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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Aging Analysis (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	$ 1,428,588	$ 1,460,792
Total Loans	1,428,588	1,460,792
Financial Asset, Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	7,546	10,524
30-59 Days Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	3,448	1,405
60-89 Days Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	932	891
Greater Than 89 Days Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	3,166	8,228
Current
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1,421,042	1,450,268
Commercial/Agricultural real estate: | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	727,170	748,447
Total Loans	727,170	748,447
Commercial/Agricultural real estate: | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	77,782	83,157
Total Loans	77,782	83,157
Commercial/Agricultural real estate: | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	234,624	228,004
Total Loans	234,624	228,004
Commercial/Agricultural real estate: | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	87,379	110,218
Total Loans	87,379	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	747	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	354	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	0	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	103	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	0	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	0	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	111	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	533	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	726,423	742,510
Commercial/Agricultural real estate: | Current | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	77,428	82,766
Commercial/Agricultural real estate: | Current | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	234,624	228,004
Commercial/Agricultural real estate: | Current | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	87,379	110,164
C&I/Agricultural operating: | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	127,308	121,190
Total Loans	127,308	121,190
C&I/Agricultural operating: | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	27,422	25,695
Total Loans	27,422	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	698	248
C&I/Agricultural operating: | Financial Asset, Past Due | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1,017	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	277	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	0	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	1,017	1,179
C&I/Agricultural operating: | Current | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	126,610	120,942
C&I/Agricultural operating: | Current | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	26,405	24,516
Residential mortgage: | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	133,018	128,479
Total Loans	133,018	128,479
Residential mortgage: | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	2,915	2,880
Total Loans	2,915	2,880
Residential mortgage: | Financial Asset, Past Due | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	4,531	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	3,025	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	692	583
Residential mortgage: | 60-89 Days Past Due | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	117	0
Residential mortgage: | Greater Than 89 Days Past Due | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	814	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	0	0
Residential mortgage: | Current | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	128,487	126,017
Residential mortgage: | Current | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	2,798	2,763
Consumer installment: | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	5,110	6,535
Total Loans	5,110	6,535
Consumer installment: | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	5,860	6,187
Total Loans	5,860	6,187
Consumer installment: | Financial Asset, Past Due | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	36	78
Consumer installment: | Financial Asset, Past Due | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	46	58
Consumer installment: | 30-59 Days Past Due | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	2	66
Consumer installment: | 30-59 Days Past Due | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	41	38
Consumer installment: | 60-89 Days Past Due | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	9	0
Consumer installment: | 60-89 Days Past Due | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	3	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	25	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	5,074	6,457
Consumer installment: | Current | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	$ 5,814	$ 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
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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

Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease.

+ 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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