Comprehensive Loss

6 Months Ended

Jun. 30, 2011

Comprehensive Loss

Comprehensive Loss

3.  Comprehensive Loss

Comprehensive loss is comprised of net loss and changes in other comprehensive loss, which consists of unrealized gains and losses on the Company’s marketable securities. Comprehensive loss was as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
(in thousands)	2011			2010			2011			2010
Net loss	$	(25,045	)	$	(20,806	)	$	(47,712	)	$	(43,341	)
Other comprehensive loss:
Net unrealized loss on available-for-sale securities	(36		)	(8		)	(41		)	(61		)
Comprehensive loss	$	(25,081	)	$	(20,814	)	$	(47,753	)	$	(42,402	)