Loans and Allowance for Loan Losses - Allowance for Loan Losses (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	Dec. 31, 2020
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 14,279	$ 18,361	$ 16,903	$ 18,113	$ 18,113
Additions:
Provision for (release of) loan losses	1,200	400	(1,300)	400
Deductions:
Loans charged off	188	81	354	188
Less recoveries on loans	(62)	(55)	(104)	(410)
Net loan charge-offs (recoveries)	126	26	250	(222)
Balance at end of period	15,353	18,735	$ 15,353	18,735	16,903	$ 18,113
Amount of PPP loans funded during the period					47,500	88,400
Percentage credit guarantee from the SBA for the PPP loans			100.00%
Allowance for PPP loans	0		$ 0
SBA PPP loans, net	1,100		$ 1,100
Paycheck protection program interest rate			1.00%
Commercial, Financial, & Agricultural
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	2,830	4,676	$ 2,717	5,121	5,121
Additions:
Provision for (release of) loan losses	184	655	312	87
Deductions:
Loans charged off	25	28	60	55
Less recoveries on loans	(16)	(33)	(36)	(183)
Net loan charge-offs (recoveries)	9	(5)	24	(128)
Balance at end of period	3,005	5,336	3,005	5,336	2,717	5,121
SBA PPP loans, net	1,100		1,100
Real Estate Construction - Residential & Real Estate Mortgage - Residential
Deductions:
SBA PPP loans, net					8,400
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Construction
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	60	309	137	213	213
Additions:
Provision for (release of) loan losses	6	(58)	(71)	25
Deductions:
Loans charged off	0	0	0	0
Less recoveries on loans	0	0	0	(13)
Net loan charge-offs (recoveries)	0	0	0	(13)
Balance at end of period	66	251	66	251	137	213
Real Estate Construction - Residential & Real Estate Mortgage - Residential | Mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	2,578	2,594	2,482	2,679	2,679
Additions:
Provision for (release of) loan losses	149	(130)	242	(384)
Deductions:
Loans charged off	0	4	0	3
Less recoveries on loans	(20)	(7)	(23)	(175)
Net loan charge-offs (recoveries)	(20)	(3)	(23)	(172)
Balance at end of period	2,747	2,467	2,747	2,467	2,482	2,679
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Construction
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	664	532	588	475	475
Additions:
Provision for (release of) loan losses	98	(37)	174	20
Deductions:
Loans charged off	0	0	0	0
Less recoveries on loans	0	0	0	0
Net loan charge-offs (recoveries)	0	0	0	0
Balance at end of period	762	495	762	495	588	475
Real Estate Construction - Commercial & Real Estate Mortgage - Commercial | Mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	7,692	9,904	10,662	9,354	9,354
Additions:
Provision for (release of) loan losses	821	14	(2,077)	587
Deductions:
Loans charged off	104	3	178	26
Less recoveries on loans	(1)	0	(3)	0
Net loan charge-offs (recoveries)	103	3	175	26
Balance at end of period	8,410	9,915	8,410	9,915	10,662	9,354
Installment and Other Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	273	245	256	264	264
Additions:
Provision for (release of) loan losses	73	38	130	53
Deductions:
Loans charged off	59	46	116	104
Less recoveries on loans	(25)	(15)	(42)	(39)
Net loan charge-offs (recoveries)	34	31	74	65
Balance at end of period	312	252	312	252	256	264
Un- allocated
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	182	101	61	7	7
Additions:
Provision for (release of) loan losses	(131)	(82)	(10)	12
Deductions:
Loans charged off	0	0	0	0
Less recoveries on loans	0	0	0	0
Net loan charge-offs (recoveries)	0	0	0	0
Balance at end of period	$ 51	$ 19	$ 51	$ 19	$ 61	$ 7