CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
Net loss	$ (4,584)	$ (21,271)	$ (23,061)	$ (152,538)
Other comprehensive income:
Unrealized gain (loss) on marketable securities, net	21	(3,903)	1,302	(359)
Less: Realized gain on marketable securities, net	0	0	(1,204)	0
Comprehensive loss	$ (4,563)	$ (25,174)	$ (22,963)	$ (152,897)