LOANS - ALLOWANCE FOR LOAN LOSSES AND RECORDED INVESTMENT (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Loans
Accrued interest receivable	$ 3,100,000	$ 2,800,000
Allowance for Loan Losses:
Individually Evaluated for Impairment	52,000	201,000
Collectively Evaluated for Impairment	8,408,000	7,926,000
Total	8,460,000	8,127,000	$ 7,720,000
Loans:
Individually Evaluated for Impairment	4,509,000	4,932,000
Collectively Evaluated for Impairment	739,804,000	681,212,000
Total	744,313,000	686,144,000
Commercial
Allowance for Loan Losses:
Individually Evaluated for Impairment		191,000
Collectively Evaluated for Impairment	920,000	968,000
Total	920,000	1,159,000	975,000
Loans:
Individually Evaluated for Impairment		191,000
Collectively Evaluated for Impairment	86,552,000	85,958,000
Total	86,552,000	86,149,000
Real estate construction
Allowance for Loan Losses:
Collectively Evaluated for Impairment	551,000	414,000
Total	551,000	414,000	462,000
Loans:
Individually Evaluated for Impairment	374,000	374,000
Collectively Evaluated for Impairment	31,845,000	23,880,000
Total	32,219,000	24,254,000
1-4 family residential
Allowance for Loan Losses:
Individually Evaluated for Impairment	2,000	10,000
Collectively Evaluated for Impairment	2,899,000	2,595,000
Total	2,901,000	2,605,000	2,316,000
Loans:
Individually Evaluated for Impairment	202,000	1,003,000
Collectively Evaluated for Impairment	291,217,000	251,315,000
Total	291,419,000	252,318,000
Multi-family residential
Allowance for Loan Losses:
Individually Evaluated for Impairment	50,000
Collectively Evaluated for Impairment	757,000	733,000
Total	807,000	733,000	640,000
Loans:
Individually Evaluated for Impairment	1,292,000	1,973,000
Collectively Evaluated for Impairment	47,330,000	44,430,000
Total	48,622,000	46,403,000
Non-farm & non-residential
Allowance for Loan Losses:
Collectively Evaluated for Impairment	1,643,000	1,649,000
Total	1,643,000	1,649,000	1,554,000
Loans:
Individually Evaluated for Impairment	1,799,000	227,000
Collectively Evaluated for Impairment	203,109,000	196,447,000
Total	204,908,000	196,674,000
Agricultural
Allowance for Loan Losses:
Collectively Evaluated for Impairment	389,000	420,000
Total	389,000	420,000	494,000
Loans:
Individually Evaluated for Impairment	842,000	1,164,000
Collectively Evaluated for Impairment	56,324,000	58,885,000
Total	57,166,000	60,049,000
Consumer
Allowance for Loan Losses:
Collectively Evaluated for Impairment	506,000	410,000
Total	506,000	410,000	582,000
Loans:
Collectively Evaluated for Impairment	23,122,000	20,089,000
Total	23,122,000	20,089,000
Other
Allowance for Loan Losses:
Collectively Evaluated for Impairment	43,000	58,000
Total	43,000	58,000	18,000
Loans:
Collectively Evaluated for Impairment	305,000	208,000
Total	305,000	208,000
Unallocated
Allowance for Loan Losses:
Collectively Evaluated for Impairment	700,000	679,000
Total	$ 700,000	$ 679,000	$ 679,000