Commitments and Contingencies (Operating leases) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Commitments and Contingencies.
Operating cash flows from operating leases	$ 3,355	$ 5,197
Weighted-average remaining lease term, years	12 years 6 months 3 days	12 years 9 months 14 days
Weighted-average discount rate, %	13.90%	13.90%