Amount of lease cost recognized by lessee for lease contract.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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Leases - Lease expense (Details) - Office and laboratory space - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Lessee, Lease, Description [Line Items]
Total lease expense	$ 60		$ 174
Rent expenses		$ 100		$ 100
General, Administrative, Research and Development
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 60		121
Short-term lease cost			$ 53