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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Loans	$ 1,450,159	$ 1,460,792
Allowance for credit losses	(22,436)	(22,908)	$ (22,679)	$ (17,939)
Loans receivable, net	$ 1,427,723	$ 1,437,884
Total, percent	100.00%	100.00%
Commercial/Agricultural Real Estate
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Allowance for credit losses	$ (18,255)	$ (18,784)	(18,496)	(14,085)
Commercial/Agricultural Real Estate | Commercial real estate
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Loans	$ 743,630	$ 748,447
Total, percent	51.30%	51.20%
Commercial/Agricultural Real Estate | Agricultural real estate
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Loans	$ 80,267	$ 83,157
Total, percent	5.60%	5.70%
Commercial/Agricultural Real Estate | Multi-family real estate
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Loans	$ 235,318	$ 228,004
Total, percent	16.20%	15.60%
Commercial/Agricultural Real Estate | Construction and land development
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Loans	$ 93,055	$ 110,218
Total, percent	6.40%	7.50%
C&I/Agricultural operating:
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Allowance for credit losses	$ (1,166)	$ (1,105)	(1,848)	(2,318)
C&I/Agricultural operating: | Commercial and industrial
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Loans	$ 128,011	$ 121,190
Total, percent	8.80%	8.30%
C&I/Agricultural operating: | Agricultural operating
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Loans	$ 26,244	$ 25,695
Total, percent	1.80%	1.80%
Residential mortgage:
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Allowance for credit losses	$ (2,765)	$ (2,744)	(2,000)	(599)
Residential mortgage: | Residential mortgage
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Loans	$ 129,139	$ 128,479
Total, percent	8.90%	8.80%
Residential mortgage: | Purchased HELOC loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Loans	$ 2,895	$ 2,880
Total, percent	0.20%	0.20%
Consumer installment:
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Allowance for credit losses	$ (250)	$ (275)	$ (335)	$ (129)
Consumer installment: | Originated indirect paper
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Loans	$ 5,851	$ 6,535
Total, percent	0.40%	0.40%
Consumer installment: | Other consumer
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Loans	$ 5,749	$ 6,187
Total, percent	0.40%	0.40%

X

- Definition

Percentage, before allowance for credit loss, of financing receivable to total financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (c)
-Publisher SEC

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 29
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Publisher FASB
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
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-URI https://asc.fasb.org//1943274/2147481598/310-20-45-2

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