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Goodwill and Intangible Assets - Intangible assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | $ 187,057 |  | $ 187,057 |  | $ 162,043
Accumulated Amortization | (117,052) |  | (117,052) |  | (116,208)
Net | 70,005 |  | $ 70,005 |  | 45,835
Weighted Average Useful Life Remaining (in years) |  |  | 7 years 7 months 6 days |  |
Amortization expense | 3,302 | $ 2,502 | $ 5,980 | $ 4,929 |
Customer relationships |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | 49,886 |  | 49,886 |  | 53,062
Accumulated Amortization | (45,145) |  | (45,145) |  | (45,613)
Net | 4,741 |  | $ 4,741 |  | 7,449
Weighted Average Useful Life Remaining (in years) |  |  | 2 years 3 months 18 days |  |
Acquired technology |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | 36,290 |  | $ 36,290 |  | 17,518
Accumulated Amortization | (6,301) |  | (6,301) |  | (5,430)
Net | 29,989 |  | $ 29,989 |  | 12,088
Weighted Average Useful Life Remaining (in years) |  |  | 6 years 6 months |  |
Trade names |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | 31,227 |  | $ 31,227 |  | 20,448
Accumulated Amortization | (11,020) |  | (11,020) |  | (10,438)
Net | 20,207 |  | $ 20,207 |  | 10,010
Weighted Average Useful Life Remaining (in years) |  |  | 11 years 1 month 6 days |  |
Patent costs |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | 20,836 |  | $ 20,836 |  | 21,852
Accumulated Amortization | (11,600) |  | (11,600) |  | (11,812)
Net | 9,236 |  | $ 9,236 |  | 10,040
Weighted Average Useful Life Remaining (in years) |  |  | 11 years |  |
Trade secrets |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | 19,585 |  | $ 19,585 |  | 19,924
Accumulated Amortization | (19,130) |  | (19,130) |  | (18,971)
Net | 455 |  | $ 455 |  | 953
Weighted Average Useful Life Remaining (in years) |  |  | 7 months 6 days |  |
Acquired patents |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | 16,202 |  | $ 16,202 |  | 16,257
Accumulated Amortization | (15,945) |  | (15,945) |  | (15,945)
Net | 257 |  | $ 257 |  | 312
Weighted Average Useful Life Remaining (in years) |  |  | 6 years 4 months 24 days |  |
Other |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | 13,031 |  | $ 13,031 |  | 12,982
Accumulated Amortization | (7,911) |  | (7,911) |  | (7,999)
Net | $ 5,120 |  | $ 5,120 |  | $ 4,983
Weighted Average Useful Life Remaining (in years) |  |  | 3 years 10 months 24 days |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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