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Intangible Assets - Carrying Value of Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Intangible Assets [Line Items] |  |  |
Goodwill, Gross carrying amount | $ 1,243,669 | $ 1,206,877 |
Goodwill, Accumulated Amortization | 0 | 0 |
Goodwill, Net Carrying Amount | 1,243,669 | 1,206,877 | $ 1,208,587
Finite-lived intangible assets, Gross Carrying Amount | 789,335 | 733,065 |
Finite-lived intangible assets, Accumulated Amortization | (490,736) | (414,204) |
Finite-lived intangible assets, Net Carrying Amount | 298,599 | 318,861 |
Indefinite-lived intangible assets, Carrying Amount | 40,906 | 41,070 |
Intangible assets, Gross Carrying Amount | 830,241 | 774,135 |
Intangible assets, Net Carrying Amount | 339,505 | 359,931 | $ 424,932
Trademarks |  |  |
Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible assets, Carrying Amount | 40,106 | 40,270 |
In-process research and development |  |  |
Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible assets, Carrying Amount | 800 | 800 |
Developed technology |  |  |
Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, Gross Carrying Amount | 413,310 | 399,095 |
Finite-lived intangible assets, Accumulated Amortization | (331,696) | (280,301) |
Finite-lived intangible assets, Net Carrying Amount | 81,614 | 118,794 |
Customer relationships |  |  |
Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, Gross Carrying Amount | 297,595 | 258,798 |
Finite-lived intangible assets, Accumulated Amortization | (110,732) | (94,557) |
Finite-lived intangible assets, Net Carrying Amount | 186,863 | 164,241 |
Trademarks |  |  |
Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, Gross Carrying Amount | 56,393 | 54,897 |
Finite-lived intangible assets, Accumulated Amortization | (30,213) | (24,443) |
Finite-lived intangible assets, Net Carrying Amount | 26,180 | 30,454 |
In-process research and development |  |  |
Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, Gross Carrying Amount | 10,702 | 10,708 |
Finite-lived intangible assets, Accumulated Amortization | (7,160) | (5,336) |
Finite-lived intangible assets, Net Carrying Amount | 3,542 | 5,372 |
Backlog |  |  |
Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, Gross Carrying Amount | 11,335 | 9,567 |
Finite-lived intangible assets, Accumulated Amortization | (10,935) | (9,567) |
Finite-lived intangible assets, Net Carrying Amount | $ 400 | $ 0 |

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