Loans and Leases - Summary of Major Loan and Lease Categories (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, net of deferred income	$ 6,684,837	$ 6,567,214	$ 6,462,238
Less: Allowance for credit losses, loans and leases	(85,745)	(85,387)
Net loans and leases held for investment	6,599,092	6,481,827
Unearned lease income	32,145	30,485
Net deferred costs, included in the above table	7,803	7,949
Overdraft deposits included in the above table	137	280
Commercial, financial and agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, net of deferred income	1,055,332	989,723	1,039,265
Real estate-commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, net of deferred income	3,373,889	3,302,798	3,221,993
Real estate-construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, net of deferred income	313,229	394,462	413,404
Real estate-residential secured for business purpose
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, net of deferred income	532,628	517,002	517,521
Real estate-residential secured for personal purpose
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, net of deferred income	952,665	909,015	832,632
Real estate-home equity secured for personal purpose
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, net of deferred income	179,150	179,282	175,090
Loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, net of deferred income	26,430	27,749	25,544
Lease financings
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable, net of deferred income	$ 251,514	$ 247,183	$ 236,789