Loans and Allowance for Credit Losses - Schedule of Types of Collateral (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	$ 32,991,927	$ 31,123,641
Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	226,996	168,623
Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	25,524	43,245
Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	3,747	4,408
Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	5,243	5,085
Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	6,464	7,414
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	9,512,230	9,508,904
Commercial | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	14,303	8,962
Commercial | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	24,729	42,754
Commercial | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	2,577	2,690
Commercial | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	280	1,611
Commercial | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	328	980
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	14,140,629	12,457,070
Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	146,425	108,871
Commercial real estate | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
Commercial real estate | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1,167	1,718
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	6,107	6,411
BBCC | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	3,522	1,939
BBCC | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	794	478
BBCC | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	0	0
BBCC | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	390	12
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	6,699,443	6,460,441
Residential real estate | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	41,771	34,660
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	1,050,982	1,034,257
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	4,207	3,230
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	523,172	629,186
Direct | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	4,727	2,991
Direct | Blanket Lien
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1	13
Direct | Investment Securities/Cash
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	3	0
Direct | Auto
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	366	232
Direct | Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	29	23
Home equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	1,065,471	1,033,783
Home equity | Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans, net of unearned income	16,248	11,200
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