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Commitments and Contingencies (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Commitments And Contingencies Disclosure [Abstract]    
Weighted average remaining lease term 49 years  
Weighted average discount rate 8.60%  
Rent expense $ 0.1 $ 0.0