Annual report pursuant to Section 13 and 15(d)

Basis of Presentation and Summary of Significant Accounting Policies - Commercial License Rights (Details)

v3.20.4
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