Accumulated Other Comprehensive Income (Loss) - Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated other comprehensive income (loss)
Beginning balance	$ 928,847	$ 950,675	$ 949,944	$ 932,775
Reclassifications to:
Cost of sales	(141,961)	(138,913)	(415,857)	(416,194)
Interest expense	(2,197)	(3,415)	(8,056)	(9,295)
Ending balance	933,837	949,241	933,837	949,241
Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive income (loss)
Beginning balance	(12,313)	(5,147)	(5,294)	(2,033)
Other comprehensive income (loss)	2,191	(2,460)	(6,908)	(5,420)
Income taxes	35	39	1,900	997
Reclassifications to:
Net other comprehensive income (loss)	2,988	(2,947)	(4,031)	(6,061)
Ending balance	(9,325)	(8,094)	(9,325)	(8,094)
Accumulated Other Comprehensive Income (Loss) | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassifications to:
Revenue	(157)	(118)	(666)	(220)
Cost of sales	494	112	1,204	298
Interest expense	425	(520)	439	(1,716)
Cash Flow Hedges
Accumulated other comprehensive income (loss)
Beginning balance	(5,190)	751	218	3,522
Other comprehensive income (loss)	(1,354)	319	(8,852)	(2,300)
Income taxes	152	53	2,027	1,014
Reclassifications to:
Net other comprehensive income (loss)	(440)	(154)	(5,848)	(2,924)
Ending balance	(5,630)	598	(5,630)	598
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassifications to:
Revenue	(157)	(118)	(666)	(220)
Cost of sales	494	112	1,204	298
Interest expense	425	(520)	439	(1,716)
Foreign Currency Translation
Accumulated other comprehensive income (loss)
Beginning balance	(7,123)	(5,898)	(5,512)	(5,555)
Other comprehensive income (loss)	3,545	(2,779)	1,944	(3,120)
Income taxes	(117)	(14)	(127)	(17)
Reclassifications to:
Net other comprehensive income (loss)	3,428	(2,793)	1,817	(3,137)
Ending balance	$ (3,695)	$ (8,692)	$ (3,695)	$ (8,692)