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Goodwill and Intangible Assets, Net - Amortization Expense by Income Statement Caption (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | $ 36,306 | $ 35,410
Accumulated Amortization | (16,333) | (15,700)
Total | 19,973 | 19,710
Gross value of fully amortized intangible assets | 42,800 | 42,700
Capitalized software development costs |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 703 | 477
Accumulated Amortization | (4) | 0
Total | 699 | 477
Customer relationships |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 8,100 | 8,100
Accumulated Amortization | (4,506) | (4,329)
Total | 3,594 | 3,771
Developed and core technology |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 4,080 | 4,080
Accumulated Amortization | (3,117) | (3,044)
Total | 963 | 1,036
Distribution rights |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 336 | 352
Accumulated Amortization | (256) | (261)
Total | 80 | 91
Patents |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 22,287 | 21,601
Accumulated Amortization | (7,931) | (7,574)
Total | 14,356 | 14,027
Trademarks and trade names |  |
Finite-Lived Intangible Assets, Net [Abstract] |  |
Gross | 800 | 800
Accumulated Amortization | (519) | (492)
Total | $ 281 | $ 308

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