Commitments and Contingencies (Details) - USD ($)			3 Months Ended
	Apr. 02, 2021	Dec. 01, 2020	Mar. 31, 2021	Mar. 31, 2020
Commitments and Contingencies (Details) [Line Items]
Operating leases			$ 52	$ 0
Lease description		the Company entered into a long-term lease for office space for a term of seven years. 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.
Subsequent Event [Member]
Commitments and Contingencies (Details) [Line Items]
Lease description	the Company met the criteria to commence accounting for the operating lease arrangement described above. The lease expires in May 2028 and includes approximately $8.2 million of legally binding minimum lease payments. The Company is in the process of completing its accounting for this operating lease arrangement, including determining the incremental borrowing rate to discount the remaining lease payments associated with the lease liability and right-of-use asset. The Company estimates that upon commencement the Company’s recognition of this lease will result in a right-of-use asset and operating lease liability of approximately $6.0 million.