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DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of financial instruments fair value (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 USD ($) | Dec. 31, 2025 USD ($)
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 25,774 | $ 25,774
Investment, Type [Extensible Enumeration] | us-gaap:SubordinatedDebtMember | us-gaap:SubordinatedDebtMember
Fair Value | $ 25,774 | $ 25,774
Hierarchy Level | 3 | 3
Deposits |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 4,445,161 | $ 4,482,774
Fair Value | $ 4,442,627 | $ 4,480,770
Hierarchy Level | 3 | 3
Short-term borrowings |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 507,858 | $ 379,395
Fair Value | $ 507,858 | $ 379,395
Hierarchy Level | 3 | 3
Interest payable |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 3,250 | $ 3,612
Fair Value | $ 3,250 | $ 3,612
Hierarchy Level | 3 | 3
Unrecognized financial instruments (net of contractual value) | Commitments to originate loans |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Hierarchy Level | 3 | 3
Unrecognized financial instruments (net of contractual value) | Letters of credit |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 68 | $ 53
Fair Value | $ 68 | $ 53
Hierarchy Level | 3 | 3
Unrecognized financial instruments (net of contractual value) | Lines of credit |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Hierarchy Level | 3 | 3
Loans, net of allowance for credit losses |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 4,456,639 | $ 4,356,853
Fair Value | $ 4,374,501 | $ 4,261,757
Hierarchy Level | 3 | 3
Cash and cash equivalents |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 187,404 | $ 189,554
Fair Value | $ 187,404 | $ 189,554
Hierarchy Level | 1 | 1
Held-to-maturity securities |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 177,594 | $ 179,200
Fair Value | $ 160,520 | $ 162,629
Hierarchy Level | 2 | 2
Mortgage loans held for sale |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 6,823 | $ 6,838
Fair Value | $ 6,823 | $ 6,838
Hierarchy Level | 2 | 2
Interest receivable |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 19,716 | $ 18,068
Fair Value | $ 19,716 | $ 18,068
Hierarchy Level | 3 | 3
Investment in FHLB stock and other assets |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 27,720 | $ 20,079
Fair Value | $ 27,720 | $ 20,079
Hierarchy Level | 3 | 3

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