Reportable Segments and Geographic Data (Schedule of Financial Data by Geographic Area) (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 213,000	$ 191,300	$ 203,200	$ 172,300	$ 177,500	$ 178,800	$ 172,300	$ 181,300	$ 191,600	$ 179,900	$ 193,500	$ 180,300	$ 779,839	$ 709,868	$ 745,345
Property, plant and equipment, net	422,564				357,470				395,113				422,564	357,470	395,113
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales													396,238	323,399	324,750
Property, plant and equipment, net	245,626				172,372				168,848				245,626	172,372	168,848
Switzerland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales													145,479	159,804	184,022
Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales													60,287	58,846	59,332
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales													48,043	48,490	52,822
Property, plant and equipment, net	65,987				80,786				93,182				65,987	80,786	93,182
France [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales													42,862	26,081	26,654
Property, plant and equipment, net	42,272				28,539				25,091				42,272	28,539	25,091
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales													27,526	30,581	27,431
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales													59,404	62,667	70,334
Property, plant and equipment, net	27,048				24,788				44,061				27,048	24,788	44,061
Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	15,585				19,095				23,473				15,585	19,095	23,473
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	14,591				19,029				22,222				14,591	19,029	22,222
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, plant and equipment, net	$ 11,455				$ 12,861				$ 18,236				$ 11,455	$ 12,861	$ 18,236