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LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Summary of recorded investment amount and related allowance for losses of impaired loans (Details) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2019 USD ($) borrower loan | Mar. 31, 2019 USD ($) loan | Mar. 31, 2018 borrower | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Allowance for loan loss | $ 2,605,000 | $ 2,605,000 |  | $ 2,541,000 | $ 2,589,000
Loans outstanding | $ 800,000 | $ 800,000 |  |  |
Number of borrowers | 19 | 1 | 7 |  |
Amount of troubled debt restructured loans, outstanding | $ 42,831 | $ 42,831 |  |  |
Amount of troubled debt restructured loans, specific reserve | 16,371 | 16,371 |  |  |
Specific Reserve | 255,000 | 255,000 |  |  |
30-89 Days Past Due |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Loans outstanding | 4,002,000 | 4,002,000 |  | 1,726,000 |
30-89 Days Past Due | Substandard |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Loans outstanding | 1,000,000 | 1,000,000 |  |  |
Consumer |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Allowance for loan loss | $ 186,000 | $ 186,000 |  | 161,000 | 214,000
Number of loans | loan | 3 | 3 |  |  |
Number of borrowers | borrower | 3 |  |  |  |
Amount of consumer and indirect loans, outstanding | $ 174,870 | $ 174,870 |  |  |
Amount of consumer and indirect loans, specific reserves | 51,920 | 51,920 |  |  |
Consumer | 30-89 Days Past Due |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Loans outstanding | 152,000 | 152,000 |  | 216,000 |
Commercial |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Allowance for loan loss | 249,000 | 249,000 |  | 241,000 | 237,000
Specific Reserve | 203,000 | 203,000 |  |  |
Commercial | 30-89 Days Past Due |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Loans outstanding |  |  |  | 86,000 |
Commercial | 30-89 Days Past Due | Substandard |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Loans outstanding | 202,000 | 202,000 |  |  |
Commercial Real Estate |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Allowance for loan loss | 324,000 | 324,000 |  | $ 283,000 | $ 291,000
Commercial Real Estate | 30-89 Days Past Due |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Loans outstanding | 2,830,000 | 2,830,000 |  |  |
Commercial Real Estate | 30-89 Days Past Due | Substandard |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |
Loans outstanding | $ 583,000 | $ 583,000 |  |  |

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- Definition Represents loans and leases receivable consumer and indirect loans + References No definition available. + Details
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- Definition Represents loans and leases receivable troubled debt restructured. + References No definition available. + Details
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