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Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 34,853 | $ 29,286
Accumulated amortization | (11,674) | (10,038)
Total intangible assets, net | 23,179 | 19,248
Tradename [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 555 | 555
Tradename [Member] | Minimum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful lives (in years) | 5 years |
Tradename [Member] | Maximum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful lives (in years) | 7 years |
Patents and technological know-how [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 30,994 | 25,427
Patents and technological know-how [Member] | Minimum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful lives (in years) | 10 years |
Patents and technological know-how [Member] | Maximum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful lives (in years) | 20 years |
Proprietary software [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 2,981 | 2,981
Proprietary software [Member] | Minimum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful lives (in years) | 3 years |
Proprietary software [Member] | Maximum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful lives (in years) | 15 years |
Other [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 323 | $ 323
Other [Member] | Minimum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful lives (in years) | 3 years |
Other [Member] | Maximum [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated useful lives (in years) | 5 years |

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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