Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net loss	$ (38,081)	$ (43,806)	$ (167,269)	$ (80,645)
Other comprehensive income:
Change in pension plan and supplemental pension plan liability, net of tax of $0.2 million and $0.4 million, respectively	525	0	1,342	0
Total comprehensive loss	$ (37,556)	$ (43,806)	$ (165,927)	$ (80,645)