Geographic and Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Revenue:	$ 680	$ 528	$ 1,867	$ 1,664
Net income (loss)	19,470	(59,447)	(21,945)	(12,376)
Identifiable assets:	7,729		7,729		7,600
United States [Member]
Revenue:	598	501	1,759	1,274
Net income (loss)	19,714	59,936	(20,946)	(13,515)
Identifiable assets:	7,278		7,278		6,998
Germany [Member]
Revenue:	82	27	108	390
Net income (loss)	(244)	(489)	(999)	(1,139)
Identifiable assets:	$ 451		$ 451		$ 602