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Commitments and Contingencies - Operating and Finance Leases (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Commitments and Contingencies    
Operating lease, weighted average discount rate 5.80%  
Operating lease, weighted average remaining lease term 5 years  
Operating lease    
2023 $ 1,102,000  
2024 1,163,000  
2025 1,227,000  
2026 1,294,000  
2027 1,365,000  
Total future minimum lease payments 6,151,000  
Imputed interest (843,000)  
Total 5,308,000 $ 6,910,000
Finance lease    
Total   162,510,000
Fixed operating lease cost 601,000 731,000
Fixed lease finance cost 2,600,000 2,800,000
Variable operating lease costs $ 97,000 $ 2,600,000