v3.26.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Types of Collateral (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income $ 50,772,584 $ 48,764,162
Real Estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 288,294 351,132
Blanket Lien    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 148,141 135,335
Investment Securities/Cash    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 10,703 8,358
Auto    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 8,739 11,797
Other    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 1,120 2,074
Commercial    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 16,112,685 14,983,861
Commercial | Real Estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 15,059 17,098
Commercial | Blanket Lien    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 147,640 131,107
Commercial | Investment Securities/Cash    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 10,172 6,851
Commercial | Auto    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 2,796 5,411
Commercial | Other    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 977 1,942
Commercial real estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 22,535,229 22,050,007
Commercial real estate | Real Estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 166,521 237,984
Commercial real estate | Blanket Lien    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 12 3,381
Commercial real estate | Investment Securities/Cash    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 285 1,238
Commercial real estate | Auto    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Commercial real estate | Other    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 109 116
BBCC | Real Estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 1,253 1,364
BBCC | Blanket Lien    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 483 832
BBCC | Investment Securities/Cash    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 246 269
BBCC | Auto    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 156 260
BBCC | Other    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Residential real estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 8,760,832 8,467,496
Residential real estate | Real Estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 79,272 73,806
Residential real estate | Blanket Lien    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Residential real estate | Investment Securities/Cash    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Residential real estate | Auto    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Residential real estate | Other    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Indirect    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 1,183,585 1,075,235
Indirect | Real Estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Indirect | Blanket Lien    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Indirect | Investment Securities/Cash    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Indirect | Auto    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 5,552 5,802
Indirect | Other    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Direct    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 597,607 649,297
Direct | Real Estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 4,149 3,676
Direct | Blanket Lien    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 6 15
Direct | Investment Securities/Cash    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Direct | Auto    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 235 324
Direct | Other    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 34 16
Home equity    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 1,582,646 1,538,266
Home equity | Real Estate    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 22,040 17,204
Home equity | Blanket Lien    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Home equity | Investment Securities/Cash    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Home equity | Auto    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income 0 0
Home equity | Other    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Total loans, net of unearned income $ 0 $ 0