Loans and Asset Quality Information - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
PPP loans	$ 39,000,000	$ 240,500,000
Unamortized net deferred loan fees	1,704,000	3,698,000	$ 1,941,000
Loans	6,081,715,000	4,731,315,000	4,453,466,000
Loans pledged as collateral	4,300,000,000	4,000,000,000
Unamortized discount on acquired loans	17,200,000
Payments that exceeded carrying amount of PCI loans		500,000	400,000
Loan discount accretion income		400,000	300,000
Recovery		14,000
Additional loan interest income		100,000	100,000
Interest income on nonaccrual loans	0
Net book balance of individually evaluated loans on nonaccrual, threshold amount for designation as collateral dependent loans	350,000
Interest income on restructured loans		1,100,000	1,300,000
Loans	6,083,419,000	4,735,013,000	4,451,525,000
Allowance for credit losses on loans	78,789,000	52,388,000	21,398,000	$ 21,039,000
ACL for securities HTM	0
Commercial, financial, and agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	648,997,000	782,549,000	504,271,000
Allowance for credit losses on loans	16,249,000	11,316,000	4,553,000	2,889,000
Consumer loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	57,238,000	53,955,000	56,172,000
Allowance for credit losses on loans	2,656,000	1,478,000	$ 972,000	$ 952,000
Special Mention Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	43,100,000	61,260,000
Special Mention Loans | Consumer loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	4,000
Classified
Loans and Leases Receivable Disclosure [Line Items]
Loans	56,000,000
Classified | Consumer loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 148,000
Real Estate
Loans and Leases Receivable Disclosure [Line Items]
Threshold percentage to write-off nonaccrual loans	90.00%
Real Estate | Receivable Benchmark | Collateral Type Concentration Risk
Loans and Leases Receivable Disclosure [Line Items]
Concentration risk percentage	88.00%
Hotel | Minimum
Loans and Leases Receivable Disclosure [Line Items]
Threshold percentage to write-off nonaccrual loans	10.00%
Hotel | Maximum
Loans and Leases Receivable Disclosure [Line Items]
Threshold percentage to write-off nonaccrual loans	25.00%
Non Real Estate
Loans and Leases Receivable Disclosure [Line Items]
Threshold percentage to write-off nonaccrual loans	75.00%
Officers and Directors
Loans and Leases Receivable Disclosure [Line Items]
Due from related parties	$ 600,000	3,400,000
Repayments received from related parties	2,800,000
Credit Card Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 37,900,000	33,200,000
Credit Card Loans | Receivable Benchmark | Receivable Type Concentration Risk | Commercial, financial, and agricultural
Loans and Leases Receivable Disclosure [Line Items]
Concentration risk percentage	51.00%
Credit Card Loans | Receivable Benchmark | Receivable Type Concentration Risk | Consumer loans
Loans and Leases Receivable Disclosure [Line Items]
Concentration risk percentage	49.00%
PCI Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans		8,591,000
PCI Loans | Special Mention Loans
Loans and Leases Receivable Disclosure [Line Items]
Loans		85,000
PCI Loans | Purchased Credit Impaired Loans
Loans and Leases Receivable Disclosure [Line Items]
Carrying value of PCI loans		8,600,000
Residential Mortgage Loans
Loans and Leases Receivable Disclosure [Line Items]
Presold mortgages in process of settlement	$ 1,500,000	1,900,000
Unfunded Loan Commitment
Loans and Leases Receivable Disclosure [Line Items]
Allowance for credit losses on loans	13,506,000	582,000
SBA PPP loans
Loans and Leases Receivable Disclosure [Line Items]
Unamortized net deferred loan fees	2,600,000	6,000,000
SBA Loans
Loans and Leases Receivable Disclosure [Line Items]
Remaining unaccreted discount	$ 6,000,000	7,300,000
Purchased Non-Impaired Loans
Loans and Leases Receivable Disclosure [Line Items]
Remaining unaccreted discount		$ 7,900,000