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ADVANCES FROM FEDERAL HOME LOAN BANK (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
ADVANCES FROM FEDERAL HOME LOAN BANK |  |
Outstanding term advances from Federal Home Loan Bank | $ 0 | $ 0
Investment securities with carrying values | 284,800 | 287,700
Loans with carrying values | 2,170,000 | 2,060,000
Advance equivalents | 1,710,000 | $ 1,710,000
Federal Home Loan Bank of Des Moines |  |
ADVANCES FROM FEDERAL HOME LOAN BANK |  |
Credit under a borrowing arrangement | $ 1,240,000 |

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