Leases - Lease costs and other lease information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Lease costs
Operating lease cost	$ 425	$ 429	$ 1,250	$ 1,417
Variable lease cost	187	192	550	583
Short-term lease cost	188	89	276	172
Finance lease cost
Interest on lease liabilities	2	7	7	22
Amortization of right-of-use assets	29	29	87	87
Sublease Income	(63)	(51)	(179)	(163)
Net lease cost	768	695	1,991	2,118
Cash paid for amounts included in the measurement of lease liabilities operating cash flows from operating leases	400	$ 411	1,184	$ 1,372
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 1,065		$ 1,452