Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (231,808)	$ (19,105)	$ (84,850)
Other comprehensive income (loss):
Currency translation adjustments, net of tax	3,462	(13,088)	11,766
Other	189	184	41
Total other comprehensive income (loss)	3,651	(12,904)	11,807
Comprehensive loss	$ (228,157)	$ (32,009)	$ (73,043)