Leases - Operating lease costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Leases
Operating lease costs	$ 1,116	$ 1,298	$ 2,222	$ 2,660
Variable lease costs		49		51
Total lease costs	$ 1,116	$ 1,347	$ 2,222	$ 2,711