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Reportable Segments and Geographic Data (Schedule of Financial Data by Geographic Area) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
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, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]                              
Net sales $ 177,500 $ 178,800 $ 172,300 $ 181,300 $ 191,600 $ 179,900 $ 193,500 $ 180,300 $ 189,600 $ 183,100 $ 198,000 $ 186,700 $ 709,868 $ 745,345 $ 757,414
Property, plant and equipment, net 357,470       395,113       418,830       357,470 395,113 418,830
United States [Member]                              
Revenues from External Customers and Long-Lived Assets [Line Items]                              
Net sales                         323,399 324,750 338,729
Property, plant and equipment, net 172,372       168,848       162,380       172,372 168,848 162,380
Switzerland [Member]                              
Revenues from External Customers and Long-Lived Assets [Line Items]                              
Net sales                         159,804 184,022 190,035
Brazil [Member]                              
Revenues from External Customers and Long-Lived Assets [Line Items]                              
Net sales                         58,846 59,332 62,076
China [Member]                              
Revenues from External Customers and Long-Lived Assets [Line Items]                              
Net sales                         48,490 52,822 43,265
Property, plant and equipment, net 80,786       93,182       103,109       80,786 93,182 103,109
Mexico [Member]                              
Revenues from External Customers and Long-Lived Assets [Line Items]                              
Net sales                         30,581 27,431 24,938
France [Member]                              
Revenues from External Customers and Long-Lived Assets [Line Items]                              
Net sales                         26,081 26,654 21,557
Property, plant and equipment, net 28,539       25,091       15,893       28,539 25,091 15,893
Korea [Member]                              
Revenues from External Customers and Long-Lived Assets [Line Items]                              
Property, plant and equipment, net 19,095       23,473       35,542       19,095 23,473 35,542
United Kingdom [Member]                              
Revenues from External Customers and Long-Lived Assets [Line Items]                              
Property, plant and equipment, net 19,029       22,222       25,246       19,029 22,222 25,246
Canada [Member]                              
Revenues from External Customers and Long-Lived Assets [Line Items]                              
Property, plant and equipment, net 12,861       18,236       22,434       12,861 18,236 22,434
Other Countries [Member]                              
Revenues from External Customers and Long-Lived Assets [Line Items]                              
Net sales                         62,667 70,334 76,814
Property, plant and equipment, net $ 24,788       $ 44,061       $ 54,226       $ 24,788 $ 44,061 $ 54,226