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COMMITMENTS AND CONTINGENCIES (Schedule of Securities Pledged as Collateral) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
AFS Securities | $ 2,231,261 | $ 2,741,816
HTM securities | 808,074 | 801,887
Loans | 15,502,861 | 14,338,374
Total assets | 21,166,197 | 20,461,138
Asset Pledged as Collateral [Member] |  |
Cash | 154,382 | 196,180
AFS Securities | 1,460,754 | 993,446
HTM securities | 638,850 | 580,415
Loans | 3,379,394 | 3,137,996
Total assets | 5,633,380 | 4,908,037
Public deposits | Asset Pledged as Collateral [Member] |  |
Cash | 0 | 0
AFS Securities | 749,398 | 713,761
HTM securities | 621,494 | 579,550
Loans | 0 | 0
Total assets | 1,370,892 | 1,293,311
Repurchase agreements | Asset Pledged as Collateral [Member] |  |
Cash | 0 | 0
AFS Securities | 174,075 | 159,221
HTM securities | 0 | 0
Loans | 0 | 0
Total assets | 174,075 | 159,221
FHLB advances | Asset Pledged as Collateral [Member] |  |
Cash | 0 | 0
AFS Securities | 48,718 | 36,039
HTM securities | 0 | 0
Loans | 2,960,926 | 2,679,316
Total assets | 3,009,644 | 2,715,355
Derivatives | Asset Pledged as Collateral [Member] |  |
Cash | 154,382 | 196,180
AFS Securities | 61,311 | 57,114
HTM securities | 0 | 0
Loans | 0 | 0
Total assets | 215,693 | 253,294
Fed Funds | Asset Pledged as Collateral [Member] |  |
Cash | 0 | 0
AFS Securities | 411,661 | 0
HTM securities | 17,356 | 0
Loans | 418,468 | 458,680
Total assets | 847,485 | 458,680
Other purposes | Asset Pledged as Collateral [Member] |  |
Cash | 0 | 0
AFS Securities | 15,591 | 27,311
HTM securities | 0 | 865
Loans | 0 | 0
Total assets | $ 15,591 | $ 28,176

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