Segment Reporting - Reconcilliation of Segment Data to the Consolidated Financial Statements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting [Abstract]
Operating (loss) income	$ (3,763)	$ 9,560	$ (4,736)	$ 27,716
Interest expense, net	(10,090)	(9,964)	(20,278)	(20,157)
Interest expense - unrealized loss on debt conversion option	0	(4,257)	0	(15,597)
Other income (expense)	745	(691)	(1,554)	(249)
Loss before income taxes and equity in earnings of joint venture	(13,108)	(5,352)	(26,568)	(8,287)
Equity in earnings of joint venture	1,494	1,733	2,963	4,741
Consolidated (loss) income before income taxes	$ (11,614)	$ (3,619)	$ (23,605)	$ (3,546)