Summary of Significant Accounting Policies - Revenue Recognition - Collaboration Revenue (Details) - USD ($) $ in Thousands				3 Months Ended		6 Months Ended
	Jun. 21, 2022	Sep. 03, 2020	Sep. 24, 2018	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Stockholders' Equity
License agreement term (in years)		2 years 6 months
Collaboration revenue				$ 0	$ 0	$ 0	$ 0
Knight
Stockholders' Equity
License agreement term (in years)			15 years
Transfer price receivable upon achievement of certain regulatory and sales milestones			$ 18,000
Syn World
Stockholders' Equity
Threshold regulatory expense reimbursement cap	$ 2,000
Non refundable cash payments receivable	$ 5,000
License agreement term (in years)	2 years