CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands, except Share data		Total		Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]		Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Dec. 31, 2009		$ 1,867,855		$ 40,791	$ 262,117	$ 2,465,949	[1]	$ (840,238)	$ (60,764)
Balance (in shares) at Dec. 31, 2009								13,933,435
Restatement Adjustments	[1]	(538,691)				(538,691)
Balance, as restated		1,329,164		40,791	262,117	1,927,258	[1]	(840,238)	(60,764)
Balance, as restated (in shares)								13,933,435
Net Loss		(122,542)	[2]			(122,542)	[1]
Other Comprehensive Income (Loss), net of taxes		(16,124)							(16,124)
Cash Dividends Declared		(51,884)				(51,884)	[1]
Issuance of Common Stock		158,266		3,500	154,766
Issuance of Restricted Stock Awards		0			(862)			862
Issuance of Restricted Stock Awards (in shares)								(57,654)
Compensation Related to Options Granted		4,240			4,240
Amortization of Restricted Stock Awards		7,700			7,700
Options Exercised and Employee Stock Purchase Plan		1,054			643			411
Options Exercised and Employee Stock Purchase Plan (in shares)								(32,419)
Purchases of Treasury Stock		(1,718)						(1,718)
Purchases of Treasury Stock (in shares)								37,391
Reduction in Tax Basis of Assets Held by OSG America L.P.		(25,003)			(25,003)
Balance at Dec. 31, 2010		1,283,153		44,291	403,601	1,752,832	[1]	(840,683)	(76,888)
Balance (in shares) at Dec. 31, 2010								13,880,753
Net Loss		(201,363)	[2]			(201,363)	[1]
Other Comprehensive Income (Loss), net of taxes		(42,419)							(42,419)
Cash Dividends Declared		(46,875)				(46,875)	[1]
Issuance of Restricted Stock Awards		9			(990)			999
Issuance of Restricted Stock Awards (in shares)								(62,501)
Compensation Related to Options Granted		2,821			2,821
Amortization of Restricted Stock Awards		7,248			7,248
Options Exercised and Employee Stock Purchase Plan		638			336			302
Options Exercised and Employee Stock Purchase Plan (in shares)								(24,139)
Purchases of Treasury Stock		(920)						(920)
Purchases of Treasury Stock (in shares)								32,769
Balance at Dec. 31, 2011		1,002,292		44,291	413,016	1,504,594	[1]	(840,302)	(119,307)
Balance (in shares) at Dec. 31, 2011		13,826,882						13,826,882
Net Loss		(480,114)				(480,114)	[1]
Other Comprehensive Income (Loss), 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		1,795			1,795
Amortization of Restricted Stock Awards		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	[1]	$ (835,155)	$ (113,781)
Balance (in shares) at Dec. 31, 2012		13,396,320						13,396,320

[1] See Note 2, “Company Inquiry and Restatement,” to the accompanying financial statements for details

[2] Net loss has been restated for 2011 and 2010 as more fully described in Note 2 “Company Inquiry and Restatement.”