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Leases - Maturity of Operating Lease Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Jan. 01, 2019
Leases [Abstract]    
2022 $ 352  
2023 231  
2024 243  
2025 271  
2026 112  
Total lease payments 1,209  
Less imputed interest (198)  
Present value of operating lease liabilities $ 1,011 $ 1,200