Commitments and Contingencies (Operating leases) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Commitments and Contingencies.
Operating cash flows from operating leases	$ 2,006	$ 3,223
Weighted-average remaining lease term, years	11 years 11 months 19 days		12 years 9 months 14 days
Weighted-average discount rate, %	13.90%		13.90%