FHLB ADVANCES - Summary of FHLB Advances (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
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| FHLB ADVANCES AND OTHER BORROWINGS | ||
| Total FHLB advances | $ 258,000 | $ 293,000 |
| FHLB advances, collateral for mortgage and home equity line of credit loans | 2,580,000 | 2,870,000 |
| Line of credit facility, maximum borrowing capacity | 770,000 | |
| Midland States Bank | Fixed rate fixed term maturing October 2029 | ||
| FHLB ADVANCES AND OTHER BORROWINGS | ||
| Total FHLB advances | $ 108,000 | $ 168,000 |
| Interest rate | 3.93% | 4.08% |
| Midland States Bank | Putable fixed rate maturing July 2034 | ||
| FHLB ADVANCES AND OTHER BORROWINGS | ||
| Total FHLB advances | $ 150,000 | $ 125,000 |
| Interest rate | 3.56% | 4.00% |
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- Definition Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of the collateral pledged in support of federal home loan bank advances outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition States the interest rate applicable to Federal Home Loan Bank advances outstanding as of the Balance Sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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