Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net loss	$ (22,745)	$ (22,991)
Other comprehensive income (loss):
Change in unrealized gain or loss, net of tax	540	(273)
Realized gain reclassified into earnings, net of tax		(2)
Comprehensive loss	$ (22,205)	$ (23,266)