Commitments and Contingencies (Narrative) (Details) - USD ($)	1 Months Ended	3 Months Ended
	Apr. 30, 2020	Mar. 31, 2022	Dec. 31, 2021	Oct. 28, 2021
Lease term				16 years
Base annual rent for 2024				$ 250,000
Maximum allowance for tenant improvements				$ 7,300,000
Operating lease expected yearly base rent		$ 1,900,000
Annual increase in rent percentage		3.00%
Base rent at the end of lease term	$ 2,500,000
Period of lease and rental abatement credit	6 months
Lease and rental abatement credit	$ 800,000
Operating Lease, Liability	11,700,000
Operating Lease, Right-of-Use Asset	$ 11,000,000.0	$ 35,416,000	$ 35,852,000
Lessee, Operating Lease, Discount Rate	12.89%
Standby letter of credit		$ 5,000,000.0
Cash [Member]
Standby letter of credit	$ 1,200,000
Annual reduction of standby letter of credit	20.00%