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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Aging Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	$ 1,352,728	$ 1,368,981
Total Loans	1,352,728	1,368,981
Financial Asset, Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	5,179	7,439
30-59 Days Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1,726	3,374
60-89 Days Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	356	1,168
Greater Than 89 Days Past Due
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	3,097	2,897
Current
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1,347,549	1,361,542
Commercial/Agricultural real estate: | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	707,994	707,009
Total Loans	707,994	707,009
Commercial/Agricultural real estate: | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	70,726	72,738
Total Loans	70,726	72,738
Commercial/Agricultural real estate: | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	237,736	220,706
Total Loans	237,736	220,706
Commercial/Agricultural real estate: | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	58,158	78,146
Total Loans	58,158	78,146
Commercial/Agricultural real estate: | Financial Asset, Past Due | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	811	1,546
Commercial/Agricultural real estate: | Financial Asset, Past Due | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	656	582
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	289	0
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	217	857
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	41	26
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	289	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	224	322
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	61	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	370	367
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	554	556
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	0
Commercial/Agricultural real estate: | Current | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	707,183	705,463
Commercial/Agricultural real estate: | Current | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	70,070	72,156
Commercial/Agricultural real estate: | Current | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	237,736	220,706
Commercial/Agricultural real estate: | Current | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	57,869	78,146
C&I/Agricultural operating: | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	109,479	115,535
Total Loans	109,479	115,535
C&I/Agricultural operating: | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	29,329	31,017
Total Loans	29,329	31,017
C&I/Agricultural operating: | Financial Asset, Past Due | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	551	1,180
C&I/Agricultural operating: | Financial Asset, Past Due | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	725	793
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	50	566
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	50
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	501	564
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	725	793
C&I/Agricultural operating: | Current | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	108,928	114,355
C&I/Agricultural operating: | Current | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	28,604	30,224
Residential mortgage: | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	128,633	131,892
Total Loans	128,633	131,892
Residential mortgage: | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	2,560	2,956
Total Loans	2,560	2,956
Residential mortgage: | Financial Asset, Past Due | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1,953	3,169
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	1,069	1,873
Residential mortgage: | 30-59 Days Past Due | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Residential mortgage: | 60-89 Days Past Due | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	54	796
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	830	500
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	117
Residential mortgage: | Current | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	126,680	128,723
Residential mortgage: | Current | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	2,443	2,839
Consumer installment: | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	3,434	3,970
Total Loans	3,434	3,970
Consumer installment: | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	4,679	5,012
Total Loans	4,679	5,012
Consumer installment: | Financial Asset, Past Due | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	17	25
Consumer installment: | Financial Asset, Past Due | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	60	27
Consumer installment: | 30-59 Days Past Due | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	16	25
Consumer installment: | 30-59 Days Past Due | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	44	27
Consumer installment: | 60-89 Days Past Due | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1	0
Consumer installment: | 60-89 Days Past Due | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	16	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	0	0
Consumer installment: | Greater Than 89 Days Past Due | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Consumer installment: | Current | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	3,417	3,945
Consumer installment: | Current | Other consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	$ 4,619	$ 4,985

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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
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
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