Basis of Presentation and Summary of Significant Accounting Policies - Commercial License Rights (Details) - Licensing Agreements - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Definite lived intangible assets	$ 38,298	$ 36,298
Less: accumulated amortization attributed to principal or research and development	(18,208)	(4,838)
Total commercial license and other economic rights, net	20,090	31,460
Aziyo & CorMatrix
Finite-Lived Intangible Assets [Line Items]
Definite lived intangible assets	17,696	17,696
Palvella
Finite-Lived Intangible Assets [Line Items]
Definite lived intangible assets	10,000	10,000
Selexis
Finite-Lived Intangible Assets [Line Items]
Definite lived intangible assets	8,602	8,602
Dianomi
Finite-Lived Intangible Assets [Line Items]
Definite lived intangible assets	$ 2,000	$ 0