Segment Reporting Details 3 (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues from External Customers and Long-Lived Assets
Total Net Sales	$ 657,292	$ 648,360	$ 578,553	$ 570,283	$ 535,400	$ 601,114	$ 561,088	$ 498,766	$ 2,341,528	$ 2,309,328	$ 1,968,178
Total Segments Property, Plant and Equipment, Net	469,421	410,007							469,421	410,007
UNITED STATES
Revenues from External Customers and Long-Lived Assets
Total Net Sales									643,902	612,643	574,625
Total Segments Property, Plant and Equipment, Net	66,720	57,424							66,720	57,424
OTHER AMERICAS
Revenues from External Customers and Long-Lived Assets
Total Net Sales									161,853	159,756	130,851
Total Segments Property, Plant and Equipment, Net	4,332	3,758							4,332	3,758
TOTAL AMERICAS
Revenues from External Customers and Long-Lived Assets
Total Net Sales									805,755	772,399	705,476
Total Segments Property, Plant and Equipment, Net	71,052	61,182							71,052	61,182
GERMANY
Revenues from External Customers and Long-Lived Assets
Total Net Sales									183,859	200,062	170,468
Total Segments Property, Plant and Equipment, Net	25,761	26,266							25,761	26,266
FRANCE
Revenues from External Customers and Long-Lived Assets
Total Net Sales									123,007	136,589	124,330
Total Segments Property, Plant and Equipment, Net	6,781	4,743							6,781	4,743
UNITED KINGDOM
Revenues from External Customers and Long-Lived Assets
Total Net Sales									62,389	66,321	59,347
Total Segments Property, Plant and Equipment, Net	6,103	6,155							6,103	6,155
SWITZERLAND
Revenues from External Customers and Long-Lived Assets
Total Net Sales									65,430	79,376	57,047
Total Segments Property, Plant and Equipment, Net	275,901	245,376							275,901	245,376
OTHER EUROPE
Revenues from External Customers and Long-Lived Assets
Total Net Sales									355,266	379,784	317,044
Total Segments Property, Plant and Equipment, Net	7,410	7,015							7,410	7,015
TOTAL EUROPE
Revenues from External Customers and Long-Lived Assets
Total Net Sales									789,951	862,132	728,236
Total Segments Property, Plant and Equipment, Net	321,956	289,555							321,956	289,555
CHINA
Revenues from External Customers and Long-Lived Assets
Total Net Sales									422,894	379,791	291,115
Total Segments Property, Plant and Equipment, Net	69,784	54,125							69,784	54,125
REST OF WORLD
Revenues from External Customers and Long-Lived Assets
Total Net Sales									322,928	295,006	243,351
Total Segments Property, Plant and Equipment, Net	6,629	5,145							6,629	5,145
TOTAL ASIA REST OF WORLD
Revenues from External Customers and Long-Lived Assets
Total Net Sales									745,822	674,797	534,466
Total Segments Property, Plant and Equipment, Net	$ 76,413	$ 59,270							$ 76,413	$ 59,270