Loans and Allowance for Credit Losses - Schedule of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Allowance for Credit Losses on Loans
Balance at beginning of period	$ 21,570	$ 21,980	$ 22,044	$ 23,744	$ 23,744
Charge-offs	114	679	397	2,810	2,991
Recoveries	73	43	323	128
Provision for (release of) credit losses	375	593	(66)	875
Balance at end of period	21,904	21,937	21,904	21,937	22,044
Unfunded Loan Commitment
Allowance for Credit Losses on Loans
Balance at beginning of period			900
Balance at end of period	1,000		1,000		900
Commercial, Financial, & Agricultural
Allowance for Credit Losses on Loans
Balance at beginning of period	2,144	1,621	1,560	3,208	3,208
Charge-offs	5	270	39	2,158	2,238
Recoveries	30	16	132	36
Provision for (release of) credit losses	252	263	768	544
Balance at end of period	2,421	1,630	2,421	1,630	1,560
Real Estate Construction - Residential
Allowance for Credit Losses on Loans
Balance at beginning of period	328	598	578	1,043	1,043
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Provision for (release of) credit losses	93	(12)	(157)	(457)
Balance at end of period	421	586	421	586	578
Real Estate Construction - Commercial
Allowance for Credit Losses on Loans
Balance at beginning of period	1,484	1,477	2,221	3,273	3,273
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0
Provision for (release of) credit losses	18	347	(719)	(1,449)
Balance at end of period	1,502	1,824	1,502	1,824	2,221
Real Estate Mortgage - Residential
Allowance for Credit Losses on Loans
Balance at beginning of period	4,917	5,213	5,310	5,264	5,264
Charge-offs	1	0	15	23	51
Recoveries	14	7	33	12
Provision for (release of) credit losses	186	62	(212)	29
Balance at end of period	5,116	5,282	5,116	5,282	5,310
Real Estate Mortgage - Commercial
Allowance for Credit Losses on Loans
Balance at beginning of period	12,392	12,908	12,305	10,537	10,537
Charge-offs	4	343	40	433	437
Recoveries	0	0	58	0
Provision for (release of) credit losses	(261)	69	(196)	2,530
Balance at end of period	12,127	12,634	12,127	12,634	12,305
Installment and Other Consumer
Allowance for Credit Losses on Loans
Balance at beginning of period	112	163	138	232	232
Charge-offs	104	66	303	196	265
Recoveries	29	20	100	80
Provision for (release of) credit losses	51	29	153	30
Balance at end of period	88	146	88	146	138
Un- allocated
Allowance for Credit Losses on Loans
Balance at beginning of period	193	0	(68)	187	187
Charge-offs	0	0		0
Recoveries	0	0		0
Provision for (release of) credit losses	36	(165)	297	(352)
Balance at end of period	$ 229	$ (165)	$ 229	$ (165)	$ (68)

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
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