Derivatives - Amount of Gain (Loss) Recognized in OCI and Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) recognized in OCI	$ 2,921	$ (7,182)
Interest expense	(1,537)	(3,144)
Net sales	248,913	243,525
Cost of sales	(137,019)	(139,741)
Derivatives designated as cash flow hedges
Derivative Instruments, Gain (Loss) [Line Items]
Cost of sales	(137,019)	(139,741)
Derivatives designated as cash flow hedges | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) reclassified from AOCI	350	(104)
Derivatives designated as cash flow hedges | Interest rate swap
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) recognized in OCI	721	(5,463)
Interest expense	(1,537)	(3,144)
Derivatives designated as cash flow hedges | Interest rate swap | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) reclassified from AOCI	(432)	251
Derivatives designated as cash flow hedges | Foreign currency forward contracts
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) recognized in OCI	516	(1,494)
Net sales	248,913	243,525
Derivatives designated as cash flow hedges | Foreign currency forward contracts | Revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) reclassified from AOCI	$ (1,602)	$ 78