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INVESTMENT SECURITIES - Fair value and unrealized losses on investments (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
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AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than 12 Months, Fair Value | $ 47,555 | $ 4,409
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (464) | (109)
Available-for-sale securities, 12 Months or More, Fair Value | 380,556 | 404,612
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (39,378) | (38,331)
Available-for-sale securities, Fair Value | 428,111 | 409,021
Available-for-sale securities, Unrealized Loss | (39,842) | (38,440)
HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 160,520 | 162,629
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (17,074) | (16,571)
Held-to-maturity securities, Fair Value | 160,520 | 162,629
Held-to-maturity securities, Unrealized Losses | (17,074) | (16,571)
Agency mortgage-backed securities. |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than 12 Months, Fair Value | 20,762 |
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (21) |
Available-for-sale securities, 12 Months or More, Fair Value | 236,437 | 241,503
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (25,899) | (25,174)
Available-for-sale securities, Fair Value | 257,199 | 241,503
Available-for-sale securities, Unrealized Loss | (25,920) | (25,174)
HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 64,736 | 65,332
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (5,820) | (5,694)
Held-to-maturity securities, Fair Value | 64,736 | 65,332
Held-to-maturity securities, Unrealized Losses | (5,820) | (5,694)
Agency collateralized mortgage obligations |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than 12 Months, Fair Value | 9,098 |
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (95) |
Available-for-sale securities, 12 Months or More, Fair Value | 60,041 | 70,774
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (5,835) | (6,065)
Available-for-sale securities, Fair Value | 69,139 | 70,774
Available-for-sale securities, Unrealized Loss | (5,930) | (6,065)
HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 90,194 | 91,637
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (10,739) | (10,424)
Held-to-maturity securities, Fair Value | 90,194 | 91,637
Held-to-maturity securities, Unrealized Losses | (10,739) | (10,424)
Small Business Administration securities |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than 12 Months, Fair Value | 6,971 |
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (59) |
Available-for-sale securities, 12 Months or More, Fair Value | 47,445 | 48,807
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (5,447) | (5,163)
Available-for-sale securities, Fair Value | 54,416 | 48,807
Available-for-sale securities, Unrealized Loss | (5,506) | (5,163)
States and political subdivisions securities |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than 12 Months, Fair Value | 10,724 | 4,409
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (289) | (109)
Available-for-sale securities, 12 Months or More, Fair Value | 36,633 | 43,528
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (2,197) | (1,929)
Available-for-sale securities, Fair Value | 47,357 | 47,937
Available-for-sale securities, Unrealized Loss | (2,486) | (2,038)
HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 5,590 | 5,660
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (515) | (453)
Held-to-maturity securities, Fair Value | 5,590 | 5,660
Held-to-maturity securities, Unrealized Losses | $ (515) | $ (453)

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