Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net income (loss)	$ (95,751)	$ (74,904)	$ 99,456
Other comprehensive income (loss):
Change in unrealized gain or loss, net of $0, $0, and $0 tax expense in 2018, 2017 and 2016, respectively	(179)	(9)	(172)
Realized gain reclassified into earnings, net of tax	(1)	(1)	(5)
Comprehensive income (loss)	$ (95,931)	$ (74,914)	$ 99,279