Quarterly report [Sections 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
Sep. 30, 2025
Dec. 31, 2024
Financial Instruments Owned and Pledged as Collateral [Line Items]    
AFS Securities $ 4,267,523 $ 2,442,166
HTM securities 848,099 759,335
Loans 27,068,138 18,291,977
Total assets 37,072,733 24,585,323
Asset Pledged as Collateral [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 110,671 134,668
AFS Securities 2,067,470 1,526,012
HTM securities 612,439 610,838
Loans 13,090,641 8,447,750
Total assets 15,881,221 10,719,268
Deposits [Member] | Asset Pledged as Collateral [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 0 0
AFS Securities 1,268,275 771,486
HTM securities 602,964 601,421
Loans 0 0
Total assets 1,871,239 1,372,907
Repurchase Agreements [Member] | Asset Pledged as Collateral [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 0 0
AFS Securities 149,055 93,667
HTM securities 0 0
Loans 0 0
Total assets 149,055 93,667
Federal Home Loan Bank Advances [Member] | Asset Pledged as Collateral [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 0 0
AFS Securities 541,998 579,947
HTM securities 9,475 9,417
Loans 8,392,429 4,089,049
Total assets 8,943,902 4,678,413
Derivative [Member] | Asset Pledged as Collateral [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 110,671 134,668
AFS Securities 64,058 62,199
HTM securities 0 0
Loans 0 0
Total assets 174,729 196,867
Federal Reserve Discount Window | Asset Pledged as Collateral [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 0 0
AFS Securities 0 0
HTM securities 0 0
Loans 4,698,212 4,358,701
Total assets 4,698,212 4,358,701
Other purposes | Asset Pledged as Collateral [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 0 0
AFS Securities 44,084 18,713
HTM securities 0 0
Loans 0 0
Total assets $ 44,084 $ 18,713