Accumulated Other Comprehensive Income (Loss) - Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accumulated other comprehensive income (loss)
Beginning balance	$ 939,798	$ 940,111	$ 949,944	$ 932,775
Reclassifications to:
Cost of sales	(134,155)	(143,568)	(273,896)	(277,281)
Interest expense	(2,715)	(3,115)	(5,859)	(5,879)
Ending balance	928,847	950,675	928,847	950,675
Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive income (loss)
Beginning balance	(14,759)	(4,548)	(5,294)	(2,033)
Other comprehensive income (loss)	1,983	(474)	(9,099)	(2,959)
Income taxes	23	281	1,865	958
Reclassifications to:
Net other comprehensive income (loss)	2,446	(599)	(7,019)	(3,114)
Ending balance	(12,313)	(5,147)	(12,313)	(5,147)
Accumulated Other Comprehensive Income (Loss) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassifications to:
Revenue	(431)	92	(509)	(102)
Cost of sales	606	104	710	185
Interest expense	265	(602)	14	(1,196)
Cash Flow Hedges
Accumulated other comprehensive income (loss)
Beginning balance	(5,115)	1,608	218	3,522
Other comprehensive income (loss)	(541)	(748)	(7,498)	(2,618)
Income taxes	26	297	1,875	960
Reclassifications to:
Net other comprehensive income (loss)	(75)	(857)	(5,408)	(2,771)
Ending balance	(5,190)	751	(5,190)	751
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassifications to:
Revenue	(431)	92	(509)	(102)
Cost of sales	606	104	710	185
Interest expense	265	(602)	14	(1,196)
Foreign Currency Translation
Accumulated other comprehensive income (loss)
Beginning balance	(9,644)	(6,156)	(5,512)	(5,555)
Other comprehensive income (loss)	2,524	274	(1,601)	(341)
Income taxes	(3)	(16)	(10)	(2)
Reclassifications to:
Net other comprehensive income (loss)	2,521	258	(1,611)	(343)
Ending balance	$ (7,123)	$ (5,898)	$ (7,123)	$ (5,898)