Allowance for Credit Losses - Change in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Allowance balance attributable to loans:
Beginning balance	$ 40,157	$ 39,156
Provision charged to operations	3,172	575
Loans charged off	(7,418)	(4,565)
Recoveries of loans previously charged off	4,607	4,991
Ending balance	40,518	40,157
Residential mortgage
Allowance balance attributable to loans:
Beginning balance	2,660	2,914
Provision charged to operations	(54)	(279)
Loans charged off	(2)
Recoveries of loans previously charged off	18	25
Ending balance	2,622	2,660
Real Estate Construction
Allowance balance attributable to loans:
Beginning balance	856	975
Provision charged to operations	(68)	(119)
Ending balance	788	856
Commercial, Financial & Agricultural
Allowance balance attributable to loans:
Beginning balance	11,085	10,696
Provision charged to operations	(534)	385
Loans charged off	(140)
Recoveries of loans previously charged off	20	4
Ending balance	10,431	11,085
Equity lines
Allowance balance attributable to loans:
Beginning balance	593	687
Provision charged to operations	(98)	(95)
Recoveries of loans previously charged off	2	1
Ending balance	497	593
Consumer
Allowance balance attributable to loans:
Beginning balance	172	371
Provision charged to operations	186	(137)
Loans charged off	(260)	(184)
Recoveries of loans previously charged off	113	122
Ending balance	211	172
Consumer finance
Allowance balance attributable to loans:
Beginning balance	24,791	23,513
Provision charged to operations	3,740	820
Loans charged off	(7,016)	(4,381)
Recoveries of loans previously charged off	4,454	4,839
Ending balance	$ 25,969	$ 24,791