Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 25,823	$ 47,974	$ (30,586)
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustment		1,500	2,033	(4,405)
Unrealized (loss) gain on cash flow hedges, net of tax benefit of $277, $296, and $0, respectively		(809)	(859)	453
Cash flow hedges reclassified to earnings, net of tax expense of $197, $0, and $0, respectively		273	0	0
Pension and post-retirement benefit plans (expense) benefit, net of tax (benefit) expense of $(325), $523, and $(36), respectively		(1,070)	1,406	(543)
Reclassification of pension liability adjustments to earnings, net of tax expense of $9, $26, and $4, respectively*	[1]	21	61	71
Other comprehensive (loss) income		(85)	2,641	(4,424)
Comprehensive income (loss)		$ 25,738	$ 50,615	$ (35,010)

[1] Reclassifications out of Accumulated other comprehensive loss for pension obligations are reflected in selling and administrative expense.