For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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Amount of unamortized loan commitment, origination, and other costs (fees) and purchase premium (discount) on financing receivable recognized as adjustment to yield. Excludes financing receivable covered under loss sharing agreement.

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Loans, Allowance for Credit Losses, and Asset Quality Information - Summary of Major Categories of Total Loans Outstanding (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 6,666,548	$ 6,083,419	$ 4,735,013
Unamortized net deferred loan fees	(1,403)	(1,704)	3,698
Total loans	$ 6,665,145	$ 6,081,715	4,731,315
Financing Receivable \| Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	100.00%	100.00%
Total SBA loans included in the table above
Loans and Leases Receivable Disclosure [Line Items]
Total loans	$ 148,803	$ 171,149
Guaranteed portions of SBA Loans included in table above
Loans and Leases Receivable Disclosure [Line Items]
Total loans	31,893	48,377
Unguaranteed portions of SBA Loans included in table above
Loans and Leases Receivable Disclosure [Line Items]
Total loans	116,910	122,772
Sold portions of SBA loans with servicing retained - not included in table above
Loans and Leases Receivable Disclosure [Line Items]
Total loans	392,370	414,240
Commercial, financial, and agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 641,941	$ 648,997	782,549
Commercial, financial, and agricultural \| Financing Receivable \| Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	9.00%	11.00%
Real estate, commercial \| Real estate – construction, land development & other land loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 934,176	$ 828,549	570,672
Real estate, commercial \| Real estate – construction, land development & other land loans \| Financing Receivable \| Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	14.00%	13.00%
Real estate, commercial \| Real estate mortgage – commercial and other
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 3,510,261	$ 3,194,737	2,049,203
Real estate, commercial \| Real estate mortgage – commercial and other \| Financing Receivable \| Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	53.00%	53.00%
Real estate, mortgage \| Real estate mortgage – residential (1-4 family) first mortgages
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 1,195,785	$ 1,021,966	972,378
Real estate, mortgage \| Real estate mortgage – residential (1-4 family) first mortgages \| Financing Receivable \| Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	18.00%	17.00%
Real estate, mortgage \| Real estate mortgage – home equity loans/lines of credit
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 323,726	$ 331,932	306,256
Real estate, mortgage \| Real estate mortgage – home equity loans/lines of credit \| Financing Receivable \| Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	5.00%	5.00%
Consumer loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 60,659	$ 57,238	$ 53,955
Consumer loans \| Financing Receivable \| Loan Category Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Percentage	1.00%	1.00%