Condensed Consolidated Statements Of Cash Flow (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
OPERATIONS
Net income (loss)	$ (11,142)	$ 24,202
Depreciation and amortization	15,572	15,216
Deferred income taxes	(1,881)	1,072
Amortization of discount on Convertible Notes	2,320	2,055
Equity in losses of investees	1,703	2,478
Amortization of gain on sale of the shipping fleet	(5,711)	(3,533)
Stock-based compensation	2,171	3,624
Changes in current assets and liabilities and other	9,874	(70,823)
Operating cash flow	12,906	(25,709)
INVESTING
Capital expenditures	(11,798)	(12,354)
Other, net	(860)	229
Investing cash flow	(12,658)	(12,125)
FINANCING
Repayments of long-term debt	(4,721)	(5,052)
Borrowings under the revolving credit facility	30,000	0
Repayments of revolving credit facility	(30,000)	0
Financing cash flow	(4,721)	(5,052)
Decrease in cash and equivalents	(4,473)	(42,886)
Balance at beginning of period	45,261	156,481
Balance at end of period	$ 40,788	$ 113,595