Comprehensive Income

9 Months Ended

Sep. 30, 2011

Comprehensive Income [Abstract]

Comprehensive Income

13. Comprehensive Income

Comprehensive income includes unrealized gains and losses on short-term investments of U.S. government agency and government sponsored enterprise debt and equity securities. The following table sets forth the calculation of comprehensive income (in thousands):

	Three Months Ended September 30,					Nine Months Ended September 30,
	2011			2010		2011			2010
	(unaudited)					(unaudited)
Net income (loss)	$	(134,481	)	$	3,094	$	(150,081	)	$	6,571
Change in unrealized gain (loss) on investments, net		(29	)		2		(30	)		(10	)
Total comprehensive income (loss)	$	(134,510	)	$	3,096	$	(150,111	)	$	6,561