CREDIT QUALITY ASSESSMENT - Performance of Modified Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 26,146	$ 162
Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	26,146	162
30-89 days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
90+ days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Non-accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial real estate: | Commercial investor real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	25,252	68
Commercial real estate: | Commercial investor real estate | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	25,252	68
Commercial real estate: | Commercial investor real estate | 30-89 days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial real estate: | Commercial investor real estate | 90+ days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial real estate: | Commercial investor real estate | Non-accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial real estate: | Commercial owner-occupied real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial real estate: | Commercial owner-occupied real estate | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial real estate: | Commercial owner-occupied real estate | 30-89 days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial real estate: | Commercial owner-occupied real estate | 90+ days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial real estate: | Commercial owner-occupied real estate | Non-accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial real estate: | Commercial AD&C
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	122	0
Commercial real estate: | Commercial AD&C | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	122	0
Commercial real estate: | Commercial AD&C | 30-89 days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial real estate: | Commercial AD&C | 90+ days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial real estate: | Commercial AD&C | Non-accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial business
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	230	94
Commercial business | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	230	94
Commercial business | 30-89 days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial business | 90+ days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
Commercial business | Non-accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
All Other loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	542	0
All Other loans | Current
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	542	0
All Other loans | 30-89 days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
All Other loans | 90+ days past due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0	0
All Other loans | Non-accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 0	$ 0