Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets, Gross Carrying Amount	$ 11,595	$ 11,091
Finite Lived Intangible Assets, Accumulated Amortization	2,850	2,311
Finite Lived Intangible Assets, Net Book Value	8,745	8,780
Indefinite-Lived Intangible Assets, Impairment		5,099
Intangible Assets, Gross Carrying Amount	22,255	26,388
Intangible assets, Net Book Value	19,405	18,978
License agreement
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets, Gross Carrying Amount	11,595	11,091
Finite Lived Intangible Assets, Accumulated Amortization	2,850	2,311
Finite Lived Intangible Assets, Net Book Value	8,745	8,780
Acquired IPR&D assets
Schedule Of Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets, Gross Carrying Amount	10,660	15,297
Indefinite-Lived Intangible Assets, Impairment		5,099
Indefinite-Lived Intangible Assets, Net Book Value	$ 10,660	$ 10,198