Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income (loss)	$ (53,213)	$ 13,910	$ (160,419)	$ (71,801)
Other comprehensive income:
Net unrealized gains on marketable securities	21		20
Other comprehensive income	21		20
Comprehensive income (loss)	$ (53,192)	$ 13,910	$ (160,399)	$ (71,801)