Reportable Segments and Geographic Data (Schedule of Net Sales and Property, Plant, And Equipment by Geographic Area) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 900,610	$ 1,054,132	$ 982,479
Property, plant and equipment, net	448,554	466,462	462,055
CirComp GmbH
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, additions		10,600
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	503,473	574,063	519,349
Property, plant and equipment, net	263,201	275,965	272,584
Switzerland
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	128,328	146,571	157,339
Brazil
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	60,259	64,666	62,093
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	57,007	48,586	50,923
Property, plant and equipment, net	40,898	41,799	48,686
France
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	55,914	91,783	85,386
Property, plant and equipment, net	41,107	43,986	50,245
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	39,859	73,039	48,534
Property, plant and equipment, net	41,738	45,640	40,343
Other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	55,770	55,424	58,855
Property, plant and equipment, net	17,412	18,001	17,338
Sweden
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	12,109	8,652	8,394
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	10,808	10,577	27
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	10,731	11,047	12,042
South Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 10,550	$ 10,795	$ 12,396