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Goodwill and Intangible Assets - Carrying Amounts and Useful Lives of Intangible Assets (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Intangible Assets [Line Items] |  |
Gross carrying amount (1) | $ 284,045 | $ 286,448
Accumulated amortization | (127,511) | (117,482)
Foreign currency exchange rate fluctuations | (759) | (755)
Net carrying amount | 155,775 | 168,211
Customer relationships |  |
Intangible Assets [Line Items] |  |
Gross carrying amount (1) | 187,889 | 187,889
Accumulated amortization | (70,588) | (64,254)
Foreign currency exchange rate fluctuations | (780) | (777)
Net carrying amount | $ 116,521 | $ 122,858
Customer relationships | Minimum |  |
Intangible Assets [Line Items] |  |
Useful life | 10 years | 10 years
Customer relationships | Maximum |  |
Intangible Assets [Line Items] |  |
Useful life | 30 years | 30 years
Acquired technology |  |
Intangible Assets [Line Items] |  |
Gross carrying amount (1) | $ 85,666 | $ 86,029
Accumulated amortization | (49,904) | (44,851)
Foreign currency exchange rate fluctuations | 6 | 6
Net carrying amount | $ 35,768 | $ 41,184
Acquired technology | Minimum |  |
Intangible Assets [Line Items] |  |
Useful life | 5 years | 5 years
Acquired technology | Maximum |  |
Intangible Assets [Line Items] |  |
Useful life | 20 years | 20 years
Backlog |  |
Intangible Assets [Line Items] |  |
Gross carrying amount (1) |  | $ 1,150
Accumulated amortization |  | (1,078)
Foreign currency exchange rate fluctuations |  | 0
Net carrying amount |  | $ 72
Useful life |  | 4 years
Trade names |  |
Intangible Assets [Line Items] |  |
Gross carrying amount (1) | $ 7,000 | $ 7,850
Accumulated amortization | (5,327) | (5,794)
Foreign currency exchange rate fluctuations | 14 | 14
Net carrying amount | $ 1,687 | $ 2,070
Trade names | Minimum |  |
Intangible Assets [Line Items] |  |
Useful life | 1 year | 1 year
Trade names | Maximum |  |
Intangible Assets [Line Items] |  |
Useful life | 12 years | 12 years
Patents |  |
Intangible Assets [Line Items] |  |
Gross carrying amount (1) | $ 2,890 | $ 2,930
Accumulated amortization | (1,542) | (1,455)
Foreign currency exchange rate fluctuations | 1 | 2
Net carrying amount | $ 1,349 | $ 1,477
Patents | Minimum |  |
Intangible Assets [Line Items] |  |
Useful life | 2 years | 2 years
Patents | Maximum |  |
Intangible Assets [Line Items] |  |
Useful life | 20 years | 20 years
Non-compete agreements |  |
Intangible Assets [Line Items] |  |
Gross carrying amount (1) | $ 600 | $ 600
Accumulated amortization | (150) | (50)
Foreign currency exchange rate fluctuations | 0 | 0
Net carrying amount | $ 450 | $ 550
Useful life | 3 years | 3 years

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