Reportable Segments and Geographic Data (Schedule of Financial Data by Geographic Area) (Details) - USD ($) $ in Thousands		3 Months Ended												12 Months Ended
		Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales		$ 257,700	$ 271,100	$ 273,900	$ 251,400	$ 251,600	$ 251,900	$ 255,400	$ 223,600	$ 226,700	$ 222,100	$ 215,600	$ 199,300	$ 1,054,132	$ 982,479	$ 863,717
Property, plant and equipment, net		466,462				462,055				454,302				466,462	462,055	454,302
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales														574,063	519,349	459,525
Property, plant and equipment, net		275,965				272,584				252,639				275,965	272,584	252,639
Switzerland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales														146,571	157,339	147,601
France [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales														91,783	85,386	57,195
Property, plant and equipment, net		43,986				50,245				58,196				43,986	50,245	58,196
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales														73,039	48,534	31,902
Property, plant and equipment, net		45,640				40,343				22,981				45,640	40,343	22,981
Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales														64,666	62,093	60,535
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales														48,586	50,923	48,920
Property, plant and equipment, net		41,799				48,686				61,840				41,799	48,686	61,840
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales														55,424	58,855	58,039
Property, plant and equipment, net		17,144				17,578				19,563				17,144	17,578	19,563
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net		11,047				12,042				14,256				11,047	12,042	14,256
Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net		10,795				12,396				14,558				10,795	12,396	14,558
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	[1]	10,577				27				39				10,577	27	39
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net		$ 9,509				$ 8,154				$ 10,230				$ 9,509	$ 8,154	$ 10,230

[1] In 2019, the Company acquired CirComp GmbH, which resulted in an increase in Property, plant and equipment of $10.6 million.