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Leases - Maturities of Operating Lease Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Leases [Abstract]    
2022 $ 537  
2023 551  
2024 567  
2025 582  
2026 598  
Thereafter 562  
Total operating lease payments 3,397  
Less: imputed interest (82)  
Total operating lease liabilities $ 3,315 $ 3,807