CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME
Net loss	$ (9,662)	$ (160,423)
Other comprehensive income (loss):
Pension adjustment	153	732
Foreign currency translation	136	(712)
Comprehensive loss	$ (9,373)	$ (160,403)