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COMMITMENTS AND CONTINGENCIES (Schedule of Securities Pledged as Collateral) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
AFS Securities | $ 2,608,182 | $ 2,231,261
HTM securities | 776,827 | 808,074
Loans | 18,176,614 | 15,502,861
Total assets | 24,803,723 | 21,166,197
Asset Pledged as Collateral [Member] |  |
Cash | 118,729 | 154,382
AFS Securities | 1,588,105 | 1,460,754
HTM securities | 626,940 | 638,850
Loans | 9,692,289 | 3,379,394
Total assets | 12,026,063 | 5,633,380
Deposits [Member] | Asset Pledged as Collateral [Member] |  |
Cash | 0 | 0
AFS Securities | 807,268 | 749,398
HTM securities | 617,043 | 621,494
Loans | 0 | 0
Total assets | 1,424,311 | 1,370,892
Repurchase Agreements [Member] | Asset Pledged as Collateral [Member] |  |
Cash | 0 | 0
AFS Securities | 84,094 | 174,075
HTM securities | 0 | 0
Loans | 0 | 0
Total assets | 84,094 | 174,075
Federal Home Loan Bank Advances [Member] | Asset Pledged as Collateral [Member] |  |
Cash | 0 | 0
AFS Securities | 622,906 | 48,718
HTM securities | 9,897 | 0
Loans | 4,213,624 | 2,960,926
Total assets | 4,846,427 | 3,009,644
Derivative [Member] | Asset Pledged as Collateral [Member] |  |
Cash | 118,729 | 154,382
AFS Securities | 62,683 | 61,311
HTM securities | 0 | 0
Loans | 0 | 0
Total assets | 181,412 | 215,693
Federal Reserve Discount Window | Asset Pledged as Collateral [Member] |  |
Cash | 0 | 0
AFS Securities | 0 | 411,661
HTM securities | 0 | 17,356
Loans | 5,478,665 | 418,468
Total assets | 5,478,665 | 847,485
Other purposes | Asset Pledged as Collateral [Member] |  |
Cash | 0 | 0
AFS Securities | 11,154 | 15,591
HTM securities | 0 | 0
Loans | 0 | 0
Total assets | $ 11,154 | $ 15,591

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