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Intangible Assets and Goodwill - Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 14,687 | $ 14,625
Accumulated amortization | (7,278) | (6,280)
Net value | 7,409 | 8,345
Patents |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | 6,261 | 6,199
Development programs |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 7,200 | 7,200
Developed technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average amortization period | 5 years |
Gross carrying amount | $ 1,226 | $ 1,226
Minimum | Patents |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average amortization period | 3 years |
Minimum | Development programs |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average amortization period | 2 years |
Maximum | Patents |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average amortization period | 5 years |
Maximum | Development programs |  |
Finite-Lived Intangible Assets [Line Items] |  |
Average amortization period | 4 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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- Definition Amount before 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 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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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