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Leases - Future Maturities of Lease Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Leases [Abstract]    
2022 $ 77  
2023 38  
2024 38  
2025 38  
2026 38  
Thereafter 92  
Total lease payments 321  
Less: Imputed interest (36)  
Total $ 285 $ 483