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LOANS, ALLOWANCE FOR LOAN LOSSES AND IMPAIRED LOANS - Past Due Financing Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	$ 1,411,784	$ 1,310,963
Total Past Due Accruing and Nonaccrual Loans	22,861	15,726
Current	1,393,274	1,301,319
Total Loans	1,416,135	1,317,045
Total Past Due Accruing
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	11,657	4,061
30-59 Days Past Due and Accruing
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	10,816	3,341
60-89 Days Past Due and Accruing
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	595	560
Greater Than 89 Days Past Due and Accruing
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	246	160
Nonaccrual Loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	11,204	11,665
Commercial/Agricultural real estate: | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Total Past Due Accruing and Nonaccrual Loans	6,026	5,410
Current	719,945	693,055
Total Loans	725,971	698,465
Commercial/Agricultural real estate: | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Total Past Due Accruing and Nonaccrual Loans	7,734	3,992
Current	80,174	74,503
Total Loans	87,908	78,495
Commercial/Agricultural real estate: | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Total Past Due Accruing and Nonaccrual Loans	0	0
Current	208,908	178,349
Total Loans	208,908	178,349
Commercial/Agricultural real estate: | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Total Past Due Accruing and Nonaccrual Loans	3,975	0
Current	98,517	79,520
Total Loans	102,492	79,520
Commercial/Agricultural real estate: | Total Past Due Accruing | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	290	36
Commercial/Agricultural real estate: | Total Past Due Accruing | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	4,992	502
Commercial/Agricultural real estate: | Total Past Due Accruing | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Commercial/Agricultural real estate: | Total Past Due Accruing | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	3,975	0
Commercial/Agricultural real estate: | 30-59 Days Past Due and Accruing | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	202	36
Commercial/Agricultural real estate: | 30-59 Days Past Due and Accruing | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	4,992	498
Commercial/Agricultural real estate: | 30-59 Days Past Due and Accruing | 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 and Accruing | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	3,975	0
Commercial/Agricultural real estate: | 60-89 Days Past Due and Accruing | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	88	0
Commercial/Agricultural real estate: | 60-89 Days Past Due and Accruing | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	4
Commercial/Agricultural real estate: | 60-89 Days Past Due and Accruing | 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 and Accruing | 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 and Accruing | Commercial 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 and Accruing | Agricultural 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 and Accruing | 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 and Accruing | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Commercial/Agricultural real estate: | Nonaccrual Loans | Commercial real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	5,736	5,374
Commercial/Agricultural real estate: | Nonaccrual Loans | Agricultural real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	2,742	3,490
Commercial/Agricultural real estate: | Nonaccrual Loans | Multi-family real estate
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Commercial/Agricultural real estate: | Nonaccrual Loans | Construction and land development
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
C&I/Agricultural operating: | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Total Past Due Accruing and Nonaccrual Loans	578	330
Current	135,435	121,837
Total Loans	136,013	122,167
C&I/Agricultural operating: | SBA PPP loans
Aging analysis of the Bank's real estate and consumer loans
Total Past Due Accruing and Nonaccrual Loans	0	0
Current	0	8,755
Total Loans	0	8,755
C&I/Agricultural operating: | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Total Past Due Accruing and Nonaccrual Loans	1,716	2,116
Current	27,090	29,472
Total Loans	28,806	31,588
C&I/Agricultural operating: | Total Past Due Accruing | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	26	32
C&I/Agricultural operating: | Total Past Due Accruing | SBA PPP loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
C&I/Agricultural operating: | Total Past Due Accruing | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	826	1,123
C&I/Agricultural operating: | 30-59 Days Past Due and Accruing | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
C&I/Agricultural operating: | 30-59 Days Past Due and Accruing | SBA PPP loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
C&I/Agricultural operating: | 30-59 Days Past Due and Accruing | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	826	1,123
C&I/Agricultural operating: | 60-89 Days Past Due and Accruing | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	26	32
C&I/Agricultural operating: | 60-89 Days Past Due and Accruing | SBA PPP loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
C&I/Agricultural operating: | 60-89 Days Past Due and Accruing | 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 and Accruing | Commercial and industrial
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 and Accruing | SBA PPP loans
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 and Accruing | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
C&I/Agricultural operating: | Nonaccrual Loans | Commercial and industrial
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	552	298
C&I/Agricultural operating: | Nonaccrual Loans | SBA PPP loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
C&I/Agricultural operating: | Nonaccrual Loans | Agricultural operating
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	890	993
Residential mortgage: | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Total Past Due Accruing and Nonaccrual Loans	2,735	3,382
Current	102,654	87,608
Total Loans	105,389	90,990
Residential mortgage: | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Total Past Due Accruing and Nonaccrual Loans	0	282
Current	3,262	3,589
Total Loans	3,262	3,871
Residential mortgage: | Total Past Due Accruing | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1,482	2,114
Residential mortgage: | Total Past Due Accruing | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	117
Residential mortgage: | 30-59 Days Past Due and Accruing | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	767	1,471
Residential mortgage: | 30-59 Days Past Due and Accruing | 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 and Accruing | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	479	487
Residential mortgage: | 60-89 Days Past Due and Accruing | 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 and Accruing | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	236	156
Residential mortgage: | Greater Than 89 Days Past Due and Accruing | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	0
Residential mortgage: | Nonaccrual Loans | Residential mortgage
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	1,253	1,268
Residential mortgage: | Nonaccrual Loans | Purchased HELOC loans
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	165
Consumer installment: | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Total Past Due Accruing and Nonaccrual Loans	42	120
Current	10,194	15,851
Total Loans	10,236	15,971
Consumer installment: | Other Consumer
Aging analysis of the Bank's real estate and consumer loans
Total Past Due Accruing and Nonaccrual Loans	55	94
Current	7,095	8,780
Total Loans	7,150	8,874
Consumer installment: | Total Past Due Accruing | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	15	65
Consumer installment: | Total Past Due Accruing | Other Consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	51	72
Consumer installment: | 30-59 Days Past Due and Accruing | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	15	38
Consumer installment: | 30-59 Days Past Due and Accruing | Other Consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	39	58
Consumer installment: | 60-89 Days Past Due and Accruing | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	0	27
Consumer installment: | 60-89 Days Past Due and Accruing | Other Consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	2	10
Consumer installment: | Greater Than 89 Days Past Due and Accruing | 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 and Accruing | Other Consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	10	4
Consumer installment: | Nonaccrual Loans | Originated indirect paper
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	27	55
Consumer installment: | Nonaccrual Loans | Other Consumer
Aging analysis of the Bank's real estate and consumer loans
Loans receivable	$ 4	$ 22

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