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Goodwill and Intangible Assets, Net - Finite-Lived Intangibles (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Finite-Lived Intangible Assets, Net [Abstract]          
Gross [1] $ 54,845   $ 54,845   $ 54,607
Accumulated Amortization [1] (24,045)   (24,045)   (21,681)
Net 30,800   30,800   32,926
Finite-lived intangible assets, fully amortized, gross 9,700   9,700   9,000
Amortization expense 1,555 $ 1,049 3,109 $ 2,088  
Cost of Sales [Member]          
Finite-Lived Intangible Assets, Net [Abstract]          
Amortization expense 21 34 42 69  
Selling, General and Administrative Expenses [Member]          
Finite-Lived Intangible Assets, Net [Abstract]          
Amortization expense 1,534 $ 1,015 3,067 $ 2,019  
Distribution Rights [Member]          
Finite-Lived Intangible Assets, Net [Abstract]          
Gross [1] 318   318   312
Accumulated Amortization [1] (111)   (111)   (96)
Net 207   207   216
Patents [Member]          
Finite-Lived Intangible Assets, Net [Abstract]          
Gross [1] 11,562   11,562   11,425
Accumulated Amortization [1] (4,595)   (4,595)   (4,737)
Net 6,967   6,967   6,688
Trademarks and Trade Names [Member]          
Finite-Lived Intangible Assets, Net [Abstract]          
Gross [1] 2,399   2,399   2,401
Accumulated Amortization [1] (1,181)   (1,181)   (1,053)
Net 1,218   1,218   1,348
Developed and Core Technology [Member]          
Finite-Lived Intangible Assets, Net [Abstract]          
Gross [1] 12,584   12,584   12,587
Accumulated Amortization [1] (3,080)   (3,080)   (2,144)
Net 9,504   9,504   10,443
Software and Software Development Costs [Member]          
Finite-Lived Intangible Assets, Net [Abstract]          
Gross [1] 291   291   167
Accumulated Amortization [1] (139)   (139)   (97)
Net 152   152   70
Customer Relationships [Member]          
Finite-Lived Intangible Assets, Net [Abstract]          
Gross [1] 27,691   27,691   27,715
Accumulated Amortization [1] (14,939)   (14,939)   (13,554)
Net $ 12,752   $ 12,752   $ 14,161
[1] This table excludes the gross value of fully amortized intangible assets totaling $9.7 million and $9.0 million at June 30, 2016 and December 31, 2015, respectively.