Segment Information - Summary of Information by Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
External revenues	$ 14,255	$ 7,721
Operating expenses	99,160	50,884
Operating loss	(84,905)	(43,163)
Unrestricted cash	41,678	21,897	$ 56,464
Sorrento Therapeutics
Segment Reporting Information [Line Items]
External revenues	7,269	2,510
Operating expenses	81,877	33,248
Operating loss	(74,608)	(30,738)
Unrestricted cash	31,109	11,777
Scilex
Segment Reporting Information [Line Items]
External revenues	6,986	5,211
Operating expenses	17,283	17,636
Operating loss	(10,297)	(12,425)
Unrestricted cash	$ 10,569	$ 10,120