Leases - Lease-related balances (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Leases
Right of use assets	$ 8,615	$ 10,533
Lease liabilities	$ 8,655	$ 10,591
Weighted average lease term (in years)	6 years 3 months	6 years 5 months 19 days
Weighted average discount rate (in percent)	2.04%	2.16%