License Agreements - Additional Information (Details) - License Agreements - UC Regents - USD ($)	1 Months Ended	12 Months Ended
	Aug. 31, 2015	Dec. 31, 2020
License Agreements [Line Items]
Payment of non-refundable upfront license fee	$ 400,000
Payment of annual license maintenance fee	10,000
Payment of annual license maintenance fee after first year	$ 25,000
Percentage of royalty payments on net sales of licensed product	3.00%
Percentage of royalty payments on net sales of method use licensed product	1.00%
Annual minimum royalty payment on net sales	$ 1,000,000
Aggregate contingency payment on certain events milestones	$ 18,200,000
Milestone and annual royalty paid		$ 2,400,000