Leases (Details) - USD ($) $ in Thousands	1 Months Ended	9 Months Ended
	Dec. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Leasesof Lessor Disclosure [Abstract]
Lease description	the Company entered into an agreement to lease approximately 10.3 square feet of office space in New York, New York (“Office Lease”), which commenced in April 2021. The office space is owned by an affiliate of Deerfield Management Company, L.P., which together with its affiliates beneficially owned more than 5% of the Company’s voting securities at the time the lease was executed. Management determined that the lease terms were on an arms-length basis. Annual rent is approximately $1,117.
Cash balances	$ 745
Operating leases		$ 707	$ 61
Right of use asset obtained in exchange for operating lease liabilities		$ 6,549