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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	$ 1,424,828	$ 1,460,792
Total Loans	1,424,828	1,460,792
Financial Asset, Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	6,540	10,524
30-59 Days Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	2,379	1,405
60-89 Days Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1,052	891
Greater Than 89 Days Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	3,109	8,228
Current
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1,418,288	1,450,268
Commercial/Agricultural real estate: | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	728,447	748,447
Total Loans	728,447	748,447
Commercial/Agricultural real estate: | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	75,613	83,157
Total Loans	75,613	83,157
Commercial/Agricultural real estate: | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	239,065	228,004
Total Loans	239,065	228,004
Commercial/Agricultural real estate: | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	87,381	110,218
Total Loans	87,381	110,218
Commercial/Agricultural real estate: | Financial Asset, Past Due | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	357	5,937
Commercial/Agricultural real estate: | Financial Asset, Past Due | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	583	391
Commercial/Agricultural real estate: | Financial Asset, Past Due | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Commercial/Agricultural real estate: | Financial Asset, Past Due | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	413	54
Commercial/Agricultural real estate: | 30-59 Days Past Due | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	125	50
Commercial/Agricultural real estate: | 30-59 Days Past Due | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	229	30
Commercial/Agricultural real estate: | 30-59 Days Past Due | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Commercial/Agricultural real estate: | 30-59 Days Past Due | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	413	0
Commercial/Agricultural real estate: | 60-89 Days Past Due | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	308
Commercial/Agricultural real estate: | 60-89 Days Past Due | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Commercial/Agricultural real estate: | 60-89 Days Past Due | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Commercial/Agricultural real estate: | 60-89 Days Past Due | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Commercial/Agricultural real estate: | Greater Than 89 Days Past Due | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	232	5,579
Commercial/Agricultural real estate: | Greater Than 89 Days Past Due | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	354	361
Commercial/Agricultural real estate: | Greater Than 89 Days Past Due | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Commercial/Agricultural real estate: | Greater Than 89 Days Past Due | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	54
Commercial/Agricultural real estate: | Current | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	728,090	742,510
Commercial/Agricultural real estate: | Current | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	75,030	82,766
Commercial/Agricultural real estate: | Current | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	239,065	228,004
Commercial/Agricultural real estate: | Current | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	86,968	110,164
C&I/Agricultural operating: | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	119,514	121,190
Total Loans	119,514	121,190
C&I/Agricultural operating: | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	27,567	25,695
Total Loans	27,567	25,695
C&I/Agricultural operating: | Financial Asset, Past Due | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	722	248
C&I/Agricultural operating: | Financial Asset, Past Due | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	901	1,179
C&I/Agricultural operating: | 30-59 Days Past Due | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	48	248
C&I/Agricultural operating: | 30-59 Days Past Due | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
C&I/Agricultural operating: | 60-89 Days Past Due | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	253	0
C&I/Agricultural operating: | 60-89 Days Past Due | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
C&I/Agricultural operating: | Greater Than 89 Days Past Due | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	421	0
C&I/Agricultural operating: | Greater Than 89 Days Past Due | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	901	1,179
C&I/Agricultural operating: | Current | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	118,792	120,942
C&I/Agricultural operating: | Current | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	26,666	24,516
Residential mortgage: | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	134,467	128,479
Total Loans	134,467	128,479
Residential mortgage: | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	2,932	2,880
Total Loans	2,932	2,880
Residential mortgage: | Financial Asset, Past Due | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	3,374	2,462
Residential mortgage: | Financial Asset, Past Due | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	117	117
Residential mortgage: | 30-59 Days Past Due | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1,534	856
Residential mortgage: | 30-59 Days Past Due | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	117
Residential mortgage: | 60-89 Days Past Due | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	770	583
Residential mortgage: | 60-89 Days Past Due | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Residential mortgage: | Greater Than 89 Days Past Due | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1,070	1,023
Residential mortgage: | Greater Than 89 Days Past Due | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	117	0
Residential mortgage: | Current | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	131,093	126,017
Residential mortgage: | Current | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	2,815	2,763
Consumer installment: | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	4,405	6,535
Total Loans	4,405	6,535
Consumer installment: | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	5,437	6,187
Total Loans	5,437	6,187
Consumer installment: | Financial Asset, Past Due | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	21	78
Consumer installment: | Financial Asset, Past Due | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	52	58
Consumer installment: | 30-59 Days Past Due | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	9	66
Consumer installment: | 30-59 Days Past Due | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	21	38
Consumer installment: | 60-89 Days Past Due | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Consumer installment: | 60-89 Days Past Due | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	29	0
Consumer installment: | Greater Than 89 Days Past Due | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	12	12
Consumer installment: | Greater Than 89 Days Past Due | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	2	20
Consumer installment: | Current | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	4,384	6,457
Consumer installment: | Current | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	$ 5,385	$ 6,129

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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-Name Accounting Standards Codification
-Section S99
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