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Branch Acquisition - Future Amortization (Details) - Riverview Bank
$ in Thousands
Jun. 30, 2021
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2021 $ 19
2022 30
2023 27
2024 24
2025 21
After five years 56
Finite-Lived Intangible Assets, Net, Total $ 177