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INVESTMENT SECURITIES - Schedule of Investment Securities in a Continuous Unrealized Loss Position (Details) $ in Thousands | Dec. 31, 2024 USD ($) security | Dec. 31, 2023 USD ($) security
--- | --- | ---
Fair Value |  |
Less than 12 Months | $ 123,122 | $ 67,007
12 Months or Longer | 1,230,622 | 1,493,547
Total | 1,353,744 | 1,560,554
Gross Unrealized Losses |  |
Less than 12 Months | 3,775 | 1,101
12 Months or Longer | 235,078 | 219,453
Total | $ 238,853 | $ 220,554
Number of Securities | security | 760 | 865
U.S. Government-sponsored agency securities |  |
Fair Value |  |
Less than 12 Months | $ 0 | $ 0
12 Months or Longer | 79,381 | 95,307
Total | 79,381 | 95,307
Gross Unrealized Losses |  |
Less than 12 Months | 0 | 0
12 Months or Longer | 16,081 | 16,214
Total | $ 16,081 | $ 16,214
Number of Securities | security | 12 | 14
State and municipal |  |
Fair Value |  |
Less than 12 Months | $ 40,398 | $ 55,514
12 Months or Longer | 820,663 | 963,584
Total | 861,061 | 1,019,098
Gross Unrealized Losses |  |
Less than 12 Months | 2,115 | 1,076
12 Months or Longer | 131,271 | 115,146
Total | $ 133,386 | $ 116,222
Number of Securities | security | 611 | 691
U.S. Government-sponsored mortgage-backed securities |  |
Fair Value |  |
Less than 12 Months | $ 82,724 | $ 11,493
12 Months or Longer | 318,310 | 422,868
Total | 401,034 | 434,361
Gross Unrealized Losses |  |
Less than 12 Months | 1,660 | 25
12 Months or Longer | 87,064 | 86,965
Total | $ 88,724 | $ 86,990
Number of Securities | security | 127 | 150
Corporate obligations |  |
Fair Value |  |
Less than 12 Months | $ 0 | $ 0
12 Months or Longer | 12,268 | 11,788
Total | 12,268 | 11,788
Gross Unrealized Losses |  |
Less than 12 Months | 0 | 0
12 Months or Longer | 662 | 1,128
Total | $ 662 | $ 1,128
Number of Securities | security | 10 | 10

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