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Goodwill and Intangible Assets, Net - Components of Intangible Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | $ 62,075 | $ 61,766
Accumulated Amortization | (35,367) | (32,725)
Net | 26,708 | 29,041
Gross value of fully amortized intangible assets | 6,800 | 6,000
Distribution rights |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 335 | 344
Accumulated Amortization | (176) | (165)
Net | 159 | 179
Patents |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 13,662 | 13,250
Accumulated Amortization | (5,218) | (5,310)
Net | 8,444 | 7,940
Trademarks and trade names |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 2,786 | 2,786
Accumulated Amortization | (1,746) | (1,594)
Net | 1,040 | 1,192
Developed and core technology |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 12,560 | 12,560
Accumulated Amortization | (7,079) | (6,071)
Net | 5,481 | 6,489
Capitalized software development costs |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 198 | 142
Accumulated Amortization | (113) | (77)
Net | 85 | 65
Customer relationships |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 32,534 | 32,534
Accumulated Amortization | (21,035) | (19,395)
Net | 11,499 | 13,139
Order backlog |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 0 | 150
Accumulated Amortization | 0 | (113)
Net | $ 0 | $ 37

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