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INTANGIBLE ASSETS - Future Amortization (Details) - Riverview Bank - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2022 $ 27  
2023 24  
2024 21  
2025 17  
2026 14  
After five years 25  
Finite-Lived Intangible Assets, Net, Total $ 128 $ 158