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Borrowings (Details) - USD ($)
Jun. 30, 2025
Dec. 31, 2024
Short-Term Debt [Line Items]    
Unsecured line of credit $ 0 $ 0
Federal funds purchased 0 $ 0
Line of Credit | Pacific Coast Bankers’ Bank | Federal Funds Purchased    
Short-Term Debt [Line Items]    
Line of credit facility, maximum borrowing capacity 50,000,000.0  
Line of Credit | First National Bankers’ Bank | Federal Funds Purchased    
Short-Term Debt [Line Items]    
Line of credit facility, maximum borrowing capacity 10,000,000.0  
Line of Credit | Community Bankers’ Bank | Federal Funds Purchased    
Short-Term Debt [Line Items]    
Line of credit facility, maximum borrowing capacity $ 8,000,000.0