Asset Acquisition - Narrative (Details) - Immulus, Inc - USD ($)	1 Months Ended	12 Months Ended
	May 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Percentage of voting interests acquired (as a percent)	100.00%
Payments to acquire businesses, gross	$ 3,500,000
Stock issued during period, shares, acquisitions (in shares)	688,463
Stock issued during period value acquisitions	$ 4,000,000
Asset acquisition, transaction costs	500,000
Total consideration	8,000,000
Milestone Payments
Business Acquisition [Line Items]
Payments expense incurred		$ 0	$ 0
Maximum | Milestone Payments
Business Acquisition [Line Items]
Payments payable	$ 37,000,000