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Basis of Presentation and Summary of Significant Accounting Policies - Commercial License Rights (Details) - Licensing Agreements - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 38,298,000 | $ 38,298,000
Adjustments | (27,319,000) | (18,208,000)
Net | 10,979,000 | 20,090,000
Accumulated amortization and credit loss adjustments on finite-lived intangible assets | (21,300,000) |
Credit loss adjustments on finite-lived intangible assets | (6,000,000.0) |
Accounting Standards Update 2016-13 |  |
Finite-Lived Intangible Assets [Line Items] |  |
Credit loss adjustments on finite-lived intangible assets | (5,500,000) |
Aziyo and CorMatrix |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 17,696,000 | 17,696,000
Adjustments | (9,588,000) | (5,500,000)
Net | 8,108,000 | 12,196,000
Palvella |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 10,000,000 | 10,000,000
Adjustments | (10,000,000) | (7,492,000)
Net | 0 | 2,508,000
Selexis and Dianomi |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 10,602,000 | 10,602,000
Adjustments | (7,731,000) | (5,216,000)
Net | $ 2,871,000 | $ 5,386,000

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