Condensed Combined Financial Statements of Debtor Subsidiaries (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Shipping Revenues:
Pool revenues	$ 56,255	$ 72,526
Time and bareboat charter revenues	83,801	67,985
Voyage charter revenues	107,382	151,867
Shipping revenues	247,438	292,378
Operating Expenses:
Voyage expenses	51,793	78,349
Vessel expenses	66,367	70,703
Charter hire expenses	65,460	95,771
Depreciation and amortization	43,271	49,262
General and administrative	19,726	21,136
Gain on disposal of vessels	22	(106)
Total Operating Expenses	246,217	316,020
Income from Vessel Operations	1,221	(23,642)
Equity in Income of Affiliated Companies	10,290	6,908	[1]
Operating Income	11,511	(16,734)
Other Expense	(199)	3,412
Income before Interest Expense, Reorganization Items and Income Taxes	11,312	(13,322)
Interest Expense	(288)	(23,010)
Income before Reorganization Items and Income Taxes	11,024	(36,332)
Reorganization Items, net	(184,621)	0
Loss before Income Taxes	(173,597)	(36,332)
Income Tax Benefit	5,835	(528)
Net Loss	(167,762)	(36,860)	[2]
Combined Debtor Entities [Member]
Shipping Revenues:
Pool revenues	56,267
Time and bareboat charter revenues	83,801
Voyage charter revenues	107,549
Shipping revenues	247,617
Operating Expenses:
Voyage expenses	51,986
Vessel expenses	66,514
Charter hire expenses	65,458
Depreciation and amortization	43,456
General and administrative	14,353
Gain on disposal of vessels	28
Total Operating Expenses	241,795
Income from Vessel Operations	5,822
Equity in Income of Affiliated Companies	10,290
Operating Income	16,112
Other Expense	(2,789)
Income before Interest Expense, Reorganization Items and Income Taxes	13,323
Interest Expense	(288)
Income before Reorganization Items and Income Taxes	13,035
Reorganization Items, net	184,621
Loss before Income Taxes	(171,586)
Income Tax Benefit	5,835
Net Loss	$ (165,751)

[1] Equity in income of affiliated companies has been restated for the three months ended March 31, 2012 as more fully described in Note 2.

[2] Net loss has been restated for the three months ended March 31, 2012 as more fully described in Note 2.