Commitments and Contingencies - Minimum lease commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Minimum lease commitments, Payments due by period:
2023	$ 65
2024	4,604
2025	4,095
2026	4,071
2027	3,633
Thereafter	34,245
Total future minimum lease payments	50,713
Less: Imputed interest	(14,734)
Total operating lease liabilities	35,979
Operating lease liability, current	$ 3,825	$ 3,333
Operating Lease, Liability, Current, Statement of Financial Position	Accrued expenses and other current liabilities
Long-term operating lease liabilities	$ 32,154	$ 33,581
Total operating lease liabilities	$ 35,979
Operating Lease, Liability, Statement of Financial Position	Long-term operating lease liabilities, Accrued expenses and other current liabilities