Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES (Schedule of Securities Pledged as Collateral) (Details)

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COMMITMENTS AND CONTINGENCIES (Schedule of Securities Pledged as Collateral) (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
AFS Securities $ 2,182,448 $ 2,741,816
HTM securities 807,798 801,887
Loans 14,946,247 14,338,374
Total assets 20,602,332 20,461,138
Asset Pledged as Collateral [Member]    
Cash 187,873 196,180
AFS Securities 1,482,470 993,446
HTM securities 631,965 580,415
Loans 3,614,245 3,137,996
Total assets 5,916,553 4,908,037
Public deposits | Asset Pledged as Collateral [Member]    
Cash 0 0
AFS Securities 749,791 713,761
HTM securities 614,269 579,550
Loans 0 0
Total assets 1,364,060 1,293,311
Repurchase agreements | Asset Pledged as Collateral [Member]    
Cash 0 0
AFS Securities 174,364 159,221
HTM securities 0 0
Loans 0 0
Total assets 174,364 159,221
FHLB advances | Asset Pledged as Collateral [Member]    
Cash 0 0
AFS Securities 55,309 36,039
HTM securities 0 0
Loans 3,181,541 2,679,316
Total assets 3,236,850 2,715,355
Derivatives | Asset Pledged as Collateral [Member]    
Cash 187,873 196,180
AFS Securities 57,345 57,114
HTM securities 0 0
Loans 0 0
Total assets 245,218 253,294
Fed Funds | Asset Pledged as Collateral [Member]    
Cash 0 0
AFS Securities 423,257 0
HTM securities 17,696 0
Loans 432,704 458,680
Total assets 873,657 458,680
Other purposes | Asset Pledged as Collateral [Member]    
Cash 0 0
AFS Securities 22,404 27,311
HTM securities 0 865
Loans 0 0
Total assets $ 22,404 $ 28,176