v3.26.1
Borrowings - Summary of Borrowings (Details) - USD ($)
3 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Line of Credit Facility [Line Items]      
Outstanding advances $ 0   $ 0
Total borrowing capacity 47,000,000   $ 47,000,000
Private Banker's Bank      
Line of Credit Facility [Line Items]      
Maximum amount outstanding at any month-end during the period 0 $ 466,000  
FHLB of Topeka      
Line of Credit Facility [Line Items]      
Average balance outstanding 0 151,000  
Maximum amount outstanding at any month-end during the period 0 8,000,000  
Federal Reserve Bank Advances      
Line of Credit Facility [Line Items]      
Maximum amount outstanding at any month-end during the period 0 0  
Federal Home Loan Bank Of Topeka and Private Banker's Bank      
Line of Credit Facility [Line Items]      
Maximum amount outstanding at any month-end during the period $ 0 $ 8,466,000  
Average interest rate during the period   5.30%