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LOANS AND RELATED ALLOWANCE FOR LOAN LOSSES, Trouble Debt Restructuring (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($) Contract | Dec. 31, 2018 USD ($) Contract | Dec. 31, 2017 USD ($) Contract
LOANS AND RELATED ALLOWANCE FOR LOAN LOSSES [Abstract] |  |  |
Reserves of allowance for loan losses | $ 345 | $ 255 | $ 41
Recidivism receivables [Abstract] |  |  |
Number of contract, subsequently defaults | Contract | 4 | 5 | 2
Total recidivism, Recorded investment | $ 1,576 | $ 2,169 | $ 632
Interest Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 0 | 0 | 0
Pre-modification outstanding recorded investment | $ 0 | $ 0 | $ 0
Post-modification outstanding recorded investment | $ 0 | $ 0 | $ 0
Term Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 20 | 13 | 12
Pre-modification outstanding recorded investment | $ 3,805 | $ 4,076 | $ 8,691
Post-modification outstanding recorded investment | $ 3,805 | $ 4,076 | $ 8,691
Real Estate Loans [Member] | Mortgages [Member] | Interest Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 0 | 0 |
Pre-modification outstanding recorded investment | $ 0 | $ 0 |
Post-modification outstanding recorded investment | $ 0 | $ 0 |
Real Estate Loans [Member] | Mortgages [Member] | Term Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 1 | 1 |
Pre-modification outstanding recorded investment | $ 4 | $ 7 |
Post-modification outstanding recorded investment | $ 4 | $ 7 |
Real Estate Loans [Member] | Home Equity [Member] | Interest Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 0 | 0 | 0
Pre-modification outstanding recorded investment | $ 0 | $ 0 | $ 0
Post-modification outstanding recorded investment | $ 0 | $ 0 | $ 0
Real Estate Loans [Member] | Home Equity [Member] | Term Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 1 | 1 | 1
Pre-modification outstanding recorded investment | $ 40 | $ 1 | $ 25
Post-modification outstanding recorded investment | $ 40 | $ 1 | $ 25
Real Estate Loans [Member] | Commercial [Member] |  |  |
Recidivism receivables [Abstract] |  |  |
Number of contract, subsequently defaults | Contract | 0 | 2 | 0
Total recidivism, Recorded investment | $ 0 | $ 683 | $ 0
Real Estate Loans [Member] | Commercial [Member] | Interest Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 0 | 0 | 0
Pre-modification outstanding recorded investment | $ 0 | $ 0 | $ 0
Post-modification outstanding recorded investment | $ 0 | $ 0 | $ 0
Real Estate Loans [Member] | Commercial [Member] | Term Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 6 | 2 | 5
Pre-modification outstanding recorded investment | $ 918 | $ 683 | $ 7,021
Post-modification outstanding recorded investment | $ 918 | $ 683 | $ 7,021
Real Estate Loans [Member] | Agricultural [Member] |  |  |
Recidivism receivables [Abstract] |  |  |
Number of contract, subsequently defaults | Contract | 1 | 2 | 0
Total recidivism, Recorded investment | $ 1,439 | $ 1,325 | $ 0
Real Estate Loans [Member] | Agricultural [Member] | Interest Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 0 | 0 | 0
Pre-modification outstanding recorded investment | $ 0 | $ 0 | $ 0
Post-modification outstanding recorded investment | $ 0 | $ 0 | $ 0
Real Estate Loans [Member] | Agricultural [Member] | Term Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 5 | 5 | 4
Pre-modification outstanding recorded investment | $ 1,731 | $ 3,209 | $ 1,475
Post-modification outstanding recorded investment | $ 1,731 | $ 3,209 | $ 1,475
Other Commercial Loans [Member] | Interest Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 0 |  | 0
Pre-modification outstanding recorded investment | $ 0 |  | $ 0
Post-modification outstanding recorded investment | $ 0 |  | $ 0
Other Commercial Loans [Member] | Term Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 1 |  | 1
Pre-modification outstanding recorded investment | $ 55 |  | $ 9
Post-modification outstanding recorded investment | $ 55 |  | $ 9
Other Agricultural Loans [Member] |  |  |
Recidivism receivables [Abstract] |  |  |
Number of contract, subsequently defaults | Contract | 3 | 1 | 2
Total recidivism, Recorded investment | $ 137 | $ 161 | $ 632
Other Agricultural Loans [Member] | Interest Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 0 | 0 | 0
Pre-modification outstanding recorded investment | $ 0 | $ 0 | $ 0
Post-modification outstanding recorded investment | $ 0 | $ 0 | $ 0
Other Agricultural Loans [Member] | Term Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 5 | 4 | 1
Pre-modification outstanding recorded investment | $ 1,054 | $ 176 | $ 161
Post-modification outstanding recorded investment | $ 1,054 | $ 176 | $ 161
Consumer [Member] | Interest Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 0 |  |
Pre-modification outstanding recorded investment | $ 0 |  |
Post-modification outstanding recorded investment | $ 0 |  |
Consumer [Member] | Term Modification [Member] |  |  |
Financing receivable modifications [Abstract] |  |  |
Number of contracts | Contract | 1 |  |
Pre-modification outstanding recorded investment | $ 3 |  |
Post-modification outstanding recorded investment | $ 3 |  |

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