Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income		$ 9,564	$ 5,434	$ 13,254	$ 3,576
Other comprehensive loss, net of tax:
Foreign currency translation adjustment		(675)	(2,785)	378	(2,761)
Unrealized (loss) gain on cash flow hedges, net of tax expense of $0 for all periods		(1,132)	298	(1,158)	1,036
Reclassification of pension liability adjustments to earnings, net of tax expense of $0 for all periods	[1]	92	141	185	255
Other comprehensive loss		(1,715)	(2,346)	(595)	(1,470)
Comprehensive income		$ 7,849	$ 3,088	$ 12,659	$ 2,106

[1] Reclassifications out of accumulated other comprehensive loss for pension obligations are charged to selling and administrative expenses.