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Goodwill and Other Intangible Assets (Details 1) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 48,186 $ 45,638
Finite-Lived Intangible Assets, Accumulated Amortization (25,648) (24,485)
Goodwill 41,081 39,822
Other indefinite lived intangible assets 1,228 1,252
Total goodwill and other indefinite lived intangible assets 42,309 41,074
Total intangible assets 90,495 86,712
Developed Technology Rights [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 16,399 15,538
Finite-Lived Intangible Assets, Accumulated Amortization $ (11,508) (11,198)
Finite-Lived Intangible Assets, Weighted Average Useful Life 7 years 7 months 6 days  
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 7,698 7,114
Finite-Lived Intangible Assets, Accumulated Amortization $ (2,826) (2,557)
Finite-Lived Intangible Assets, Weighted Average Useful Life 9 years 6 months  
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 23,830 22,730
Finite-Lived Intangible Assets, Accumulated Amortization $ (11,238) (10,681)
Finite-Lived Intangible Assets, Weighted Average Useful Life 10 years 4 months 24 days  
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 259 256
Finite-Lived Intangible Assets, Accumulated Amortization $ (76) $ (49)
Finite-Lived Intangible Assets, Weighted Average Useful Life 3 years 8 months 12 days