Operating Segments (Details1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2010
Segment operating profits
Operating Income/Segment operating profit (loss) (1)	$ (5,573)	$ 8,361	$ (7,111)	$ 22,064
General and administrative expenses	(3,878)	(5,148)	(8,457)	(10,036)
Litigation reserve		(100)		(9,600)
Gain on forgiveness of debt	255	1,647	255	1,647	2,900
Gain from derivative financial instruments	(159)	5,568	11,866	4,747
Interest expense, net	(2,524)	(2,633)	(5,265)	(5,322)
Loss from equity investment	(6,636)		(2,467)
Other income (expense), net	7	(164)	18	170
Income (loss) before income taxes	$ (18,508)	$ 7,531	$ (11,161)	$ 3,670