Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net loss	$ (69,019)	$ (7,956)
Other comprehensive income (loss):
Pension and other post-retirement benefit adjustments, net of tax	932	1,041
Change in fair value of derivative instruments, net of tax	(8,566)	(2,942)
Foreign currency translation adjustments, net of tax	(1,907)	(7,057)
Other comprehensive income (loss), net of tax	(9,541)	(8,958)
Comprehensive income (loss)	$ (78,560)	$ (16,914)