Leases - Supplemental balance sheet information (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Assets
Operating lease right-of-use assets	$ 2,658	$ 3,298
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets Noncurrent	Other Assets Noncurrent
Liabilities
Operating lease liability, current portion	$ 1,598	$ 1,527
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities Current	Other Liabilities Current
Operating lease liability, long-term	$ 1,384	$ 2,233
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities Noncurrent	Other Liabilities Noncurrent
Total operating lease liabilities	$ 2,982	$ 3,760