Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - 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	$ (12,300)	$ (12,798)	$ (42,164)	$ (33,712)
Other comprehensive income:
Foreign currency translation	(7)	0	(8)	(1)
Total comprehensive loss	$ (12,307)	$ (12,798)	$ (42,172)	$ (33,713)