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INVESTMENT SECURITIES - Fair value and unrealized losses on investments (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
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AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than 12 Months, Fair Value | $ 78,788 | $ 118,449
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (2,193) | (2,511)
Available-for-sale securities, 12 Months or More, Fair Value | 390,434 | 405,484
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (47,605) | (58,818)
Available-for-sale securities, Fair Value | 469,222 | 523,933
Available-for-sale securities, Unrealized Loss | (49,798) | (61,329)
HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 163,782 | 162,765
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (19,318) | (24,668)
Held-to-maturity securities, Fair Value | 163,782 | 162,765
Held-to-maturity securities, Unrealized Losses | (19,318) | (24,668)
Agency mortgage-backed securities. |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than 12 Months, Fair Value | 46,897 | 45,977
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (430) | (1,008)
Available-for-sale securities, 12 Months or More, Fair Value | 244,254 | 253,971
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (31,207) | (39,866)
Available-for-sale securities, Fair Value | 291,151 | 299,948
Available-for-sale securities, Unrealized Loss | (31,637) | (40,874)
HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 65,296 | 64,406
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (6,722) | (8,523)
Held-to-maturity securities, Fair Value | 65,296 | 64,406
Held-to-maturity securities, Unrealized Losses | (6,722) | (8,523)
Agency collateralized mortgage obligations |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than 12 Months, Fair Value | 8,922 | 50,720
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (325) | (890)
Available-for-sale securities, 12 Months or More, Fair Value | 63,297 | 62,903
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (6,853) | (8,881)
Available-for-sale securities, Fair Value | 72,219 | 113,623
Available-for-sale securities, Unrealized Loss | (7,178) | (9,771)
HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 93,112 | 92,858
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (11,839) | (15,495)
Held-to-maturity securities, Fair Value | 93,112 | 92,858
Held-to-maturity securities, Unrealized Losses | (11,839) | (15,495)
States and political subdivisions securities |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than 12 Months, Fair Value | 15,820 | 7,229
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (1,425) | (270)
Available-for-sale securities, 12 Months or More, Fair Value | 32,472 | 50,665
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (3,611) | (7,685)
Available-for-sale securities, Fair Value | 48,292 | 57,894
Available-for-sale securities, Unrealized Loss | (5,036) | (7,955)
HELD-TO-MATURITY SECURITIES: |  |
Held-to-maturity securities, 12 Months or Longer, Fair Value | 5,374 | 5,501
Held-to-maturity securities, 12 Months or Longer, Unrealized Losses | (757) | (650)
Held-to-maturity securities, Fair Value | 5,374 | 5,501
Held-to-maturity securities, Unrealized Losses | (757) | (650)
Small Business Administration securities |  |
AVAILABLE-FOR-SALE SECURITIES: |  |
Available-for-sale securities, Less than 12 Months, Fair Value | 7,149 | 14,523
Available-for-sale Securities, Less than 12 Months, Unrealized Loss | (13) | (343)
Available-for-sale securities, 12 Months or More, Fair Value | 50,411 | 37,945
Available-for-sale Securities,12 Months or Longer, Unrealized Loss | (5,934) | (2,386)
Available-for-sale securities, Fair Value | 57,560 | 52,468
Available-for-sale securities, Unrealized Loss | $ (5,947) | $ (2,729)

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