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LOANS, ALLOWANCE FOR LOAN LOSSES AND IMPAIRED LOANS - Loans by Loan Class Modified in Troubled Debt Restructuring (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) loan contract troubled_debt_restructuring	Dec. 31, 2021 USD ($) loan contract troubled_debt_restructuring
Troubled Debt Restructuring
Number of Modifications | troubled_debt_restructuring	23	15
Recorded Investment	$ 7,788	$ 12,523
Commercial/Agricultural real estate:
Troubled Debt Restructuring
Number of Modifications | contract	7	3
C&I/Agricultural operating:
Troubled Debt Restructuring
Number of Modifications | contract	5	1
Residential mortgage:
Troubled Debt Restructuring
Number of Modifications | contract	11	8
Consumer installment:
Troubled Debt Restructuring
Number of Modifications | contract	0	3
Originated Loans
Troubled Debt Restructuring
Number of Modifications | loan	67	76
Recorded Investment	$ 7,788	$ 12,523
Originated Loans | Commercial/Agricultural real estate:
Troubled Debt Restructuring
Number of Modifications | loan	14	19
Recorded Investment	$ 3,214	$ 8,007
Originated Loans | C&I/Agricultural operating:
Troubled Debt Restructuring
Number of Modifications | loan	8	7
Recorded Investment	$ 1,351	$ 1,203
Originated Loans | Residential mortgage:
Troubled Debt Restructuring
Number of Modifications | loan	45	43
Recorded Investment	$ 3,223	$ 3,274
Originated Loans | Consumer installment:
Troubled Debt Restructuring
Number of Modifications | loan	0	7
Recorded Investment	$ 0	$ 39

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- Definition

Troubled debt restructuring.

+ References

No definition available.

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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