Leases - Balance Sheet related information (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 345	$ 284
Office and laboratory space
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	345	284
Operating lease liability	228	229
Operating lease liability, net of current portion	122	62
Total operating lease liability	$ 350	$ 291