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Leases - Future Minimum Lease Payments (Details)
$ in Thousands
Sep. 30, 2021
USD ($)
Lessee, Operating Lease, Liability, Payment, Due [Abstract]  
2021 $ 321
2022 1,286
2023 1,286
2024 1,326
2025 1,407
Thereafter 4,807
Total undiscounted lease payments $ 10,433