Leases - Lease cost classification (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Finance lease cost:
Interest on lease liabilities	$ 14	$ 20
Operating lease cost	806	1,516
Total lease cost	965	1,836
Cost service and other revenue
Finance lease cost:
Amortization of right-of-use assets	18	34
Depreciation and amortization
Finance lease cost:
Amortization of right-of-use assets	$ 127	$ 266