Commitments and Contingencies - Operating lease costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Operating lease costs:
Lease expense	$ 609	$ 609	$ 1,218	$ 1,218
Short-term lease expense	14	14	28	27
Variable lease expense	365	338	658	673
Lease, Cost	988	961	1,904	1,918
Other information:
Operating cash flows used for operating leases	$ 575	$ 650	$ 1,711	$ 1,753
Weighted-average remaining lease term in years	2 years 2 months 12 days	3 years 2 months 12 days	2 years 2 months 12 days	3 years 2 months 12 days
Weighted-average incremental borrowing rate	6.73%	6.72%	6.73%	6.72%