Annual report [Section 13 and 15(d), not S-K Item 405]

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
Dec. 31, 2025
Dec. 31, 2024
Financial Instruments Owned and Pledged as Collateral [Line Items]    
AFS Securities $ 4,194,301 $ 2,442,166
HTM securities 856,812 759,335
Loans 27,501,059 18,291,977
Total assets 37,585,754 24,585,323
Asset Pledged as Collateral [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 120,697 134,668
AFS Securities 2,100,229 1,526,012
HTM securities 616,547 610,838
Loans 12,196,030 8,447,750
Total assets 15,033,503 10,719,268
Deposits [Member] | Asset Pledged as Collateral [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 0 0
AFS Securities 1,249,969 771,486
HTM securities 607,061 601,421
Loans 0 0
Total assets 1,857,030 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 203,404 93,667
HTM securities 0 0
Loans 0 0
Total assets 203,404 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 518,895 579,947
HTM securities 9,486 9,417
Loans 8,832,269 4,089,049
Total assets 9,360,650 4,678,413
Derivative [Member] | Asset Pledged as Collateral [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 120,697 134,668
AFS Securities 64,037 62,199
HTM securities 0 0
Loans 0 0
Total assets 184,734 196,867
Fed Funds | 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 3,363,761 4,358,701
Total assets 3,363,761 4,358,701
Other purposes | Asset Pledged as Collateral [Member]    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 0 0
AFS Securities 63,924 18,713
HTM securities 0 0
Loans 0 0
Total assets $ 63,924 $ 18,713