Investments - NANTibody - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Schedule Of Equity Method Investments [Line Items]
Net loss	$ (154,626,000)		$ (40,540,000)
Current assets of equity method investment	100,760,000	$ 96,373,000
Current liabilities of equity method investment	165,632,000	327,922,000
NANTibody
Schedule Of Equity Method Investments [Line Items]
Net loss		1,500,000
Current assets of equity method investment		2,400,000
Current liabilities of equity method investment		11,600,000
Noncurrent assets of equity method investment		100,000
Noncurrent liabilities of equity method investment		0
NANTibody
Schedule Of Equity Method Investments [Line Items]
Equity investments	$ 0	$ 0