CONSOLIDATED AND CONDENSED 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
Statement of Comprehensive Income [Abstract]
Net loss	$ (15,478)	$ (24,143)	$ (61,948)	$ (75,544)
Other comprehensive loss:
Foreign currency translation adjustments	371	0	323	0
Net unrealized loss on available-for-sale investments	(67)	(67)	(69)	(59)
Comprehensive loss	$ (15,174)	$ (24,210)	$ (61,694)	$ (75,603)