v3.26.1
Borrowings - Additional Information (Details) - USD ($)
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Line of Credit Facility [Line Items]      
Outstanding borrowings $ 0 $ 0  
Remaining availability for FHLB borrowings 47,000,000 47,000,000  
Letters of credit outstanding 13,000,000 13,000,000  
Remaining availability for FRB borrowings 10,000,000 10,000,000  
Pledged commercial real estate loans carrying value of borrowings through discount window 13,000,000 $ 13,000,000  
Investment Securities Pledged      
Line of Credit Facility [Line Items]      
FHLB borrowings, collateral for advances 19,000,000    
Loans Pledged      
Line of Credit Facility [Line Items]      
FHLB borrowings, collateral for advances 80,000,000    
Private Banker's Bank      
Line of Credit Facility [Line Items]      
Line of credit, maximum borrowing capacity $ 5,000,000   $ 5,000,000