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LOANS HELD FOR INVESTMENT - Performance of Loans Modified During Period (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] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period | $ 3,017 | $ 2,559 | $ 146,136 | $ 40,135
30-59 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 320 | 328
60-89 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 243 | 109
90 days or more Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 261 | 243
Total Delinquency [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 824 | 680
Current [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 145,312 | 39,455
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period | 212 | 464 | 981 | 1,679
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | 30-59 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 37
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | 60-89 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | 90 days or more Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Total Delinquency [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 37
Residential Portfolio Segment [Member] | Conventional Residential Mortgage Loans [Member] | Current [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 981 | 1,642
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period | 0 | 0 | 119 | 0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | 30-59 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | 60-89 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | 90 days or more Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Total Delinquency [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Current [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 119 | 0
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period | 0 | 0 | 126,974 | 32,384
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | 30-59 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | 60-89 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | 90 days or more Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | Total Delinquency [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Commercial Portfolio Segment [Member] | Commercial Mortgage Loans [Member] | Current [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 126,974 | 32,384
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period | 553 | 13 | 10,529 | 375
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | 30-59 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 6 | 13
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | 60-89 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 4 | 0
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | 90 days or more Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | Total Delinquency [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 10 | 13
Commercial Portfolio Segment [Member] | Commercial and Industrial Loans [Member] | Current [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 10,519 | 362
Consumer Portfolio Segment [Member] | Automobile Loan [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period | 1,056 | 1,335 | 3,642 | 3,271
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | 30-59 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 78 | 19
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | 60-89 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 99 | 3
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | 90 days or more Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 152 | 65
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Total Delinquency [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 329 | 87
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Current [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 3,313 | 3,184
Consumer Portfolio Segment [Member] | Personal Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period | 98 | 28 | 267 | 340
Consumer Portfolio Segment [Member] | Personal Loans [Member] | 30-59 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 11
Consumer Portfolio Segment [Member] | Personal Loans [Member] | 60-89 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Consumer Portfolio Segment [Member] | Personal Loans [Member] | 90 days or more Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 0
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Total Delinquency [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 0 | 11
Consumer Portfolio Segment [Member] | Personal Loans [Member] | Current [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 267 | 329
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period | 965 | 548 | 3,085 | 1,553
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | 30-59 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 218 | 217
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | 60-89 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 117 | 92
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | 90 days or more Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 99 | 147
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | Total Delinquency [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 434 | 456
Consumer Portfolio Segment [Member] | Credit Card Receivables [Member] | Current [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 2,651 | 1,097
Consumer Portfolio Segment [Member] | Other Loans [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period | $ 133 | $ 171 | 539 | 533
Consumer Portfolio Segment [Member] | Other Loans [Member] | 30-59 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 18 | 31
Consumer Portfolio Segment [Member] | Other Loans [Member] | 60-89 Days Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 23 | 14
Consumer Portfolio Segment [Member] | Other Loans [Member] | 90 days or more Past Due [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 10 | 31
Consumer Portfolio Segment [Member] | Other Loans [Member] | Total Delinquency [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | 51 | 76
Consumer Portfolio Segment [Member] | Other Loans [Member] | Current [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Financing Receivable Excluding Accrued Interest Modified Period |  |  | $ 488 | $ 457

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