Summary of Significant Accounting Policies - Asset acquisition (Details) - In-process research and development acquisition - USD ($) $ in Millions		6 Months Ended
	Sep. 10, 2021	Jun. 30, 2022
Asset Acquisition [Line Items]
Asset acquisition, consideration transferred	$ 35.6
Issuance of common stock	276,346
Fair value of common stock issued	$ 30.9
Cash consideration	3.9
Net liabilities assumed	0.2
Acquisition related costs	0.6
Value of additional shares potentially issuable	$ 35.0
Number of additional shares potentially issuable	269,547
Estimated milestone performance period		24 months