Leases - Balance Sheet related information (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 174	$ 284
Office and laboratory space
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	174	284
Operating lease liability	180	229
Operating lease liability, net of current portion		62
Total operating lease liability	$ 180	$ 291