Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Apr. 30, 2020	Dec. 31, 2023	Dec. 31, 2022	Nov. 30, 2022	Nov. 26, 2022	Oct. 28, 2021
Lease term						16 years
Base annual rent for 2024						$ 250
Maximum allowance for tenant improvements						7,300
Tenant allowances						5,400
Operating lease expected yearly base rent	$ 1,900
Annual increase in rent percentage	3.00%
Base rent at the end of lease term	$ 2,500
Period of lease and rental abatement credit	6 months
Rent expense under operating leases		$ 7,400	$ 6,300
Cash payments for operating leases		3,500	2,700
Operating Lease, Liability	$ 11,700	38,064			$ 37,000
Operating Lease, Right-of-Use Asset	$ 11,000	44,717	43,035		$ 33,800
Lessee, Operating Lease, Discount Rate	12.89%			11.80%
Standby letter of credit						$ 5,000
Increase (decrease) operating lease right-of-use and liability		$ (13,451)	$ 3,643
2021 Lease [Member]
Lessee, Operating Lease, Discount Rate		14.27%
Increase (decrease) operating lease right-of-use and liability		$ 2,700
Cash [Member]
Standby letter of credit	$ 1,200	$ 700
Annual reduction of standby letter of credit	20.00%