Goodwill and Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Schedule of Goodwill and Intangible Assets [Line Items]
Goodwill	$ 16,937,000		$ 16,937,000		$ 16,937,000
Goodwill impairment loss	0	$ 0	0	$ 0
Amortization expense of intangible assets			918,000	918,000
Finite lived intangible assets, impairment charges			832,000
Research and Development Expenses
Schedule of Goodwill and Intangible Assets [Line Items]
Amortization expense of intangible assets	300,000	300,000	900,000	900,000
Finite lived intangible assets, impairment charges	800,000
Humabs
Schedule of Goodwill and Intangible Assets [Line Items]
Indefinite-lived intangible assets IPR&D	31,200,000
Impairment of intangible assets, indefinite-lived	$ 0	$ 0	0	$ 0
Humabs | Developed Technology
Schedule of Goodwill and Intangible Assets [Line Items]
Acquisition of finite-lived intangible assets			4,800,000
Statera | Developed Technology
Schedule of Goodwill and Intangible Assets [Line Items]
Acquisition of finite-lived intangible assets			$ 2,200,000