Loans, Allowance for Credit Losses, and Asset Quality Information - Schedule of Analysis of Payment Status of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Loans	$ 6,665,145	$ 6,081,715	$ 4,731,315
Nonaccrual loans	28,514	34,696
Unamortized net deferred loan fees	(1,403)	(1,704)	3,698
Total loans	6,666,548	6,083,419	4,735,013
Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,417	11,763
Accruing 60- 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,811	3,263
Accruing 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	1,004
Accruing Current
Financing Receivable, Past Due [Line Items]
Loans	6,629,806	6,032,693
Commercial, financial, and agricultural
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	10,229	12,152
Total loans	641,941	648,997	782,549
Commercial, financial, and agricultural | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	438	377
Commercial, financial, and agricultural | Accruing 60- 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	565	93
Commercial, financial, and agricultural | Accruing 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial, financial, and agricultural | Accruing Current
Financing Receivable, Past Due [Line Items]
Loans	630,709	636,375
Commercial, financial, and agricultural | Loans, Excluding Purchased Credit Impaired Loans
Financing Receivable, Past Due [Line Items]
Total loans	641,941	648,997
Real estate, commercial | Real estate – construction, land development & other land loans
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	1,009	632
Total loans	934,176	828,549	570,672
Real estate, commercial | Real estate – construction, land development & other land loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	238	4,046
Real estate, commercial | Real estate – construction, land development & other land loans | Accruing 60- 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,687	0
Real estate, commercial | Real estate – construction, land development & other land loans | Accruing 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	286
Real estate, commercial | Real estate – construction, land development & other land loans | Accruing Current
Financing Receivable, Past Due [Line Items]
Loans	931,242	823,585
Real estate, commercial | Real estate – construction, land development & other land loans | Loans, Excluding Purchased Credit Impaired Loans
Financing Receivable, Past Due [Line Items]
Total loans	934,176	828,549
Real estate, commercial | Real estate mortgage – commercial and other
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	12,505	16,231
Total loans	3,510,261	3,194,737	2,049,203
Real estate, commercial | Real estate mortgage – commercial and other | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	620	164
Real estate, commercial | Real estate mortgage – commercial and other | Accruing 60- 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	97	1,496
Real estate, commercial | Real estate mortgage – commercial and other | Accruing 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Real estate, commercial | Real estate mortgage – commercial and other | Accruing Current
Financing Receivable, Past Due [Line Items]
Loans	3,497,039	3,176,846
Real estate, commercial | Real estate mortgage – commercial and other | Loans, Excluding Purchased Credit Impaired Loans
Financing Receivable, Past Due [Line Items]
Total loans	3,510,261	3,194,737
Real estate, mortgage | Real estate mortgage – residential (1-4 family) first mortgages
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	3,289	4,898
Total loans	1,195,785	1,021,966	972,378
Real estate, mortgage | Real estate mortgage – residential (1-4 family) first mortgages | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,415	6,571
Real estate, mortgage | Real estate mortgage – residential (1-4 family) first mortgages | Accruing 60- 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	25	1,488
Real estate, mortgage | Real estate mortgage – residential (1-4 family) first mortgages | Accruing 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Real estate, mortgage | Real estate mortgage – residential (1-4 family) first mortgages | Accruing Current
Financing Receivable, Past Due [Line Items]
Loans	1,189,056	1,009,009
Real estate, mortgage | Real estate mortgage – residential (1-4 family) first mortgages | Loans, Excluding Purchased Credit Impaired Loans
Financing Receivable, Past Due [Line Items]
Total loans	1,195,785	1,021,966
Real estate, mortgage | Real estate mortgage – home equity loans/lines of credit
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	1,397	694
Total loans	323,726	331,932	306,256
Real estate, mortgage | Real estate mortgage – home equity loans/lines of credit | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	457	489
Real estate, mortgage | Real estate mortgage – home equity loans/lines of credit | Accruing 60- 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	371	124
Real estate, mortgage | Real estate mortgage – home equity loans/lines of credit | Accruing 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	718
Real estate, mortgage | Real estate mortgage – home equity loans/lines of credit | Accruing Current
Financing Receivable, Past Due [Line Items]
Loans	321,501	329,907
Real estate, mortgage | Real estate mortgage – home equity loans/lines of credit | Loans, Excluding Purchased Credit Impaired Loans
Financing Receivable, Past Due [Line Items]
Total loans	323,726	331,932
Consumer loans
Financing Receivable, Past Due [Line Items]
Nonaccrual loans	85	89
Total loans	60,659	57,238	$ 53,955
Consumer loans | Accruing 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	249	116
Consumer loans | Accruing 60- 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	66	62
Consumer loans | Accruing 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Consumer loans | Accruing Current
Financing Receivable, Past Due [Line Items]
Loans	60,259	56,971
Consumer loans | Loans, Excluding Purchased Credit Impaired Loans
Financing Receivable, Past Due [Line Items]
Total loans	$ 60,659	$ 57,238