Segment Reporting (Details Textuals) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 U.S. Operations [Member]	Sep. 30, 2010 U.S. Operations [Member]	Sep. 30, 2011 U.S. Operations [Member]	Sep. 30, 2011 Swiss Operations [Member]	Sep. 30, 2011 Western European Operations [Member]	Sep. 30, 2010 Western European Operations [Member]	Sep. 30, 2011 Western European Operations [Member]	Sep. 30, 2010 Western European Operations [Member]	Sep. 30, 2011 Chinese Operations [Member]	Sep. 30, 2010 Chinese Operations [Member]	Sep. 30, 2011 Chinese Operations [Member]	Sep. 30, 2011 Other Operations [Member]	Mar. 31, 2011 Swiss Operations segment Member
Segment Reporting (Textuals) [Abstract]
Goodwill Acquired									$ 10,900,000			$ 7,400,000
Business Acquisition Allocation Of Goodwill Acquired Amongst Segments																	2,500,000
Restructuring charges	$ 362,000	$ 566,000	$ 2,831,000	$ 2,476,000	$ 200,000	$ 100,000	$ 700,000	$ 200,000	$ 100,000	$ 400,000	$ 1,400,000		$ 100,000	$ 100,000	$ 200,000	$ 300,000