Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 7,760	$ 21,512	$ (618)	$ (3,385)	$ 29,272	$ (4,003)
Foreign currency translation adjustment	488		113		1,545	327
(Loss) gain on long-term intra-entity foreign currency transactions	31		121		(4,879)	136
Cash flow hedging activity	137		(877)		(25)	(1,299)
Reclassification of hedging activities into earnings	(392)		144		(282)	146
Reclassification of pension adjustments into earnings	97		102		292	186
Total other comprehensive loss, net of tax	361		(397)		(3,349)	(504)
Comprehensive income (loss)	$ 8,121		$ (1,015)		$ 25,923	$ (4,507)