Leases - Supplemental information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash paid for amounts included in measurement of lease liabilities:
Operating cash outflows for operating leases	$ 1,854	$ 2,082	$ 2,141
Operating leases	$ 807	$ 6,835	$ 6,365
Other assets	Other assets	Other assets
Operating lease right-of-use assets	$ 3,209	$ 4,201
Accrued expenses and other current liabilities	Accrued expenses and other current liabilities	Accrued expenses and other current liabilities
Operating lease, liability, current	$ 1,669	$ 1,810
Other liabilities	Other liabilities	Other liabilities
Operating lease liabilities, non-current	$ 1,630	$ 2,536
Total operating lease liabilities	$ 3,299	$ 4,346
Weighted average remaining lease term	2 years 7 months 6 days	2 years 10 months 24 days	2 years 1 month 6 days
Weighted average discount rate	8.60%	8.80%	9.40%