Leases (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Dec. 31, 2020 ft²	Mar. 31, 2022 USD ($) ft²	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Feb. 28, 2019 ft²
Lessee, Lease, Description [Line Items]
Area leased, sublease agreement | ft²		33,019			20,433
Sub-subleased | ft²	8,115
Amortization expense		$ 300	$ 300
Operating Leases:
Accumulated amortization		350		$ 332
Other assets		7,030		7,048
Current portion of lease liabilities		$ 716		$ 693
Financial position		Current portion of lease liabilities		Current portion of lease liabilities
Other liabilities		$ 2,015		$ 2,201
Financial position		Other liabilities		Other liabilities
Total operating lease liabilities		$ 2,731		$ 2,894
Operating Leases
Operating Leases:
Gross cost		5,240		5,240
Accumulated amortization		1,986		1,803
Other assets		$ 3,254		$ 3,437