v3.26.3
Borrowings - Additional Information (Details) - USD ($)
Sep. 30, 2026
Mar. 31, 2026
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
Pledged commercial real estate loans carrying value of borrowings through discount window 13,000,000 13,000,000
Remaining availability for FRB borrowings 10,000,000 10,000,000
Investment Securities Pledged    
Line of Credit Facility [Line Items]    
FHLB borrowings, collateral for advances 17,000  
Loans Pledged    
Line of Credit Facility [Line Items]    
FHLB borrowings, collateral for advances 75,000,000  
Private Banker's Bank    
Line of Credit Facility [Line Items]    
Line of credit, maximum borrowing capacity $ 5,000,000 $ 5,000,000