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Goodwill and Other Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 73,214 $ 73,351
Finite-Lived Intangible Assets, Accumulated Amortization (30,223) (28,819)
Goodwill 57,375 57,304
Other indefinite lived intangible assets 1,228 1,232
Total goodwill and other indefinite lived intangible assets 58,603 58,536
Total intangible assets 131,817 131,887
Existing technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross 41,285 41,268
Finite-Lived Intangible Assets, Accumulated Amortization $ (17,173) (16,215)
Finite-Lived Intangible Assets, Weighted Average Useful Life 6 years 10 months 24 days  
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 7,786 7,828
Finite-Lived Intangible Assets, Accumulated Amortization $ (3,007) (2,861)
Finite-Lived Intangible Assets, Weighted Average Useful Life 7 years 6 months  
Distribution agreements/customer relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 22,538 22,657
Finite-Lived Intangible Assets, Accumulated Amortization $ (9,780) (9,509)
Finite-Lived Intangible Assets, Weighted Average Useful Life 10 years 4 months 24 days  
In-process research and development [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 1,387 1,387
Finite-Lived Intangible Assets, Accumulated Amortization $ (45) (30)
Finite-Lived Intangible Assets, Weighted Average Useful Life 7 years 2 months 12 days  
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 218 211
Finite-Lived Intangible Assets, Accumulated Amortization $ (218) $ (204)