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Loans and Allowance for Credit Losses - Schedule of Credit Quality (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	$ 169,542		$ 169,542		$ 321,352
Year two	230,773		230,773		467,922
Year three	403,009		403,009		348,589
Year four	296,196		296,196		167,176
Year five	148,434		148,434		40,673
Prior	95,197		95,197		69,913
Revolving Loans Amortized Cost Basis	120,193		120,193		121,149
Revolving Loans Converted to Term Loans Amortized Cost Basis	3,407		3,407		2,373
Total	1,466,751		1,466,751		1,539,147
Current fiscal year, charge-offs			10		84
Fiscal year before current fiscal year, charge-offs			575		24
Two year before current fiscal year, charge-offs			9		7
Three year before current fiscal year, charge-offs			157		75
Four year before current fiscal year, charge-offs			2		0
Prior, charge-offs			288		424
Revolving loans, charge-offs			1,769		14
Revolving, converted to term loan, charge-offs			0		0
Total charge-offs	679	$ 95	2,810	$ 291	628
Pass
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	133,020		133,020		300,974
Year two	229,507		229,507		450,025
Year three	386,559		386,559		328,324
Year four	292,747		292,747		165,714
Year five	147,345		147,345		40,119
Prior	93,405		93,405		66,694
Revolving Loans Amortized Cost Basis	116,094		116,094		116,289
Revolving Loans Converted to Term Loans Amortized Cost Basis	2,825		2,825		1,074
Total	1,401,502		1,401,502		1,469,213
Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	8,301		8,301
Year two	277		277
Year three	6,398		6,398
Year four	2,390		2,390
Year five	965		965
Prior	1,392		1,392
Revolving Loans Amortized Cost Basis	2,431		2,431
Revolving Loans Converted to Term Loans Amortized Cost Basis	582		582
Total	22,736		22,736
Special Mention
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	27,655		27,655		16,873
Year two	0		0		13,751
Year three	5,747		5,747		3,180
Year four	0		0		970
Year five	0		0		419
Prior	0		0		2,489
Revolving Loans Amortized Cost Basis	0		0		2,698
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	33,402		33,402		40,380
Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	280		280		1,097
Year two	75		75		3,973
Year three	3,637		3,637		15,963
Year four	857		857		145
Year five	31		31		45
Prior	40		40		415
Revolving Loans Amortized Cost Basis	500		500		323
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		1,299
Total	5,420		5,420		23,260
Doubtful
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	0		0
Year two	0		0
Year three	0		0
Year four	15		15
Year five	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0
Total	15		15
Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	286		286		2,408
Year two	914		914		173
Year three	668		668		1,122
Year four	187		187		347
Year five	93		93		90
Prior	360		360		315
Revolving Loans Amortized Cost Basis	1,168		1,168		1,839
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	3,676		3,676		6,294
Commercial, Financial, and Agricultural
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	20,220		20,220		40,634
Year two	23,747		23,747		49,441
Year three	39,255		39,255		33,180
Year four	27,441		27,441		31,567
Year five	27,978		27,978		4,784
Prior	4,394		4,394		5,304
Revolving Loans Amortized Cost Basis	57,711		57,711		59,853
Revolving Loans Converted to Term Loans Amortized Cost Basis	1,595		1,595		1,512
Total	202,341		202,341		226,275
Current fiscal year, charge-offs			0		0
Fiscal year before current fiscal year, charge-offs			230		1
Two year before current fiscal year, charge-offs			0		0
Three year before current fiscal year, charge-offs			89		0
Four year before current fiscal year, charge-offs			2		0
Prior, charge-offs			91		160
Revolving loans, charge-offs			1,746		0
Revolving, converted to term loan, charge-offs			0		0
Total charge-offs	270	16	2,158	59	161
Commercial, Financial, and Agricultural | Pass
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	19,766		19,766		40,103
Year two	23,289		23,289		43,082
Year three	34,214		34,214		32,812
Year four	26,690		26,690		30,965
Year five	27,620		27,620		4,774
Prior	4,127		4,127		5,022
Revolving Loans Amortized Cost Basis	53,944		53,944		55,379
Revolving Loans Converted to Term Loans Amortized Cost Basis	1,595		1,595		213
Total	191,245		191,245		212,350
Commercial, Financial, and Agricultural | Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	0		0
Year two	101		101
Year three	1,460		1,460
Year four	0		0
Year five	321		321
Prior	267		267
Revolving Loans Amortized Cost Basis	2,331		2,331
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0
Total	4,480		4,480
Commercial, Financial, and Agricultural | Special Mention
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one					1
Year two					2,505
Year three					32
Year four					586
Year five					3
Prior					282
Revolving Loans Amortized Cost Basis					2,502
Revolving Loans Converted to Term Loans Amortized Cost Basis					0
Total					5,911
Commercial, Financial, and Agricultural | Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	168		168		371
Year two	0		0		3,758
Year three	3,431		3,431		19
Year four	638		638		16
Year five	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	500		500		323
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		1,299
Total	4,737		4,737		5,786
Commercial, Financial, and Agricultural | Doubtful
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	0		0
Year two	0		0
Year three	0		0
Year four	15		15
Year five	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term Loans Amortized Cost Basis
Total	15		15
Commercial, Financial, and Agricultural | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	286		286		159
Year two	357		357		96
Year three	150		150		317
Year four	98		98		0
Year five	37		37		7
Prior	0		0		0
Revolving Loans Amortized Cost Basis	936		936		1,649
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	1,864		1,864		2,228
Real Estate Construction - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	10,959		10,959		40,279
Year two	18,408		18,408		17,259
Year three	2,187		2,187		634
Year four	621		621		175
Year five	169		169		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	32,344		32,344		58,347
Current fiscal year, charge-offs			0		0
Fiscal year before current fiscal year, charge-offs			0		0
Two year before current fiscal year, charge-offs			0		0
Three year before current fiscal year, charge-offs			0		0
Four year before current fiscal year, charge-offs			0		0
Prior, charge-offs			0		0
Revolving loans, charge-offs			0		0
Revolving, converted to term loan, charge-offs			0		0
Total charge-offs	0	0	0	0	0
Real Estate Construction - Residential | Pass
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	10,959		10,959		39,847
Year two	17,954		17,954		17,259
Year three	2,187		2,187		634
Year four	621		621		175
Year five	169		169		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	31,890		31,890		57,915
Real Estate Construction - Residential | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	0		0		432
Year two	454		454		0
Year three	0		0		0
Year four	0		0		0
Year five	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	454		454		432
Real Estate Construction - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	38,573		38,573		50,685
Year two	8,641		8,641		53,075
Year three	11,061		11,061		24,371
Year four	4,028		4,028		1,040
Year five	633		633		31
Prior	682		682		804
Revolving Loans Amortized Cost Basis	1,814		1,814		290
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	65,432		65,432		130,296
Current fiscal year, charge-offs			0		0
Fiscal year before current fiscal year, charge-offs			0		0
Two year before current fiscal year, charge-offs			0		0
Three year before current fiscal year, charge-offs			0		0
Four year before current fiscal year, charge-offs			0		0
Prior, charge-offs			0		0
Revolving loans, charge-offs			0		0
Revolving, converted to term loan, charge-offs			0		0
Total charge-offs	0	0	0	0	0
Real Estate Construction - Commercial | Pass
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	38,257		38,257		49,041
Year two	8,441		8,441		53,058
Year three	11,047		11,047		24,371
Year four	4,028		4,028		1,040
Year five	633		633		31
Prior	627		627		735
Revolving Loans Amortized Cost Basis	1,814		1,814		187
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	64,847		64,847		128,463
Real Estate Construction - Commercial | Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	316		316
Year two	125		125
Year three	14		14
Year four	0		0
Year five	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0
Total	455		455
Real Estate Construction - Commercial | Special Mention
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one					934
Year two					17
Year three					0
Year four					0
Year five					0
Prior					0
Revolving Loans Amortized Cost Basis					103
Revolving Loans Converted to Term Loans Amortized Cost Basis					0
Total					1,054
Real Estate Construction - Commercial | Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	0		0		710
Year two	75		75		0
Year three	0		0		0
Year four	0		0		0
Year five	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	75		75		710
Real Estate Construction - Commercial | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	0		0		0
Year two	0		0		0
Year three	0		0		0
Year four	0		0		0
Year five	0		0		0
Prior	55		55		69
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	55		55		69
Real Estate Mortgage - Residential
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	26,146		26,146		65,667
Year two	54,317		54,317		121,704
Year three	119,938		119,938		63,502
Year four	53,005		53,005		48,441
Year five	43,794		43,794		7,313
Prior	26,836		26,836		20,875
Revolving Loans Amortized Cost Basis	43,888		43,888		44,687
Revolving Loans Converted to Term Loans Amortized Cost Basis	1,179		1,179		202
Total	369,103		369,103		372,391
Current fiscal year, charge-offs			0		0
Fiscal year before current fiscal year, charge-offs			0		0
Two year before current fiscal year, charge-offs			0		0
Three year before current fiscal year, charge-offs			0		75
Four year before current fiscal year, charge-offs			0		0
Prior, charge-offs			1		0
Revolving loans, charge-offs			22		13
Revolving, converted to term loan, charge-offs			0		0
Total charge-offs	0	0	23	0	88
Real Estate Mortgage - Residential | Pass
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	20,351		20,351		65,472
Year two	54,317		54,317		121,430
Year three	119,466		119,466		62,998
Year four	52,519		52,519		47,884
Year five	43,373		43,373		7,242
Prior	25,791		25,791		19,193
Revolving Loans Amortized Cost Basis	43,632		43,632		44,574
Revolving Loans Converted to Term Loans Amortized Cost Basis	1,179		1,179		202
Total	360,628		360,628		368,995
Real Estate Mortgage - Residential | Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	5,730		5,730
Year two	0		0
Year three	41		41
Year four	397		397
Year five	365		365
Prior	700		700
Revolving Loans Amortized Cost Basis	24		24
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0
Total	7,257		7,257
Real Estate Mortgage - Residential | Special Mention
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one					179
Year two					251
Year three					411
Year four					293
Year five					71
Prior					1,310
Revolving Loans Amortized Cost Basis					23
Revolving Loans Converted to Term Loans Amortized Cost Basis					0
Total					2,538
Real Estate Mortgage - Residential | Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	65		65		16
Year two	0		0		0
Year three	0		0		0
Year four	0		0		129
Year five	0		0		0
Prior	40		40		126
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	105		105		271
Real Estate Mortgage - Residential | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	0		0		0
Year two	0		0		23
Year three	431		431		93
Year four	89		89		135
Year five	56		56		0
Prior	305		305		246
Revolving Loans Amortized Cost Basis	232		232		90
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	1,113		1,113		587
Real Estate Mortgage - Commercial
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	71,679		71,679		116,657
Year two	121,466		121,466		219,946
Year three	226,380		226,380		224,182
Year four	209,634		209,634		84,666
Year five	75,152		75,152		27,558
Prior	60,837		60,837		41,127
Revolving Loans Amortized Cost Basis	16,706		16,706		16,229
Revolving Loans Converted to Term Loans Amortized Cost Basis	633		633		659
Total	782,487		782,487		731,024
Current fiscal year, charge-offs			0		0
Fiscal year before current fiscal year, charge-offs			340		0
Two year before current fiscal year, charge-offs			0		0
Three year before current fiscal year, charge-offs			65		0
Four year before current fiscal year, charge-offs			0		0
Prior, charge-offs			28		32
Revolving loans, charge-offs			0		0
Revolving, converted to term loan, charge-offs			0		0
Total charge-offs	343	3	433	28	32
Real Estate Mortgage - Commercial | Pass
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	41,722		41,722		99,081
Year two	121,314		121,314		208,699
Year three	215,466		215,466		204,789
Year four	207,422		207,422		84,363
Year five	74,842		74,842		27,085
Prior	60,412		60,412		39,941
Revolving Loans Amortized Cost Basis	16,630		16,630		16,059
Revolving Loans Converted to Term Loans Amortized Cost Basis	51		51		659
Total	737,859		737,859		680,676
Real Estate Mortgage - Commercial | Watch
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	2,255		2,255
Year two	51		51
Year three	4,883		4,883
Year four	1,993		1,993
Year five	279		279
Prior	425		425
Revolving Loans Amortized Cost Basis	76		76
Revolving Loans Converted to Term Loans Amortized Cost Basis	582		582
Total	10,544		10,544
Real Estate Mortgage - Commercial | Special Mention
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	27,655		27,655		15,759
Year two	0		0		10,978
Year three	5,747		5,747		2,737
Year four	0		0		91
Year five	0		0		345
Prior	0		0		897
Revolving Loans Amortized Cost Basis	0		0		70
Revolving Loans Converted to Term Loans Amortized Cost Basis					0
Total	33,402		33,402		30,877
Real Estate Mortgage - Commercial | Substandard
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	47		47		0
Year two	0		0		215
Year three	206		206		15,944
Year four	219		219		0
Year five	31		31		45
Prior	0		0		289
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	503		503		16,493
Real Estate Mortgage - Commercial | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	0		0		1,817
Year two	101		101		54
Year three	78		78		712
Year four	0		0		212
Year five	0		0		83
Prior					0
Revolving Loans Amortized Cost Basis					100
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	179		179		2,978
Installment and other consumer
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	1,965		1,965		7,430
Year two	4,194		4,194		6,497
Year three	4,188		4,188		2,720
Year four	1,467		1,467		1,287
Year five	708		708		987
Prior	2,448		2,448		1,803
Revolving Loans Amortized Cost Basis	74		74		90
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	15,044		15,044		20,814
Current fiscal year, charge-offs			10		84
Fiscal year before current fiscal year, charge-offs			5		23
Two year before current fiscal year, charge-offs			9		7
Three year before current fiscal year, charge-offs			3		0
Four year before current fiscal year, charge-offs			0		0
Prior, charge-offs			168		232
Revolving loans, charge-offs			1		1
Revolving, converted to term loan, charge-offs			0		0
Total charge-offs	66	$ 76	196	$ 204	347
Installment and other consumer | Pass
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	1,965		1,965		7,430
Year two	4,192		4,192		6,497
Year three	4,179		4,179		2,720
Year four	1,467		1,467		1,287
Year five	708		708		987
Prior	2,448		2,448		1,803
Revolving Loans Amortized Cost Basis	74		74		90
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0		0
Total	15,033		15,033		$ 20,814
Installment and other consumer | Non-accrual loans
Credit quality of the loan portfolio using internal rating system reflecting management's risk assessment
Year one	0		0
Year two	2		2
Year three	9		9
Year four	0		0
Year five	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Revolving Loans Converted to Term Loans Amortized Cost Basis	0		0
Total	$ 11		$ 11

X

- Definition

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 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 2: 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

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of 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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
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