Loans and Allowance for Credit Losses - Impairment Methodology (Details) - USD ($) $ in Thousands	Jun. 30, 2023		Mar. 31, 2023	Dec. 31, 2022		Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Allowance for loan losses:
Individually evaluated for impairment				$ 258
Collectively evaluated for impairment				15,330
Total	$ 22,236	[1]	$ 21,979	15,588	[1]	$ 15,353	$ 14,279	$ 16,903
Loans outstanding:
Individually evaluated for impairment				20,361
Collectively evaluated for impairment				1,500,891
Total	1,563,206			1,521,252
Commercial, Financial, and Agricultural
Allowance for loan losses:
Individually evaluated for impairment				36
Collectively evaluated for impairment				2,699
Total	1,844		1,921	2,735		3,005	2,830	2,717
Loans outstanding:
Individually evaluated for impairment				295
Collectively evaluated for impairment				244,254
Total	233,029			244,549
Real Estate Construction - Residential
Allowance for loan losses:
Individually evaluated for impairment				0
Collectively evaluated for impairment				157
Total	748		631	157		66	60	137
Loans outstanding:
Individually evaluated for impairment				0
Collectively evaluated for impairment				32,095
Total	51,884			32,095
Real Estate Construction - Commercial
Allowance for loan losses:
Individually evaluated for impairment				11
Collectively evaluated for impairment				864
Total	3,422		4,464	875		762	664	588
Loans outstanding:
Individually evaluated for impairment				87
Collectively evaluated for impairment				137,148
Total	127,761			137,235
Real Estate Mortgage - Residential
Allowance for loan losses:
Individually evaluated for impairment				148
Collectively evaluated for impairment				3,181
Total	5,465		5,262	3,329		2,747	2,578	2,482
Loans outstanding:
Individually evaluated for impairment				1,863
Collectively evaluated for impairment				359,162
Total	383,439			361,025
Real Estate Mortgage - Commercial
Allowance for loan losses:
Individually evaluated for impairment				62
Collectively evaluated for impairment				7,938
Total	10,295		9,487	8,000		8,410	7,692	10,662
Loans outstanding:
Individually evaluated for impairment				18,110
Collectively evaluated for impairment				704,619
Total	744,771			722,729
Installment and Other Consumer
Allowance for loan losses:
Individually evaluated for impairment				1
Collectively evaluated for impairment				325
Total	217		222	326		312	273	256
Loans outstanding:
Individually evaluated for impairment				6
Collectively evaluated for impairment				23,613
Total	22,322			23,619
Un- allocated
Allowance for loan losses:
Individually evaluated for impairment				0
Collectively evaluated for impairment				166
Total	$ 245		$ (8)	166		$ 51	$ 182	$ 61
Loans outstanding:
Individually evaluated for impairment				0
Collectively evaluated for impairment				0
Total				$ 0

[1] amounts include the impacts of the January 1, 2023 adoption of ASU 2016-13. See Note 2 for details.See accompanying notes to the consolidated financial statements (unaudited)