Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement Of Income And Comprehensive Loss [Abstract]
Net loss	$ (11,909)	$ (6,749)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	1	6
Comprehensive loss	$ (11,908)	$ (6,743)