Loans, Allowance for Credit Losses, and Asset Quality Information - Schedule of Activity in Allowance for Loan Losses for Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 82,069	$ 65,849	$ 78,789	$ 52,388	$ 52,388
Allowance for acquired PCD loans					4,895
Charge-offs	(1,760)	(2,131)	(2,803)	(4,448)	(7,602)
Recoveries	1,872	1,304	2,695	2,507	4,922
Provisions/(Reversals)	0	0	3,500	0	9,611
Ending balance	82,181	65,022	82,181	65,022	78,789
Cumulative Effect, Period Of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				14,575	14,575
Commercial, financial, and agricultural
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	16,013	13,606	16,249	11,316	11,316
Allowance for acquired PCD loans					2,917
Charge-offs	(728)	(550)	(1,518)	(1,988)	(3,722)
Recoveries	223	153	470	667	1,744
Provisions/(Reversals)	(58)	1,600	249	1,747	927
Ending balance	15,450	14,809	15,450	14,809	16,249
Commercial, financial, and agricultural | Cumulative Effect, Period Of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				3,067	3,067
Real estate, commercial | Real estate – construction, land development & other land loans
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	16,057	10,134	16,519	5,355	5,355
Allowance for acquired PCD loans					165
Charge-offs	0	0	0	(66)	(245)
Recoveries	130	392	267	686	948
Provisions/(Reversals)	(16)	(422)	(615)	(2,011)	4,156
Ending balance	16,171	10,104	16,171	10,104	16,519
Real estate, commercial | Real estate – construction, land development & other land loans | Cumulative Effect, Period Of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				6,140	6,140
Real estate, commercial | Real estate – mortgage – commercial and other
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	37,327	26,507	30,342	23,603	23,603
Allowance for acquired PCD loans					1,489
Charge-offs	(818)	(1,324)	(863)	(1,834)	(2,295)
Recoveries	1,300	78	1,455	340	533
Provisions/(Reversals)	(615)	97	6,260	3,506	7,269
Ending balance	37,194	25,358	37,194	25,358	30,342
Real estate, commercial | Real estate – mortgage – commercial and other | Cumulative Effect, Period Of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(257)	(257)
Real estate, mortgage | Real estate – mortgage – residential (1-4 family) first mortgages
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	8,159	8,996	8,686	8,048	8,048
Allowance for acquired PCD loans					222
Charge-offs	0	(76)	0	(114)	(273)
Recoveries	11	236	15	323	761
Provisions/(Reversals)	480	(505)	(51)	(2,190)	(2,656)
Ending balance	8,650	8,651	8,650	8,651	8,686
Real estate, mortgage | Real estate – mortgage – residential (1-4 family) first mortgages | Cumulative Effect, Period Of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				2,584	2,584
Real estate, mortgage | Real estate – mortgage – home equity loans / lines of credit
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2,074	4,309	4,337	2,375	2,375
Allowance for acquired PCD loans					92
Charge-offs	0	(8)	(41)	(139)	(400)
Recoveries	128	218	361	229	578
Provisions/(Reversals)	(116)	(782)	(2,571)	(1,308)	(888)
Ending balance	2,086	3,737	2,086	3,737	4,337
Real estate, mortgage | Real estate – mortgage – home equity loans / lines of credit | Cumulative Effect, Period Of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				2,580	2,580
Consumer loans
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2,439	2,297	2,656	1,478	1,478
Allowance for acquired PCD loans					10
Charge-offs	(214)	(173)	(381)	(307)	(667)
Recoveries	80	227	127	262	358
Provisions/(Reversals)	325	12	228	256	803
Ending balance	2,630	2,363	2,630	2,363	2,656
Consumer loans | Cumulative Effect, Period Of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				674	674
Unallocated
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	0	0	0	213	213
Allowance for acquired PCD loans					0
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Provisions/(Reversals)	0	0	0	0	0
Ending balance	$ 0	$ 0	$ 0	0	0
Unallocated | Cumulative Effect, Period Of Adoption, Adjustment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				$ (213)	$ (213)