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Leases - Future Minimum Lease Payments (Details)
$ in Thousands
Sep. 30, 2021
USD ($)
Commitments And Contingencies Disclosure [Abstract]  
2021 $ 203
2022 697
2023 571
2024 571
2025 and thereafter 1,428
Total future minimum lease payments 3,470
Less: imputed interest (226)
Present value of lease liabilities $ 3,244