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Variable Interest Entity [Line Items]
Investments in Affiliated Companies	$334,863	$323,327	$252,398
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Investments in Affiliated Companies	$276,856	$275,261

VARIABLE_INTEREST_ENTITIES_VIE3

VARIABLE INTEREST ENTITIES ("VIEs") (Details 1) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Variable Interest Entity [Line Items]
Other Liabilities	$66,968	$42,189
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Other Liabilities	0
Maximum Exposure to Loss	$356,400

VARIABLE_INTEREST_ENTITIES_VIE4

VARIABLE INTEREST ENTITIES ("VIEs") (Details Textual) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Variable Interest Entity [Line Items]
Number Of Commercial Pools	6
Number Of Joint Ventures	3
Accounts Receivable, Net, Current	$101,513	$147,964
Variable Interest Entity, Not Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Accounts Receivable, Net, Current	$35,859

INTANGIBLE_ASSETS_Details

INTANGIBLE ASSETS (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Beginning Balance	$60,167	$71,975	$77,158
Amortization	-5,350	-5,183	-5,183
Impairment loss		-6,625
Ending Balance	54,817	60,167	71,975
International Crude Tankers Segment [Member]
Beginning Balance	0	7,125	7,625
Amortization	0	-500	-500
Impairment loss		-6,625
Ending Balance	0	0	7,125
U.S. Flag Segment [Member]
Beginning Balance	59,943	64,610	69,277
Amortization	-5,126	-4,667	-4,667
Impairment loss		0
Ending Balance	54,817	59,943	64,610
Other Segment [Member]
Beginning Balance	224	240	256
Amortization	-224	-16	-16
Impairment loss		0
Ending Balance	$0	$224	$240

INTANGIBLE_ASSETS_Details_Text

INTANGIBLE ASSETS (Details Textual) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014
Goodwill And Intangible Assets [Line Items]
Impairment of Intangible Assets, Finite-lived	($6,625)
Finite-Lived Intangible Assets, Gross	93,331	92,000
Finite-Lived Intangible Assets, Accumulated Amortization	33,164	37,183
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		4,600
Finite-Lived Intangible Assets, Amortization Expense, Year Two		4,600
Finite-Lived Intangible Assets, Amortization Expense, Year Three		4,600
Finite-Lived Intangible Assets, Amortization Expense, Year Four		4,600
Finite-Lived Intangible Assets, Amortization Expense, Year Five		4,600
International Crude Tankers Segment [Member]
Goodwill And Intangible Assets [Line Items]
Impairment of Intangible Assets, Finite-lived	($6,625)

DEBT_Details

DEBT (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Long-term Debt	$1,668,667	[1]	$2,564,559	[2],[3]
Less current portion	-12,314	[1]	0	[3]
Long-term portion	1,656,353	[1]	0	[3]
OBS term loan [Member]
Long-term Debt	598,505	[1]	0	[3]
OIN term loan [Member]
Long-term Debt	624,162	[1]	0	[3]
Notes 8.125 Percent Due 2018 [Member]
Long-term Debt	300,000	[1]	297,102	[3]
Notes 7.50 Percent Due 2024 [Member]
Long-term Debt	784	[1]	146,000	[3]
Election 1 Notes 7.50 Percent Due 2021 [Member]
Long-term Debt	6,508	[1]	0	[3]
Election 2 Notes 7.50 Percent Due 2021 [Member]
Long-term Debt	138,708	[1]	0	[3]
Unsecured Debt [Member]
Long-term Debt	0	[1]	1,489,000	[3]
Debentures 8.75 Percent Due 2013 [Member]
Long-term Debt	0	[1]	63,603	[2],[3]
Floating Rate Secured Term Loan Due Through 2023 [Member]
Long-term Debt	$0	[1]	$565,956	[3]
[1]	The weighted average effective interest rate for debt outstanding as of December 31, 2014 was 6.21%.
[2]	Debt (reflects add back of $2,909 of original issue discount) classified as liabilities subject to compromise at December 31, 2013.
[3]	Classified as liabilities subject to compromise as of December 31, 2013.

DEBT_Details_1

DEBT (Details 1)	12 Months Ended
	Dec. 31, 2014
OIN Revolver Facility [Member] | Base Rate [Member] | Floor [Member]
Debt Instrument, Basis Spread on Variable Rate	2.00%
OIN Revolver Facility [Member] | Base Rate [Member] | Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	3.50%
OIN Revolver Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Floor [Member]
Debt Instrument, Basis Spread on Variable Rate	1.00%
OIN Revolver Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	4.50%
OIN Term Loan [Member] | Base Rate [Member] | Floor [Member]
Debt Instrument, Basis Spread on Variable Rate	2.00%
OIN Term Loan [Member] | Base Rate [Member] | Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	3.75%
OIN Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Floor [Member]
Debt Instrument, Basis Spread on Variable Rate	1.00%
OIN Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	4.75%
Us Flag [Member] | OBS Term Loan [Member] | Base Rate [Member] | Floor [Member]
Debt Instrument, Basis Spread on Variable Rate	2.00%
Us Flag [Member] | OBS Term Loan [Member] | Base Rate [Member] | Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	3.25%
Us Flag [Member] | OBS Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Floor [Member]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Us Flag [Member] | OBS Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	4.25%
Us Flag [Member] | OBS ABL Facility [Member] | Base Rate [Member] | Minimum [Member] | Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	1.25%
Us Flag [Member] | OBS ABL Facility [Member] | Base Rate [Member] | Maximum [Member] | Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	1.75%
Us Flag [Member] | OBS ABL Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	2.25%
Us Flag [Member] | OBS ABL Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Applicable Margin [Member]
Debt Instrument, Basis Spread on Variable Rate	2.75%

DEBT_Details_2

DEBT (Details 2) (USD $)

3 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2014

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Reorganization expense

$6,338

$49,756

[1]

$86,123

[1]

$29,256

[1]

$90,341

[2]

$14,705

[2]

$37,503

[2]

$184,621

[2]

$171,473

$327,170

$41,113

Unsecured Revolving Credit Facility [Member]

Contractual interest (including default interest)

73,637

78,625

Reorganization expense

0

Debtor Reorganization Items, Provision for Expected Allowed Claims

78,625

13,218

Unsecured Senior Notes [Member]

Contractual interest (including default interest)

73,660

92,220

Reorganization expense

14,181

Debtor Reorganization Items, Provision for Expected Allowed Claims

$106,401

$36,825

[1]

The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.

[2]

Also discussed in Note 2, the Company adjusts its accrued liabilities relating to rejected executory contracts when new information becomes available. In the fourth quarter, the Company increased its accruals by $69,154 based upon such new information.

DEBT_Details_3

DEBT (Details 3) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Shedule Of Long Term Debt Maturities Repayments Of Principal [Line Items]
Long-term Debt	$1,668,667	[1]	$2,564,559	[2],[3]
Standby Letters of Credit [Member]
Shedule Of Long Term Debt Maturities Repayments Of Principal [Line Items]
2015	12,314
2016	12,314
2017	12,314
2018	312,314
2019	1,175,963
Thereafter	146,000
Long-term Debt	$1,671,219
[1]	The weighted average effective interest rate for debt outstanding as of December 31, 2014 was 6.21%.
[2]	Debt (reflects add back of $2,909 of original issue discount) classified as liabilities subject to compromise at December 31, 2013.
[3]	Classified as liabilities subject to compromise as of December 31, 2013.

DEBT_Details_Textual

DEBT (Details Textual) (USD $)	3 Months Ended																12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2006	Dec. 30, 2006
Debt Instrument [Line Items]
Interest Expense									$17,168
Long-term Line of Credit	715,378								750,576								715,378	750,576
Increase Decrease In Adequate Payment																	12,731
Reorganization Items, Total	6,338		49,756	[1]	86,123	[1]	29,256	[1]	90,341	[2]	14,705	[2]	37,503	[2]	184,621	[2]	171,473	327,170	41,113
Debt Instrument, Unamortized Discount	2,909																2,909
Interest Expense, Total	28,746	[3]	29,111	[1],[3]	174,511	[1],[3]	123	[1],[3]	28	[4]	3	[4]	31	[4]	288	[4]	232,491	350	93,421
Interest Paid, Net																	209,716	0	75,278
Line of Credit Facility, Interest Rate Description																	Interest on the Exit Facilities is calculated, at the Company’s option, based upon (i) an alternate base rate (“ABR”) plus the applicable margin or (ii) Adjusted LIBOR plus the applicable margin. ABR is defined as the highest of (i) the Base Rate (i.e., the prime rate published in The Wall Street Journal), (ii) the Federal Funds Effective Rate plus 0.50%, (iii) the one-month Adjusted LIBOR Rate plus 1.00% and (iv) in the case of the OBS Term Loan, the OIN Term Loan and the OIN Revolver Facility, 2.00% per annum. The U.S. Flag OBS ABL Facility applicable margin varies based upon undrawn availability under the commitment and is subject to certain pricing adjustments. The OBS ABL Facility provides for quarterly payment of commitment fees at a rate of (x) 0.50% for each quarter during which the daily average Total Revolving Exposure is less than 50% of Total Revolving Commitments and (v) 0.375% for each quarter during which the daily average the Total Resolving Exposure is greater than or equal to 50% of Total Revolving Commitments (all defined terms in this sentence shall have the meanings given to such terms in the OBS ABL Facility).
OBS term loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount	1,480																1,480
Interest Paid																	8,094
Secured Long-term Debt, Noncurrent	75,000																75,000
Line of Credit Facility, Expiration Date																	5-Aug-19
OIN term loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount	1,071																1,071
Interest Paid																	9,239
Proceeds from Sales of Assets, Investing Activities																	5,000
Line of Credit Facility, Expiration Date																	5-Feb-19
OIN term loan [Member] | Maximum [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	75,000																75,000
OIN term loan [Member] | Minimum [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	25,000																25,000
OBS ABL Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	25,000																25,000
OBS ABL Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	10,000																10,000
OIN Revolver Facility [Member]
Debt Instrument [Line Items]
Debt Instrument, Collateral Amount	500,000																500,000
Line of Credit Facility, Commitment Fee Percentage																	0.50%
OIN Revolver Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	75,000																75,000
OIN Revolver Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	25,000																25,000
Secured Debt [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	603,000																603,000
Term Loan [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	628,375																628,375
Term loan 1 [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	50,000																50,000
Asset Based Revolving Loan [Member]
Debt Instrument [Line Items]
Secured Long-term Debt, Noncurrent	75,000																75,000
Election 1 Noteholder [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%								7.50%								7.50%	7.50%
Election 2 Noteholders [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%								7.50%								7.50%	7.50%
Letter of Credit [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	9,146																9,146
CEXIM Term Loan [Member]
Debt Instrument [Line Items]
Long-term Line of Credit	311,751																311,751
Increase Decrease In Adequate Payment																	12,731
Reorganization Items, Total																	5,456
Debtor Reorganization Items, Post Petition Interest																	4,462
Interest Expense for Postpetition Contractual Interest																	14,915	0	8,588
Minimum Required Loan To Value Ratio																	91.00%
CEXIM Term Loan [Member] | Secured Term Loan Facilities [Member]
Debt Instrument [Line Items]
Increase Decrease In Adequate Payment																	10,452
DSF Term Loan [Member]
Debt Instrument [Line Items]
Interest Expense																	5,545	0	3,316
Long-term Line of Credit	266,936																266,936
Increase Decrease In Adequate Payment																	9,466
Reorganization Items, Total																	4,627
Debtor Reorganization Items, Post Petition Interest																	882
Minimum Required Loan To Value Ratio																	97.00%
DSF Term Loan [Member] | Secured Term Loan Facilities [Member]
Debt Instrument [Line Items]
Increase Decrease In Adequate Payment																	4,662
8.125% Notes due 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date																	30-Mar-18
Debt Instrument, Interest Rate, Stated Percentage	8.13%								8.13%								8.13%	8.13%
Debt Instrument, Face Amount	300,000																300,000
Debt Instrument, Unamortized Discount									2,898									2,898
Debt Instrument, Redemption Price, Percentage																	101.00%
Notes 7.50% Due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date																	15-Feb-24
Debt Instrument, Interest Rate, Stated Percentage	7.50%								7.50%								7.50%	7.50%
Debt Instrument, Face Amount	146,000																146,000
8.75% Debentures due 2013 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date																	1-Dec-13
Debt Instrument, Interest Rate, Stated Percentage	8.75%								8.75%								8.75%	8.75%
Debt Instrument, Face Amount	63,603																63,603
Debt Instrument, Unamortized Discount									11									11
Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Line of Credit									1,489,000									1,489,000
Reorganization Items, Total																	0
Interest Expense for Postpetition Contractual Interest					73,637												78,625
Line of Credit Facility, Maximum Borrowing Capacity																					1,800,000
Line Of Credit Maturity Period																				7 years
Unsecured Senior Notes [Member]
Debt Instrument [Line Items]
Reorganization Items, Total																	14,181
Interest Expense for Postpetition Contractual Interest					73,660												92,220
Exit Financing [Member]
Debt Instrument [Line Items]
Payments of Debt Issuance Costs																	2,748
Payments for Fees																	51,963
Interest Expense, Total																	32,367
Exit Financing [Member] | OBS Term Loan And OBS ABL Facility [Member]
Debt Instrument [Line Items]
Interest Expense																	15,282
Exit Financing [Member] | OIN Term Loan and OIN Revolver Facility [Member]
Debt Instrument [Line Items]
Interest Expense																	$17,085
Long-term Debt [Member]
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate	6.21%																6.21%
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
[2]	Also discussed in Note 2, the Company adjusts its accrued liabilities relating to rejected executory contracts when new information becomes available. In the fourth quarter, the Company increased its accruals by $69,154 based upon such new information.
[3]	Interest expense of $73,637 for the Unsecured Revolving Credit Facility and interest expense of $73,660 for the Unsecured Senior Notes relating to post-petition contractual interest (which includes default interest) were recorded in the second quarter.
[4]	As discussed in Note 2, "Chapter 11 Filing and Emergence from Bankruptcy," and Note 10, "Debt," the Debtors filed a petition for relief under Chapter 11 and its debt agreements were classified as liabilities subject to compromise as of December 31, 2013. For the quarter ended December 31, 2013, interest expense of $17,168 was accordingly not recorded.

FAIR_VALUE_OF_FINANCIAL_INSTRU2

FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES (Details) (USD $)	Dec. 31, 2014		Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$512,404	[1]	$601,927
8.125% notes due 2018 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	-294,300
7.5% notes due 2024 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	-626
7.5% Election 1 notes due 2021 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	-5,511
7.5% Election 2 notes due 2021 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	-131,773
OBS Term Loan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Payable, Fair Value Disclosure	-589,863
OIN Term Loan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Payable, Fair Value Disclosure	-618,981
Unsecured Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure			-559,441
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	512,404	[1]	601,927
Fair Value, Inputs, Level 1 [Member] | 8.125% notes due 2018 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | 7.5% notes due 2024 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | 7.5% Election 1 notes due 2021 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | 7.5% Election 2 notes due 2021 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | OBS Term Loan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Payable, Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | OIN Term Loan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Payable, Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Unsecured Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure			0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	0	[1]	0
Fair Value, Inputs, Level 2 [Member] | 8.125% notes due 2018 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	-294,300
Fair Value, Inputs, Level 2 [Member] | 7.5% notes due 2024 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	-626
Fair Value, Inputs, Level 2 [Member] | 7.5% Election 1 notes due 2021 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	-5,511
Fair Value, Inputs, Level 2 [Member] | 7.5% Election 2 notes due 2021 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure	-131,773
Fair Value, Inputs, Level 2 [Member] | OBS Term Loan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Payable, Fair Value Disclosure	-589,863
Fair Value, Inputs, Level 2 [Member] | OIN Term Loan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Payable, Fair Value Disclosure	-618,981
Fair Value, Inputs, Level 2 [Member] | Unsecured Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes Payable, Fair Value Disclosure			($559,441)
[1]	Includes restricted cash of $123,178.

FAIR_VALUE_OF_FINANCIAL_INSTRU3

FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES (Details 1) (Interest Rate Cap [Member], USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Other Assets [Member]
Derivative Instruments In Hedges Long Term Portion Assets At Fair Value	$2,115
Derivative Instruments in Hedges, Assets, at Fair Value	2,115
Derivative Instruments Not Designated as Hedging Instruments, Asset, at Fair Value	0
Derivative Asset	2,115
Other Liabilities [Member]
Derivative Instruments In Hedges Long Term Portion Liabilities At Fair Value	0
Derivative Instruments in Hedges, Liabilities, at Fair Value	0
Other Derivatives Not Designated as Hedging Instruments Liabilities at Fair Value	0
Derivative Liability	$0

FAIR_VALUE_OF_FINANCIAL_INSTRU4

FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Unrealized losses on derivative instruments	($21,850)	$19,114	($20,709)
Interest Rate Cap [Member]
Unrealized losses on derivative instruments	-478	0	0
Interest Rate Swap [Member]
Unrealized losses on derivative instruments	($21,372)	$19,114	($20,709)

FAIR_VALUE_OF_FINANCIAL_INSTRU5

FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012
Effective Portion of Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss	($7,697)
Ineffective Portion	0
Interest Rate Swap [Member] | Interest Expense [Member]
Effective Portion of Gain/(Loss) Reclassified from Accumulated Other Comprehensive Loss	-7,697
Ineffective Portion	$0

FAIR_VALUE_OF_FINANCIAL_INSTRU6

FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES (Details 4) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Gain/(loss) recognized on derivatives not designated as hedging instruments	$0	$0	$1,376
Forward Freight Agreements and Bunker Swaps [Member] | Other Income [Member]
Gain/(loss) recognized on derivatives not designated as hedging instruments	$0	$0	$1,376

FAIR_VALUE_OF_FINANCIAL_INSTRU7

FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES (Details 5) (Fair Value, Measurements, Recurring [Member], USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Available-for-sale Securities	$2,115
Fair Value, Inputs, Level 1 [Member]
Available-for-sale Securities	0
Fair Value, Inputs, Level 2 [Member]
Available-for-sale Securities	$2,115	[1]
[1]	For interest rate caps, fair values are derived using valuation models that utilize the income valuation approach. These valuation models take into account contract terms such as maturity, as well as other inputs such as interest rate yield curves and creditworthiness of the counterparty and the Company.

FAIR_VALUE_OF_FINANCIAL_INSTRU8

FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES (Details 6) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2012
Vessels held for use, Impairment Charges			$365,976			$278,345
Other fixed assets held for use, Impairment Charges			0	366,439		279,382
Intangible assets, Impairment Charges				-6,625
Goodwill and other intangibles impairment charge	9,589		0	16,214		0
International Crude Tankers Impairment [Member]
Vessels held for use, Fair Value	359,252	[1]		359,252	[1]
Other fixed assets held for use, Fair Value	750	[2]		750	[2]
Intangible assets, Fair Value	0	[2]		0	[2]
Goodwill, Fair Value	0	[3]		0	[3]
Vessels held for use, Impairment Charges				-327,675	[1]
Other fixed assets held for use, Impairment Charges				-462	[2]
Intangible assets, Impairment Charges				-6,625	[2]
Goodwill and other intangibles impairment charge				-9,589	[3]
International Crude Tankers Impairment [Member] | Fair Value, Inputs, Level 2 [Member]
Vessels held for use, Fair Value	359,252	[1]		359,252	[1]
Other fixed assets held for use, Fair Value	0	[2]		0	[2]
Intangible assets, Fair Value	0	[2]		0	[2]
Goodwill, Fair Value	0	[3]		0	[3]
International Crude Tankers Impairment [Member] | Fair Value, Inputs, Level 3 [Member]
Vessels held for use, Fair Value	0	[1]		0	[1]
Other fixed assets held for use, Fair Value	750	[2]		750	[2]
Intangible assets, Fair Value	0	[2]		0	[2]
Goodwill, Fair Value	0	[3]		0	[3]
International Product Carriers Impairment [Member]
Vessels held for use, Fair Value	67,947	[1]		67,947	[1]
Vessels held for use, Impairment Charges				-38,301	[1]
International Product Carriers Impairment [Member] | Fair Value, Inputs, Level 2 [Member]
Vessels held for use, Fair Value	67,947	[1]		67,947	[1]
International Product Carriers Impairment [Member] | Fair Value, Inputs, Level 3 [Member]
Vessels held for use, Fair Value	$0	[1]		$0	[1]
[1]	Aggregate pre-tax impairment charges of $365,976 were recorded in the fourth quarter of 2013, related to 15 vessels held for use in the International Crude Tanker and International Product Carriers segments. The fair value measurement used to determine the impairment for the vessels held for use was based upon a market approach, which utilized the expected sales prices of the vessels obtained from third party appraisals. Because sales of vessels occur somewhat infrequently, the expected sales prices are considered to be Level 2.
[2]	Aggregate pre-tax impairment charges of $7,087 were recorded in the fourth quarter of 2013, including $6,625 related to customer relationship intangible assets and $462 related to transportation equipment held for use in the International Crude Tanker's Lightering business. The fair value measurement used to determine the impairment for the intangible assets and equipment held for use was based upon the income approach, which utilized cash flow projections consistent with the most recent projections of the Company, and a discount rate equivalent to a market participant's weighted average cost of capital. Because the Company uses its own cash flow projections, the cash flow projections are considered to be Level 3.
[3]	Aggregate pre-tax impairment charges of $9,589 were recorded in the fourth quarter of 2013, related to goodwill of the International Crude Tanker's Lightering business. The fair value measurement used to determine the impairment for goodwill was based upon the income approach, which utilized cash flow projections consistent with the most recent projections of the Company, and a discount rate equivalent to a market participant's weighted average cost of capital. Because the Company uses its own cash flow projections, the cash flow projections are considered to be Level 3.

FAIR_VALUE_OF_FINANCIAL_INSTRU9

FAIR VALUE OF FINANCIAL INSTRUMENTS, DERIVATIVES AND FAIR VALUE DISCLOSURES (Details Textual) (USD $)	12 Months Ended			3 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2011	Sep. 30, 2012
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Outstanding Interest Rate Swap			$3,566
Dedesignation Of Interest Rate Swap Agreements	0	0	1,866
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total	-83,380	-69,344	-113,781	-69,344	-119,307
Interest Rate Cap Termination Date	5-Feb-18
Interest Rate Cap Agreements Start Date	5-Feb-17
8.125% notes due 2018 [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	8.13%
7.5% notes due 2024 [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%
7.5% Election 1 notes due 2021 [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%
7.5% Election 2 notes due 2021 [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%
Transportation Equipment [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Pre Ta xImpairment Charges		462
Customer-Related Intangible Assets [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Pre Ta xImpairment Charges		6,625
Interest Rate Swap [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Derivative, Notional Amount	219,940		30,000
Derivative, Lower Fixed Interest Rate Range			3.30%
Derivative, Higher Fixed Interest Rate Range			4.70%
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total						331
Interest Rate Cap [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Increase Derivative Cap Interest Rate	3.00%
OSG Bulk Ships, Inc [Member] | Interest Rate Cap [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Derivative Liability, Notional Amount	375,000
Derivative, Cap Interest Rate	2.50%
OSG International, Inc [Member] | Interest Rate Cap [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Derivative Liability, Notional Amount	400,000
Derivative, Cap Interest Rate	2.50%
Vessels Held For Use [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Pre Ta xImpairment Charges				365,976
Number Of Vessels				15
Other Fixed Assets Held For Sale [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Pre Ta xImpairment Charges				7,087
Goodwill [Member]
Fair Value Of Financial Instruments Derivatives And Fair Value Disclousres [Line Items]
Pre Ta xImpairment Charges		$9,589

ACCOUNTS_PAYABLE_ACCRUED_EXPEN2

ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts Payable Accrued Expenses And Other Current Liabilities [Line Items]
Accounts payable	$4,422	$22,002
Payroll and benefits	19,060	30,589
Interest	21,218	0
Due to owners on chartered in vessels	3,776	3,452
Accrued drydock and repair costs	1,983	4,335
Bunkers and lubricants	1,626	7,907
Charter revenues received in advance	15,693	18,682
Insurance	920	573
Accrued vessel expenses	4,233	7,529
Bankruptcy claims accruals	13,506	0
Accrued General And Administrative Expenses	6,895	16,380
Other	2,734	10,133
Accounts Payable and Other Accrued Liabilities, Current	$96,066	$121,582

TAXES_Details

TAXES (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Foreign	$455,565	($662,480)	($484,306)
Domestic	-722,646	9,505	2,711
Loss before Income Taxes	($267,081)	($652,975)	($481,595)

TAXES_Details_1

TAXES (Details 1) (USD $)	3 Months Ended											12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current												$32,376	$7,347	($28,270)
Deferred												82,432	7,398	29,751
Income Tax Expense (Benefit)	$2,179	$63,544	[1],[2]	$50,414	[1],[2]	($1,329)	[1],[2]	$8,958	($1,947)	$1,899	$5,835	$114,808	$14,745	$1,481
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
[2]	As discussed in Note 13, "Taxes," there was an income tax benefit for the year ended December 31, 2014 due to a) a change in the mix of U.S. and foreign income and losses, primarily occurring in the second quarter and b) the Company released its deferred tax liability for undistributed earnings of its foreign subsidiaries attributable to the excess of the $1,500,000 facility limit over the cumulative potential deemed dividends arising from drawdowns by OSG under such facility and recorded an income tax benefit of $55,602 in the third quarter.

TAXES_Details_2

TAXES (Details 2) (USD $)	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deferred tax liabilities:
Vessels and other property	$289,229		$290,620
Unremitted earnings of foreign subsidiaries	0		55,602
Prepaid expenditures	15,816		12,010
Post-petition interest expense	0		35,368
OtherBnet	9,635		9,966
Total deferred tax liabilities	314,680	1,500,000	403,566
Deferred tax assets:
Loss carryforwards	26,419		17,052
Employee compensation and benefit plans	14,263		32,403
Financing and professional fees	4,386		832
Accrued expenses and other	5,185		2,266
Total deferred tax assets	50,253		52,553
Valuation allowance	13,538		13,477
Net deferred tax assets	36,715		39,076
Net deferred tax liabilities	277,965		364,490
Current deferred tax assets	5,312		5,464
Noncurrent deferred tax liabilities	283,277		369,954
Net deferred tax liabilities	$277,965		$364,490

TAXES_Details_3

TAXES (Details 3)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
U.S. federal statutory income tax rate	35.00%		35.00%		35.00%
Adjustments due to:
Foreign income not subject to tax	59.70%	[1]	-36.20%	[1]	-31.30%	[1]
State taxes, net of federal benefit	0.60%		0.50%		-1.80%
Interest on unrecognized tax benefits	-3.40%		4.90%		-1.10%
Nondeductible reorganization costs	-6.70%		-1.40%		-0.40%
Foreign income and repatriations taxed in the U.S.	-0.90%		-1.60%		1.70%
Unremitted earnings of foreign subsidiaries	20.80%		0.00%		0.00%
Deferred compensation	-1.90%		0.00%		0.00%
Tax examination settlement	1.90%		0.00%		0.00%
Payments as guarantor	-62.60%		0.00%		0.00%
Change in tax status of subsidiary	0.00%		0.90%		-0.10%
U.S. income subject to tonnage tax	0.80%		0.40%		-0.60%
Other	-0.30%		-0.20%		-1.10%
Effective tax rate	43.00%		2.30%		0.30%
[1]	In 2014, includes cancellation of indebtedness income associated with payments as guarantor which is separately reflected in the reconciliation of the effective income tax rate.

TAXES_Details_4

TAXES (Details 4) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Balance of unrecognized tax benefits as of January 1,	$391,830	$374,826
Increases for positions taken in prior years	2,876	59
Decreases for positions taken in prior years	0	-14,240
Increases for positions related to the current year	180,509	31,838
Amounts of decreases related to settlements	-354,886	0
Reductions due to lapse of statutes of limitations	-5,001	-653
Balance of unrecognized tax benefits as of December 31,	$215,328	$391,830

TAXES_Details_Textual

TAXES (Details Textual) (USD $)	3 Months Ended											12 Months Ended			1 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 31, 2014
Income Tax Contingency [Line Items]
Bankruptcy Claims, Amount of Claims Filed												$1,500
Income Taxes Paid												266,867	60,687	293
Deferred Tax Liabilities, Gross	314,680	1,500,000						403,566				314,680	403,566
Current Federal Tax Expense (Benefit)													58,747
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	438,363											438,363
Deferred Tax Assets, Operating Loss Carryforwards	26,419							17,052				26,419	17,052
Deferred Tax Assets, Valuation Allowance	13,538							13,477				13,538	13,477
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	211,075							28,527				211,075	28,527
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities												354,886	0
Liability For Unrecognized Tax Benefits								234,623					234,623
Unrecognized Tax Benefits, Interest on Income Taxes Expense												534	14,923
Operating Loss Carryforwards Expiration Period												The federal net operating loss carryforwards expire in 2034
Increased Decreased In Valuation Allowance												61	5,213	1,635
Reserve Non Current For Uncertain Tax Positions	34,520							26,585				34,520	26,585
Income Tax Expense (Benefit)	-2,179	-63,544	[1],[2]	-50,414	[1],[2]	1,329	[1],[2]	-8,958	1,947	-1,899	-5,835	-114,808	-14,745	-1,481
Internal Revenue Service (IRS) [Member]
Income Tax Contingency [Line Items]
Income Taxes Paid												270,465
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	28,473							49,101				28,473	49,101
Interest Paid												15,259
U.S. Federal [Member]
Income Tax Contingency [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	403,634							130,021				403,634	130,021
Deferred Tax Assets, Valuation Allowance	13,538							13,477				13,538	13,477
Unremitted Foreign Earnings [Member]
Income Tax Contingency [Line Items]
Income Tax Expense (Benefit)												55,602
Foreign Operation [Member]
Income Tax Contingency [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	45,005							42,102				45,005	42,102
OIN [Member]
Income Tax Contingency [Line Items]
Bankruptcy Claims, Amount of Claims Filed															477,835
Revolving Credit Facility [Member]
Income Tax Contingency [Line Items]
Bankruptcy Claims, Amount of Claims Filed												1,500,000
Deferred Tax Liabilities, Gross	$1,500,000											$1,500,000
From January 1, 1987 Through December 31, 2004 [Member]
Income Tax Contingency [Line Items]
Equity Method Investment, Ownership Percentage	50.00%											50.00%
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
[2]	As discussed in Note 13, "Taxes," there was an income tax benefit for the year ended December 31, 2014 due to a) a change in the mix of U.S. and foreign income and losses, primarily occurring in the second quarter and b) the Company released its deferred tax liability for undistributed earnings of its foreign subsidiaries attributable to the excess of the $1,500,000 facility limit over the cumulative potential deemed dividends arising from drawdowns by OSG under such facility and recorded an income tax benefit of $55,602 in the third quarter.

CAPITAL_STOCK_AND_STOCK_COMPEN2

CAPITAL STOCK AND STOCK COMPENSATION (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested Shares Outstanding Beginning Balance	245,499	780,594	509,060
Granted	0		446,409
Vested	-82,722	-155,932	-159,530
Forfeited	-42,887	-379,163	-15,345
Cancelled	-119,890
Nonvested Shares Outstanding Ending Balance	0	245,499	780,594
Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested Shares Outstanding Beginning Balance	0
Granted	521,346
Vested	0
Forfeited	0
Cancelled	0
Nonvested Shares Outstanding Ending Balance	521,346

CAPITAL_STOCK_AND_STOCK_COMPEN3

CAPITAL STOCK AND STOCK COMPENSATION (Details 1)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding Beginning Balance	680,956	2,204,781	1,868,687
Granted	0	0	377,653
Forfeited	-39,848	-1,523,825	-41,559
Exercised	0	0	0
Cancelled	-641,108
Options Outstanding Ending Balance	0	680,956	2,204,781
Options Exercisable	0
Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding Beginning Balance	0
Granted	453,586
Forfeited	0
Exercised	0
Cancelled	0
Options Outstanding Ending Balance	453,586
Options Exercisable	0

CAPITAL_STOCK_AND_STOCK_COMPEN4

CAPITAL STOCK AND STOCK COMPENSATION (Details Textual) (USD $)	3 Months Ended															12 Months Ended			1 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 29, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reorganization Items, Total	$6,338	$49,756	[1]	$86,123	[1]	$29,256	[1]	$90,341	[2]	$14,705	[2]	$37,503	[2]	$184,621	[2]	$171,473	$327,170	$41,113
Common Stock, Shares Authorized	120,000,000							120,000,000								120,000,000	120,000,000
Compensation Expense Net of Reduction Estimated Forfeiture																279	3,935
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term																9 years 8 months 12 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$3.65							$39.48								$3.65	$39.48
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	1,917															1,917
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition																2 years 6 months 11 days
Minimum Demad For One Selling Security Holder	25,000															25,000
Minimum Demand For More Than One Selling Security Holder	75,000															75,000
Stock Options, Compensation Expense (Income)																338	-192	1,764
U.S. Citizens [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity Method Investment, Ownership Percentage	77.00%															77.00%
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period																		45,000	196,349
Market Price Per Common Share																		$10
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period																			453,586
Senior Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments for Restructuring																		1,307
Performance Based Restricted Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Adjustments to Additional Paid in Capital Share Based Compensation Expense Gants of Restricted Stock																2,467	61	6,115
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period																		401,409
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value																		$10.09
Restricted Stock [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Exercise Price																$10	$10	$39.41
Restricted Stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Exercise Price																$43.40	$43.40	$64.92
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value																$1.58		$3.83
Share Based Compensation Arrangement by Share Based Payment Award Fair Value Assumptions Expected Volatility Factors																0.42		0.54
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate																2.20%		1.20%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate																0.00%		1.90%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term																6 years		6 years
Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	1,000,000,000															1,000,000,000
Deemed Fair Value of Common Stock																$3
Class of Warrant or Right, Exercise Price of Warrants or Rights	$0.01															$0.01
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period																324,997
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value																975
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period																521,346
Investment Options, Exercise Price																			3.65
Common Stock, Capital Shares Reserved for Future Issuance	38,503,722															38,503,722
Common Class B [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	7,926,805															7,926,805
Stock Incentive Plan 2004 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reorganization Items, Total																$1,796
Management Incentive Compensation Plan [Member] | Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	37,000,000															37,000,000
Non-Employee Director Incentive Compensation Plan [Member] | Common Class A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	3,000,000															3,000,000
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
[2]	Also discussed in Note 2, the Company adjusts its accrued liabilities relating to rejected executory contracts when new information becomes available. In the fourth quarter, the Company increased its accruals by $69,154 based upon such new information.

ACCUMULATED_OTHER_COMPREHENSIV2

ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized losses on derivative instruments, substantially entered into by the Companybs equity method joint venture investees	($61,547)	($59,263)	($98,937)	($104,554)
Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement benefit plans)	-21,833	-10,081	-14,893	-14,787
Accumulated other comprehensive loss	($83,380)	($69,344)	($113,781)	($119,307)

ACCUMULATED_OTHER_COMPREHENSIV3

ACCUMULATED OTHER COMPREHENSIVE LOSS (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Unrealized gains/(losses) on available - for-sale securities, Beginning Balance	$0	$49	$34
Unrealized gains/(losses) on available - for-sale securities, Current period change excluding amounts reclassified from other comprehensive loss	0	-181	-836
Unrealized gains/(losses) on available - for-sale securities, Amounts reclassified from accumulated other comprehensive loss	0	132	851
Unrealized gains/(losses) on available - for-sale securities, Total change in accumulated other comprehensive loss	0	-49	15
Unrealized gains/(losses) on available - for-sale securities, Ending Balance	0	0	49
Unrealized losses on cash flow hedges, Beginning Balance	-59,263	-98,937	-104,554
Unrealized losses on cash flow hedges, Current period change excluding amounts reclassified from other comprehensive loss	-21,850	19,114	-20,709
Unrealized losses on cash flow hedges, Amounts reclassified from accumulated other comprehensive loss	19,566	20,560	26,326
Unrealized losses on cash flow hedges, Total change in accumulated other comprehensive loss	-2,284	39,674	5,617
Unrealized losses on cash flow hedges, Ending Balance	-61,547	-59,263	-98,937
Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement plans), Beginning Balance	-10,081	-14,893	-14,787
Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement plans), Current period change excluding amounts reclassified from other comprehensive loss	-11,969	4,336	-409
Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement plans), Amounts reclassified from accumulated other comprehensive loss	217	476	303
Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement plans), Total change in accumulated other comprehensive loss	-11,752	4,812	-106
Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement plans), Ending Balance	-21,833	-10,081	-14,893
Beginning Balance	-69,344	-113,781	-119,307
Current period change excluding amounts reclassified from other comprehensive loss	-33,819	23,269	-21,954
Amounts reclassified from accumulated other comprehensive loss	19,783	21,168	27,480
Total change in accumulated other comprehensive loss	-14,036	44,437	5,526
Ending Balance	($83,380)	($69,344)	($113,781)

ACCUMULATED_OTHER_COMPREHENSIV4

ACCUMULATED OTHER COMPREHENSIVE LOSS (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Items not yet recognized as a component of net periodic benefit cost (pension and other postretirement plans):
Other Comprehensive Income (Loss), before Tax	($19,729)		($21,305)		($29,962)
Other Comprehensive Income (Loss), Tax	-54	[1]	137	[1]	2,482	[1]
Other Income/(expense) [Member]
Unrealized losses on available-for-sale securities:
Impairment recorded relating to securities held by the Company's foreign subsidiaries	0		-132		-851
General and Administrative Expense [Member]
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 or seagoing employees	-260		-678		-526
Vessel expenses [Member]
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 or seagoing employees	97		65		-24
Interest Rate Swap [Member] | Equity in Income of Affiliated Companies [Member]
Unrealized losses on cash flow hedges:
Interest rate swaps entered into by the Company's equity method joint venture investees	-19,566		-20,560		-20,864
Interest Rate Swap [Member] | Interest Expense [Member]
Unrealized losses on cash flow hedges:
Interest rate swaps entered into by the Company's equity method joint venture investees	$0		$0		($7,697)
[1]	The tax (provision)/ benefit relates to the net periodic benefit costs of the Company's pension and postretirement benefit plans as well as interest rate swaps entered into by the Company's domestic subsidiaries

ACCUMULATED_OTHER_COMPREHENSIV5

ACCUMULATED OTHER COMPREHENSIVE LOSS (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
unrealized gains/(losses) on cash flow hedges, Current period change excluding amounts reclassified from accumulated other comprehensive income	($21,850)	$19,114	($20,709)
unrealized gains/(losses) on cash flow hedges, Amounts reclassified from accumulated other comprehensive income	19,566	20,560	26,326
unrealized gains/(losses) on cash flow hedges, Total change in accumulated other comprehensive income	-2,284	39,674	5,617
Items not yet recognized as a component of net periodic benefit cost, Current period change excluding amounts reclassified from accumulated other comprehensive income	-11,969	4,336	-409
Items not yet recognized as a component of net periodic benefit cost, Total change in accumulated other comprehensive income	-11,752	4,812	-106
Tax Expense Benefit [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
unrealized gains/(losses) on cash flow hedges, Current period change excluding amounts reclassified from accumulated other comprehensive income	115	0	131
unrealized gains/(losses) on cash flow hedges, Amounts reclassified from accumulated other comprehensive income	0	0	-2,235
unrealized gains/(losses) on cash flow hedges, Total change in accumulated other comprehensive income	115	0	-2,104
Items not yet recognized as a component of net periodic benefit cost, Current period change excluding amounts reclassified from accumulated other comprehensive income	3,639	-2,899	118
Items not yet recognized as a component of net periodic benefit cost, Amounts reclassified from accumulated other comprehensive income	54	-137	-247
Items not yet recognized as a component of net periodic benefit cost, Total change in accumulated other comprehensive income	$3,693	($3,036)	($129)

ACCUMULATED_OTHER_COMPREHENSIV6

ACCUMULATED OTHER COMPREHENSIVE LOSS (Details Textual) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax	$1,112
Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Net Of Tax	419
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax	29,907
Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Net Of Tax	22,252
Accumulated Other Comprehensive Income Loss Effective Portion Under Net Investment Hedge Reclassified To Earnings During Period	19,083
December 31 2015 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax	235
Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Net Of Tax	118
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Gains (Losses), before Tax	1,152
Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Net Of Tax	$819

LEASES_Details

LEASES (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Bareboat Charters In [Member]
Leases [Line Items]
2015	$97,817
2016	99,038
2017	98,219
2018	93,200
2019	111,819
Thereafter	39,278
Net minimum lease payments	539,371
Operating Days	23183 days
Bareboat Charters In [Member] | One Year From Balance Sheet [Member]
Leases [Line Items]
Operating Days	4745 days
Bareboat Charters In [Member] | More Than One and Within Two Years From Balance Sheet [Member]
Leases [Line Items]
Operating Days	4758 days
Bareboat Charters In [Member] | More Than Two and Within Three Years From Balance Sheet [Member]
Leases [Line Items]
Operating Days	4713 days
Bareboat Charters In [Member] | More Than Three and Within Four Years From Balance Sheet [Member]
Leases [Line Items]
Operating Days	3929 days
Bareboat Charters In [Member] | More Than Four and Within Five Years From Balance Sheet [Member]
Leases [Line Items]
Operating Days	3470 days
Bareboat Charters In [Member] | More Than Five Years From Balance Sheet and Thereafter [Member]
Leases [Line Items]
Operating Days	1568 days
Time Charters In [Member]
Leases [Line Items]
2015	24,581
2016	1,045
Net minimum lease payments	$25,626
Operating Days	2355 days
Time Charters In [Member] | One Year From Balance Sheet [Member]
Leases [Line Items]
Operating Days	2279 days
Time Charters In [Member] | More Than One and Within Two Years From Balance Sheet [Member]
Leases [Line Items]
Operating Days	76 days

LEASES_Details_1

LEASES (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Operating Leases, Future Minimum Payments Receivable [Abstract]
Revenue Days	21750 days
One Year From Balance Sheet [Member]
Operating Leases, Future Minimum Payments Receivable [Abstract]
Revenue Days	9268 days
More Than One and Within Two Years From Balance Sheet [Member]
Operating Leases, Future Minimum Payments Receivable [Abstract]
Revenue Days	4927 days
More Than Two and Within Three Years From Balance Sheet [Member]
Operating Leases, Future Minimum Payments Receivable [Abstract]
Revenue Days	2825 days
More Than Three and Within Four Years From Balance Sheet [Member]
Operating Leases, Future Minimum Payments Receivable [Abstract]
Revenue Days	1719 days
More Than Four and Within Five Years From Balance Sheet [Member]
Operating Leases, Future Minimum Payments Receivable [Abstract]
Revenue Days	933 days
More Than Five Years From Balance Sheet and Thereafter [Member]
Operating Leases, Future Minimum Payments Receivable [Abstract]
Revenue Days	2078 days
Charter Out [Member]
Operating Leases, Future Minimum Payments Receivable [Abstract]
2015	423,230
2016	274,875
2017	180,087
2018	124,536
2019	78,067
Thereafter	176,082
Net minimum lease payments	1,256,877

LEASES_Details_2

LEASES (Details 2) (Office Space [Member], USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Office Space [Member]
Leases [Line Items]
2015	$1,890
2016	1,059
2017	523
2018	314
Net minimum lease payments	$3,786

LEASES_Details_Textual

LEASES (Details Textual) (USD $)	3 Months Ended																12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Sep. 30, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Leases [Line Items]
Reorganization Items, Total	$6,338	$49,756	[1]	$86,123	[1]	$29,256	[1]	$90,341	[2]	$14,705	[2]	$37,503	[2]	$184,621	[2]		$171,473	$327,170	$41,113
Provision for Lease Losses																		3,646
Leasehold Improvements, Gross	1,638																1,638
Interest Expense On Postpetition rejected executory contracts																	7,453
Operating Leases, Rent Expense																	152,016	206,873	370,405
Estimated For Lease Termination Costs								248,839										248,839	30,187
Minimum Percentage Of Barrel Volume																50.00%
Deferred Revenue																27,100
Sunoco Termination Fee																13,300	0	0	13,300
Shipping and Handling Revenue																40,400
Replacement Agreement Runs Period																	Apr-20
Charters In [Member]
Leases [Line Items]
Commitments to charter in vessels, Number of Units	18																18
Reorganization Items, Total																	6,419
Liabilities Subject to Compromise, Other Liabilities								282,599										282,599
Bareboat Charters In [Member]
Leases [Line Items]
Commitments to charter in vessels, Number of Units	13																13
Time Charters In [Member]
Leases [Line Items]
Commitments to charter in vessels, Number of Units	5																5
Charter Out [Member]
Leases [Line Items]
Operating Leases, Future Minimum Payments Receivable, Current	423,230																423,230
Operating Leases, Future Minimum Payments Receivable, in Two Years	274,875																274,875
Operating Leases, Future Minimum Payments Receivable, in Three Years	180,087																180,087
Operating Leases, Future Minimum Payments Receivable, in Four Years	124,536																124,536
Operating Leases, Future Minimum Payments Receivable, in Five Years	78,067																78,067
Operating Leases, Future Minimum Payments Receivable, Thereafter	176,082																176,082
Charter Out [Member] | Contract of Affreightmen [Member]
Leases [Line Items]
Operating Leases, Future Minimum Payments Receivable, Current	26,559																26,559
Operating Leases, Future Minimum Payments Receivable, in Two Years	22,023																22,023
Operating Leases, Future Minimum Payments Receivable, in Three Years	22,347																22,347
Operating Leases, Future Minimum Payments Receivable, in Four Years	22,698																22,698
Operating Leases, Future Minimum Payments Receivable, in Five Years	23,031																23,031
Operating Leases, Future Minimum Payments Receivable, Thereafter	6,356																6,356
Office Space [Member]
Leases [Line Items]
Reorganization Items, Total																	646
Operating Leases, Rent Expense																	$2,264	$3,959	$4,550
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
[2]	Also discussed in Note 2, the Company adjusts its accrued liabilities relating to rejected executory contracts when new information becomes available. In the fourth quarter, the Company increased its accruals by $69,154 based upon such new information.

PENSION_AND_OTHER_POSTRETIREME2

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Multiemployer Plan, Period Contributions	$1,390		$1,382		$1,306
Multiemployer Plans, Certified Zone Status	Green	[1]	Green	[1]
American Maritime Officers Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer Identification And Pension Plan Number	13-1936709
Multiemployer Plan, Period Contributions	994		975		890
Multiemployer Plans, Certified Zone Status	Yellow	[1]	Yellow	[1]
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan	Implemented
Marine Engineers Beneficial Association Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer Identification And Pension Plan Number	51-6029896
Multiemployer Plan, Period Contributions	0		0		0
Multiemployer Plans, Certified Zone Status	Green	[1]
Seafarers Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employer Identification And Pension Plan Number	13-6100329
Multiemployer Plan, Period Contributions	$396		$407		$416
Multiemployer Plans, Certified Zone Status			Green	[1]
[1]	A "Red" Zone Status plan is a plan that is funded less than 65% and currently has a funding deficiency or a funding deficiency that is projected in the near term. A "Yellow" Zone Status plan is a plan that has a funding ratio between 65% and 80%. A "Green" Zone Status plan is a plan that is 80% funded or more.

PENSION_AND_OTHER_POSTRETIREME3

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Change in plan assets:
Fair value of plan assets at year end	$35,705
Pension Benefits [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	46,036	51,022
Cost of benefits earned (service cost)	0	0	0
Interest cost on benefit obligation	1,951	1,775	2,032
Actuarial (gains)/losses	8,957	-4,500
Benefits paid	-4,526	-2,261
Benefit obligation at year end	52,418	46,036	51,022
Change in plan assets:
Fair value of plan assets at beginning of year	36,023	31,392
Actual return on plan assets	1,014	5,574
Employer contributions	1,063	1,318
Benefits paid	-2,395	-2,261
Fair value of plan assets at year end	35,705	36,023	31,392
Unfunded status at December 31	-16,713	-10,013
Other Benefits [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	3,919	4,466
Cost of benefits earned (service cost)	89	118	195
Interest cost on benefit obligation	193	178	237
Actuarial (gains)/losses	1,043	-621
Benefits paid	-125	-222
Benefit obligation at year end	5,119	3,919	4,466
Change in plan assets:
Fair value of plan assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	0	0
Benefits paid	0	0
Fair value of plan assets at year end	0	0	0
Unfunded status at December 31	($5,119)	($3,919)

PENSION_AND_OTHER_POSTRETIREME4

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 2) (Pension Benefits [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Projected benefit obligation	$52,418	$46,036
Accumulated benefit obligation	52,418	46,036
Fair value of plan assets	$35,705	$36,023

PENSION_AND_OTHER_POSTRETIREME5

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 3) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits [Member]
Components of expense:
Defined Benefit Plan, Service Cost	$0	$0	$0
Defined Benefit Plan, Interest Cost	1,951	1,775	2,032
Expected return on plan assets	-2,494	-2,092	-1,873
Amortization of prior-service costs	0	0	0
Amortization of transition obligation	0	0	0
Recognized net actuarial loss	0	504	316
Gain due to curtailment	0	0	0
Net periodic (benefit)/cost	-543	187	475
Other Benefits [Member]
Components of expense:
Defined Benefit Plan, Service Cost	89	118	195
Defined Benefit Plan, Interest Cost	193	178	237
Expected return on plan assets	0	0	0
Amortization of prior-service costs	-316	-333	-233
Amortization of transition obligation	7	7	10
Recognized net actuarial loss	129	171	160
Gain due to curtailment	-42	0	0
Net periodic (benefit)/cost	$60	$141	$369

PENSION_AND_OTHER_POSTRETIREME6

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 4)	Dec. 31, 2014	Dec. 31, 2013
Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	3.75%	4.50%
Rate of future compensation increases	0.00%	0.00%
Other Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	4.00%	5.00%
Rate of future compensation increases	0.00%	0.00%

PENSION_AND_OTHER_POSTRETIREME7

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 5)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	4.50%	3.75%	4.50%
Expected (long-term) return on plan assets	7.00%	6.75%	6.50%
Rate of future compensation increases	0.00%	0.00%	0.00%
Other Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	5.00%	4.00%	4.50%
Expected (long-term) return on plan assets	0.00%	0.00%	0.00%
Rate of future compensation increases	0.00%	0.00%	0.00%

PENSION_AND_OTHER_POSTRETIREME8

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 6) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Effect of 1% increase on total of service and interest cost components in 2014	$34
Effect of 1% increase on postretirement benefit obligation as of December 31, 2014	465
Effect of 1% decrease on total of service and interest cost components in 2014	-29
Effect of 1% decrease on postretirement benefit obligation as of December 31, 2014	($434)

PENSION_AND_OTHER_POSTRETIREME9

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 7) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2015	$2,468
2016	2,597
2017	2,629
2018	2,738
2019	2,842
Years 2020-2024	15,624
Defined Benefit Plan Expected Future Benefit Payments	28,898
Other Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2015	189
2016	194
2017	207
2018	214
2019	209
Years 2020-2024	1,190
Defined Benefit Plan Expected Future Benefit Payments	$2,203

Recovered_Sheet1

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details 8) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$35,705
Sovereign Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	55
Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1,099
US Companies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	17,259
International Companies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	7,333
Corporate Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1,710
Mutual Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	3,352
US Treasury Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	3,923
Federal agency mortgage-backed securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	974
Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	33,995
Fair Value, Inputs, Level 1 [Member] | Sovereign Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	55
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1,099
Fair Value, Inputs, Level 1 [Member] | US Companies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	17,259
Fair Value, Inputs, Level 1 [Member] | International Companies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	7,333
Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0
Fair Value, Inputs, Level 1 [Member] | Mutual Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	3,352	[1]
Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	3,923
Fair Value, Inputs, Level 1 [Member] | Federal agency mortgage-backed securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	974
Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1,710
Fair Value, Inputs, Level 2 [Member] | Sovereign Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0
Fair Value, Inputs, Level 2 [Member] | US Companies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0
Fair Value, Inputs, Level 2 [Member] | International Companies [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1,710
Fair Value, Inputs, Level 2 [Member] | Mutual Funds [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0
Fair Value, Inputs, Level 2 [Member] | Federal agency mortgage-backed securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$0
[1]	The mutual fund investments are invested in intermediate term bonds and fixed income instruments including (but not limited to) mortgage and other asset-backed securities and corporate debt securities of U.S. and non-U.S. issuers.

Recovered_Sheet2

PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Details Textual)

12 Months Ended

12 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2011

Sep. 30, 2013

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2014

Dec. 31, 2013

Equity Securities [Member]

Fixed Income Securities [Member]

Seafarers Pension Plan [Member]

MEBA Pension Plan [Member]

MEBA Pension Plan [Member]

AMO Pension Plan [Member]

AMO Pension Plan [Member]

Minimum [Member]

Maximum [Member]

Other Benefits [Member]

Other Benefits [Member]

Other Benefits [Member]

Other Benefits [Member]

Other Benefits [Member]

Pension Benefits [Member]

Pension Benefits [Member]

Pension Benefits [Member]

Pension Benefits [Member]

Pension Benefits [Member]

Pension Benefits [Member]

Pension Plan, Defined Benefit [Member]

Pension Plan, Defined Benefit [Member]

Contracts

USD ($)

USD ($)

USD ($)

USD ($)

Maritrans Inc [Member]

Maritrans Inc [Member]

Maritrans Inc [Member]

USD ($)

USD ($)

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maritrans Inc [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

GBP (£)

Numbers

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]

Defined Benefit Plan, Contributions by Employer

$0

$0

$1,063

$1,318

$1,545

$1,063

$1,318

$7,601

£ 4,896

Defined Benefit Plan Employer Contribution Percentage

5.00%

Funded Percentage Under Pension Protection Act

65.00%

80.00%

Multiemployer Plans, Withdrawal Obligation

17,503

32,365

Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year

8.00%

Defined Benefit Plan, Ultimate Health Care Cost Trend Rate

5.00%

Defined Benefit Plan, Target Plan Asset Allocations

65.00%

35.00%

Pension and Other Postretirement and Postemployment Benefit Plans, Liabilities, Noncurrent

$1,225

$13,275

Number Of Defined Benefit Pension Plan

3

Multiemployer Plans Surcharge Imposed

5.00%

Acquisition Date

2006-11

Defined Benefit Plan Service Period For Eligibility

1984

1998

1998

Defined Benefit Plan Termination Date

2005-12

Number Of Former Employees Included In Plan

5

OTHER_INCOMEEXPENSE_Details

OTHER INCOME/(EXPENSE) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Investment income:
Interest	$359	$856	$431
Dividends	0	0	36
Gain/(loss) on sale or write-down of securities and investments	0	-197	-3,166
Investment Income Interest and Dividend and Gain Loss On Investments	359	659	-2,699
Gain on derivative transactions	0	0	1,376
MiscellaneousBnet	67	190	9
Other Income	$426	$849	($1,314)

OTHER_INCOMEEXPENSE_Details_Te

OTHER INCOME/(EXPENSE) (Details Textual) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Other Income [Line Items]
Other than Temporary Impairment Losses, Investments	$132	$816
Cost-method Investments, Other than Temporary Impairment		$2,600

SEVERANCE_AND_RELOCATION_COSTS2

SEVERANCE AND RELOCATION COSTS AND AGREEMENTS WITH EXECUTIVE OFFICERS (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Severance Reserve Outsourcing RIF [Member]
Activity for the year ended December 31
Beginning Balance	$0
Provision	18,616
Change in estimate	-1,831
Utilized	-15,626
Release of excess reserves	0
Ending Balance	1,159	0
Severance Reserve April 2013 RIF [Member]
Activity for the year ended December 31
Beginning Balance	1,368
Provision	0	3,824
Change in estimate	0	25
Utilized	-1,176	-2,059
Release of excess reserves	-192	-422
Ending Balance	$0	$1,368

SEVERANCE_AND_RELOCATION_COSTS3

SEVERANCE AND RELOCATION COSTS AND AGREEMENTS WITH EXECUTIVE OFFICERS (Details Textual) (USD $)	12 Months Ended			0 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Aug. 11, 2014	Jun. 15, 2012
Restructuring Cost and Reserve [Line Items]
Severance Costs	$17,020	$3,097	$3,163
Reversal Of Compensation Expense Related to Restructuring		3,209
Vessel Technical Management Relocation Description	In the first quarter of 2012, the Company announced the relocation of the technical management (“TMC”) of its conventional International Flag crude oil tanker fleet from its Newcastle, U.K. office to its Athens, Greece office. In connection therewith, approximately 50 employees were terminated in Newcastle.
Excess Reserves Net Of Additional Provisions	422
Bankruptcy Claims, Amount of Claims Filed	1,500
Restructuring Charges, Total		3,163	3,163
Business Exit Costs	3,427
Number Of Employees	50
Professional Fees	15,258	14,950	2,632
International Crude Tankers Segment [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	3,428
Business Exit Costs	1,672
International Product Carriers Segment [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	7,651
Business Exit Costs	1,260
Employment Letter Agreement [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges, Total				675
Captain Robert E. Johnston [Member]
Restructuring Cost and Reserve [Line Items]
Professional Fees				56
Payments for Restructuring				1,013
Chief Executive Officer [Member]
Restructuring Cost and Reserve [Line Items]
Bankruptcy Claims, Amount of Claims Filed	6,399
Approved Bonus					1,500
Non Executive Employees Incentive Program [Member] | To Achieve Objectives [Member]
Restructuring Cost and Reserve [Line Items]
Deferred Compensation Arrangement with Individual, Cash Award Granted, Amount	3,463
Non Executive Employees Incentive Program [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage	25.00%
Non Executive Employees Incentive Program [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage	75.00%
April RIF [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	192	192
Restructuring Charges, Total		$3,427

2014_AND_2013_QUARTERLY_RESULT2

2014 AND 2013 QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) (Details) (USD $)	3 Months Ended																12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information [Line Items]
Shipping revenues	$216,928		$206,283	[1]	$241,777	[1]	$292,446	[1]	$273,102		$267,342		$228,114		$247,438		$957,434	$1,015,996	$1,137,134
Gain on disposal of vessels, including impairments	6,298		2,753	[1]	4	[1]	1,477	[1]	-382,614	[2]	-63	[2]	1,228	[2]	-22	[2]	10,532	-365,257	-271,359
Income/(loss) from vessel operations	47,476		14,525	[1]	-1,529	[1]	34,630	[1]	-376,619		7,768		432		1,221		95,102	-367,198	-379,233
Interest expense	-28,746	[3]	-29,111	[1],[3]	-174,511	[1],[3]	-123	[1],[3]	-28	[4]	-3	[4]	-31	[4]	-288	[4]	-232,491	-350	-93,421
Reorganization Items, net	-6,338		-49,756	[1]	-86,123	[1]	-29,256	[1]	-90,341	[5]	-14,705	[5]	-37,503	[5]	-184,621	[5]	-171,473	-327,170	-41,113
Income tax benefit/(provision)	2,179		63,544	[1],[6]	50,414	[1],[6]	-1,329	[1],[6]	8,958		-1,947		1,899		5,835		114,808	14,745	1,481
Net income/(loss)	$26,530		$10,614	[1]	($201,967)	[1]	$12,550	[1]	($447,281)		$960		($24,147)		($167,762)		($152,273)	($638,230)	($480,114)
Basic and diluted net income/(loss) per share (in dollars per share)									($14.67)		$0.03		($0.79)		($5.51)
Common Stock [Member]
Quarterly Financial Information [Line Items]
Diluted net income/(loss) per share (in dollars per share)	$0		$0	[1]	($6.61)	[1]	$0.41	[1]
Common Class A And Class B [Member]
Quarterly Financial Information [Line Items]
Diluted net income/(loss) per share (in dollars per share)	$0.05		$0.03	[1]	$0	[1]	$0	[1]
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
[2]	As discussed in Note 6, "Vessels, Deferred Drydock and Other Property," vessel impairment charges aggregating $365,976 were recorded in the fourth quarter. Further, as discussed in Note 3, "Summary of Significant Accounting Policies," and Note 9, "Intangible Assets," impairment charges of $9,589 for goodwill and $6,625 for intangible assets related to the International Crude Tankers Lightering business were recorded in the fourth quarter.
[3]	Interest expense of $73,637 for the Unsecured Revolving Credit Facility and interest expense of $73,660 for the Unsecured Senior Notes relating to post-petition contractual interest (which includes default interest) were recorded in the second quarter.
[4]	As discussed in Note 2, "Chapter 11 Filing and Emergence from Bankruptcy," and Note 10, "Debt," the Debtors filed a petition for relief under Chapter 11 and its debt agreements were classified as liabilities subject to compromise as of December 31, 2013. For the quarter ended December 31, 2013, interest expense of $17,168 was accordingly not recorded.
[5]	Also discussed in Note 2, the Company adjusts its accrued liabilities relating to rejected executory contracts when new information becomes available. In the fourth quarter, the Company increased its accruals by $69,154 based upon such new information.
[6]	As discussed in Note 13, "Taxes," there was an income tax benefit for the year ended December 31, 2014 due to a) a change in the mix of U.S. and foreign income and losses, primarily occurring in the second quarter and b) the Company released its deferred tax liability for undistributed earnings of its foreign subsidiaries attributable to the excess of the $1,500,000 facility limit over the cumulative potential deemed dividends arising from drawdowns by OSG under such facility and recorded an income tax benefit of $55,602 in the third quarter.

2014_AND_2013_QUARTERLY_RESULT3

2014 AND 2013 QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) (Details Textual) (USD $)	3 Months Ended											12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information [Line Items]
Deferred Tax Liabilities, Gross	$314,680	$1,500,000						$403,566				$314,680	$403,566
Income Tax Expense (Benefit)	-2,179	-63,544	[1],[2]	-50,414	[1],[2]	1,329	[1],[2]	-8,958	1,947	-1,899	-5,835	-114,808	-14,745	-1,481
Impairment of Long-Lived Assets Held-for-use												0	366,439	279,382
Goodwill and Intangible Asset Impairment								9,589				0	16,214	0
Interest Expense, Debt								17,168
Liabilities Subject to Compromise, Debt and Accrued Interest								69,154					69,154
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total												-166,309	-593,793	-474,588
Scenario, Previously Reported [Member]
Quarterly Financial Information [Line Items]
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total		2,169		2,144		2,133
Earnings Per Share, Basic and Diluted		$0.01		$0.07		$0.07
Vessels [Member]
Quarterly Financial Information [Line Items]
Impairment of Long-Lived Assets Held-for-use								365,976				211,491
International Crude Tankers Lightering [Member]
Quarterly Financial Information [Line Items]
Goodwill and Intangible Asset Impairment								6,625
Unsecured Revolving Credit Facility [Member]
Quarterly Financial Information [Line Items]
Interest Expense for Postpetition Contractual Interest				73,637								78,625
Unsecured Senior Notes [Member]
Quarterly Financial Information [Line Items]
Interest Expense for Postpetition Contractual Interest				$73,660								$92,220
[1]	The quarterly information included in the table above for the quarters ended March 31, 2014, June 30, 2014 and September 30, 2014 has been revised from that previously reported in the Quarterly Reports on Form 10-Q for the respective periods to reflect the correction of an error identified during the fourth quarter financial close reporting process related to the overstatement of depreciation expense recorded on certain vessels. The error did not impact periods prior to 2014. The Company assessed the materiality of the error on previously issued interim financial statements in accordance with SEC Staff Accounting Bulletins No. 99 and concluded that the revisions were not material to the condensed consolidated financial statements for any of the affected quarterly periods. The quarters ended March 31, 2014 and September 30, 2014 presented in the table above reflect an increase of $2,133 and $2,169, respectively, in the previously reported amounts of income from vessel operations and net income, and an increase of $0.07 and $0.01, respectively, in previously reported basic and diluted earnings per share. The quarter ended June 30, 2014 presented in the table above reflects a reduction of $2,144 in the previously reported loss from vessel operations and net loss, and a reduction of $0.07 in previously reported basic and diluted loss per share.
[2]	As discussed in Note 13, "Taxes," there was an income tax benefit for the year ended December 31, 2014 due to a) a change in the mix of U.S. and foreign income and losses, primarily occurring in the second quarter and b) the Company released its deferred tax liability for undistributed earnings of its foreign subsidiaries attributable to the excess of the $1,500,000 facility limit over the cumulative potential deemed dividends arising from drawdowns by OSG under such facility and recorded an income tax benefit of $55,602 in the third quarter.

CONTINGENCIES_Details_Textual

CONTINGENCIES (Details Textual) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Loss Contingencies [Line Items]
Litigation Settlement, Amount	$7,000
Estimated Litigation Liability	5,000
Bankruptcy Claims, Amount of Claims Filed	1,500
Limited Recoveries From Segregated Reserve	2,000
Equity Plan [Member]
Loss Contingencies [Line Items]
Limited To Exposure	2,000
Initial Distribution Date [Member]
Loss Contingencies [Line Items]
Litigation Recovery Percentage	15.00%
Final Order [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount	5,000
Plan's effective date [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount	$3,000