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LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Credit Quality Information (Details) | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) loan | Dec. 31, 2019 USD ($) loan | Jun. 30, 2019 USD ($) | Dec. 31, 2018 USD ($)
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | $ 284,963,000 | $ 284,738,000 |  |
Non-accrual | 3,941,000 | 4,127,000 | $ 4,518,000 | $ 1,947,000
Troubled debt restructures | $ 40,000 | $ 41,000 |  |
Number of TDRs accounts | loan | 1 | 1 |  |
Non-performing TDRs | 40 | 41,000 |  |
Number of non-performing TDRs accounts | loan | 1 | 1 |  |
Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | $ 280,525,000 | $ 280,070,000 |  |
Substandard |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 4,320,000 | 4,589,000 |  |
Doubtful |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 118,000 | 79,000 |  |
Consumer |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 12,221,000 | 12,076,000 |  |
Non-accrual | 86,000 | 137,000 | 216,000 | 186,000
Troubled debt restructures | $ 40,000 | $ 41,000 |  |
Number of TDRs accounts | loan | 1 | 1 |  |
Non-performing TDRs | 40 | 41,000 |  |
Number of non-performing TDRs accounts | loan | 1 | 1 |  |
Consumer | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | $ 12,136,000 | $ 11,939,000 |  |
Consumer | Substandard |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 85,000 | 137,000 |  |
Residential Real estate |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 83,089,000 | 81,033,000 |  |
Non-accrual | 631,000 | 728,000 | 883,000 | 956,000
Residential Real estate | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 82,459,000 | 80,305,000 |  |
Residential Real estate | Substandard |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 630,000 | 728,000 |  |
Indirect |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 87,168,000 | 102,384,000 |  |
Non-accrual | 152,000 | 123,000 | 30,000 | 116,000
Indirect | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 87,015,000 | 102,261,000 |  |
Indirect | Substandard |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 35,000 | 44,000 |  |
Indirect | Doubtful |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 118,000 | 79,000 |  |
Commercial |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 11,809,000 | 11,907,000 |  |
Non-accrual |  |  | 86,000 | 27,000
Commercial | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 11,809,000 | 11,907,000 |  |
Commercial SBA PPP |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 17,367,000 | 0 |  |
Commercial SBA PPP | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 17,367,000 |  |  |
Construction |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 2,928,000 | 3,317,000 |  |
Construction | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 2,928,000 | 3,317,000 |  |
Commercial Real Estate |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 70,381,000 | 74,021,000 |  |
Non-accrual | 3,072,000 | 3,139,000 | $ 3,303,000 | $ 662,000
Commercial Real Estate | Pass |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | 66,811,000 | 70,341,000 |  |
Commercial Real Estate | Substandard |  |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |  |
Total | $ 3,570,000 | $ 3,680,000 |  |

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