v3.26.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans with Payment Default, Modified (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans $ 701 $ 2,271
Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 1,641 0
Interest Rate Reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 0 0
Commercial and industrial | Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 375 0
Commercial and industrial | Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 0 0
Commercial and industrial | Interest Rate Reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 0 0
Real estate: | Commercial real estate (including multi-family residential) | Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 154 904
Real estate: | Commercial real estate (including multi-family residential) | Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 0 0
Real estate: | Commercial real estate (including multi-family residential) | Interest Rate Reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 0 0
Real estate: | Commercial real estate construction and land development | Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 172 290
Real estate: | Commercial real estate construction and land development | Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 0 0
Real estate: | Commercial real estate construction and land development | Interest Rate Reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 0 0
Real estate: | 1-4 family residential (including home equity) | Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 0 1,077
Real estate: | 1-4 family residential (including home equity) | Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans 1,641 0
Real estate: | 1-4 family residential (including home equity) | Interest Rate Reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis, subsequent default loans $ 0 $ 0