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LOANS HELD FOR INVESTMENT - Selected Information on TDRs includes Recorded Investment by Loan Class and Modification Type (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 3,017 | $ 2,559 | $ 146,136 | $ 40,135
Forbearance [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 201 | 0 |  |
Trial Modification [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 95 | 464 |  |
Payment Plan [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Interest Rate [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 986 | 570 |  |
Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 736 | 328 |  |
Combination of Interest Rate Reduction And Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 203 | 137 |  |
Other Loan Modifications [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 796 | 1,060 |  |
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 212 | $ 464 | 981 | 1,679
Percentage of Total by Portfolio Classes | 0.01% | 0.02% |  |
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Forbearance [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 0 | $ 0 |  |
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Trial Modification [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 95 | 464 |  |
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Payment Plan [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Interest Rate [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 117 | 0 |  |
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Combination of Interest Rate Reduction And Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Other Loan Modifications [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 0 | $ 0 | 119 | 0
Percentage of Total by Portfolio Classes | 0.00% | 0.00% |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Forbearance [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 0 | $ 0 |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Trial Modification [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Payment Plan [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Interest Rate [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Combination of Interest Rate Reduction And Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Other Loan Modifications [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 0 | $ 0 | 126,974 | 32,384
Percentage of Total by Portfolio Classes | 0.00% | 0.00% |  |
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | Forbearance [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 0 | $ 0 |  |
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | Trial Modification [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | Payment Plan [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | Interest Rate [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | Combination of Interest Rate Reduction And Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | Other Loan Modifications [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 553 | $ 13 | 10,529 | 375
Percentage of Total by Portfolio Classes | 0.02% | 0.00% |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | Forbearance [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 201 | $ 0 |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | Trial Modification [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | Payment Plan [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | Interest Rate [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 21 | 13 |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 331 | 0 |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | Combination of Interest Rate Reduction And Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | Other Loan Modifications [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Auto loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 1,056 | $ 1,335 | 3,642 | 3,271
Percentage of Total by Portfolio Classes | 0.05% | 0.07% |  |
Consumer Portfolio Segment [Member] | Auto loans [Member] | Forbearance [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 0 | $ 0 |  |
Consumer Portfolio Segment [Member] | Auto loans [Member] | Trial Modification [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Auto loans [Member] | Payment Plan [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Auto loans [Member] | Interest Rate [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Auto loans [Member] | Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 205 | 174 |  |
Consumer Portfolio Segment [Member] | Auto loans [Member] | Combination of Interest Rate Reduction And Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 55 | 125 |  |
Consumer Portfolio Segment [Member] | Auto loans [Member] | Other Loan Modifications [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 796 | 1,036 |  |
Consumer Portfolio Segment [Member] | Personal Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 98 | $ 28 | 267 | 340
Percentage of Total by Portfolio Classes | 0.03% | 0.01% |  |
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Forbearance [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 0 | $ 0 |  |
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Trial Modification [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Payment Plan [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Interest Rate [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 9 |  |
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 7 | 14 |  |
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Combination of Interest Rate Reduction And Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 91 | 5 |  |
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Other Loan Modifications [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 965 | $ 548 | 3,085 | 1,553
Percentage of Total by Portfolio Classes | 0.32% | 0.17% |  |
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | Forbearance [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 0 | $ 0 |  |
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | Trial Modification [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | Payment Plan [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | Interest Rate [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 965 | 548 |  |
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | Combination of Interest Rate Reduction And Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | Other Loan Modifications [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Other Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 133 | $ 171 | $ 539 | $ 533
Percentage of Total by Portfolio Classes | 0.09% | 0.11% |  |
Consumer Portfolio Segment [Member] | Other Loans [Member] | Forbearance [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 0 | $ 0 |  |
Consumer Portfolio Segment [Member] | Other Loans [Member] | Trial Modification [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Other Loans [Member] | Payment Plan [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Other Loans [Member] | Interest Rate [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 0 | 0 |  |
Consumer Portfolio Segment [Member] | Other Loans [Member] | Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 76 | 140 |  |
Consumer Portfolio Segment [Member] | Other Loans [Member] | Combination of Interest Rate Reduction And Term Extension [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | 57 | 7 |  |
Consumer Portfolio Segment [Member] | Other Loans [Member] | Other Loan Modifications [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Loans modified to borrowers experiencing financial difficulty | $ 0 | $ 24 |  |

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