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Goodwill and Intangible Assets - Carrying Amounts and Useful Lives of Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 224,393 | $ 247,495
Accumulated amortization | (98,485) | (102,687)
Foreign currency exchange rate fluctuations | (1,041) | (1,122)
Net carrying amount | $ 124,867 | 143,686
Minimum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 1 year |
Maximum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 30 years |
Customer relationships |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 135,234 | 135,234
Accumulated amortization | (54,860) | (45,029)
Foreign currency exchange rate fluctuations | (1,058) | (1,185)
Net carrying amount | $ 79,316 | $ 89,020
Customer relationships | Minimum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 10 years | 10 years
Customer relationships | Maximum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 30 years | 30 years
Acquired technology |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 77,142 | $ 78,122
Accumulated amortization | (36,194) | (29,206)
Foreign currency exchange rate fluctuations | 5 | 42
Net carrying amount | $ 40,953 | $ 48,958
Acquired technology | Minimum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 3 years | 3 years
Acquired technology | Maximum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 20 years | 20 years
Backlog |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 1,150 | $ 21,350
Accumulated amortization | (791) | (20,703)
Foreign currency exchange rate fluctuations | 0 | 0
Net carrying amount | $ 359 | $ 647
Useful life | 4 years |
Backlog | Minimum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life |  | 1 year
Backlog | Maximum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life |  | 4 years
Trade names |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 7,650 | $ 7,650
Accumulated amortization | (5,037) | (4,361)
Foreign currency exchange rate fluctuations | 11 | 17
Net carrying amount | $ 2,624 | $ 3,306
Trade names | Minimum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 6 years | 6 years
Trade names | Maximum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 12 years | 12 years
Patents |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 3,217 | $ 3,239
Accumulated amortization | (1,603) | (1,488)
Foreign currency exchange rate fluctuations | 1 | 4
Net carrying amount | $ 1,615 | $ 1,755
Patents | Minimum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 2 years | 2 years
Patents | Maximum |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful life | 20 years | 20 years
Non-compete agreements |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount |  | $ 1,900
Accumulated amortization |  | (1,900)
Foreign currency exchange rate fluctuations |  | 0
Net carrying amount |  | $ 0
Useful life |  | 3 years

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