LOANS AND ALLOWANCE FOR LOAN LOSSES, Recorded Investment of Residential and Consumer Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Loans Receivable [Abstract]
Loans receivable	$ 845,733	$ 848,664
Percentage of unsecured loans	4.10%	4.22%
Consumer [Member]
Loans Receivable [Abstract]
Loans receivable	$ 138,903	$ 132,045
Consumer [Member] | Automobile [Member]
Loans Receivable [Abstract]
Loans receivable	53,022	55,241
Consumer [Member] | Home Equity [Member]
Loans Receivable [Abstract]
Loans receivable	21,521	19,993
Consumer [Member] | Other [Member]
Loans Receivable [Abstract]
Loans receivable	64,360	56,811
Residential Real Estate [Member]
Loans Receivable [Abstract]
Loans receivable	280,104	305,478
Consumer and Residential [Member]
Loans Receivable [Abstract]
Loans receivable	419,007	437,523
Performing [Member] | Consumer [Member] | Automobile [Member]
Loans Receivable [Abstract]
Loans receivable	52,753	54,966
Performing [Member] | Consumer [Member] | Home Equity [Member]
Loans Receivable [Abstract]
Loans receivable	21,389	19,783
Performing [Member] | Consumer [Member] | Other [Member]
Loans Receivable [Abstract]
Loans receivable	64,234	56,639
Performing [Member] | Residential Real Estate [Member]
Loans Receivable [Abstract]
Loans receivable	276,021	300,095
Performing [Member] | Consumer and Residential [Member]
Loans Receivable [Abstract]
Loans receivable	414,397	431,483
Nonperforming [Member] | Consumer [Member] | Automobile [Member]
Loans Receivable [Abstract]
Loans receivable	269	275
Nonperforming [Member] | Consumer [Member] | Home Equity [Member]
Loans Receivable [Abstract]
Loans receivable	132	210
Nonperforming [Member] | Consumer [Member] | Other [Member]
Loans Receivable [Abstract]
Loans receivable	126	172
Nonperforming [Member] | Residential Real Estate [Member]
Loans Receivable [Abstract]
Loans receivable	4,083	5,383
Nonperforming [Member] | Consumer and Residential [Member]
Loans Receivable [Abstract]
Loans receivable	$ 4,610	$ 6,040