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Leases - Future Minimum Lease Payments (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Operating Leases    
2022 $ 551  
2023 737  
2024 754  
2025 775  
2026 796  
Thereafter 136  
Total future minimum lease payments 3,749  
Less imputed interest (630)  
Total $ 3,119 $ 869