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LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |
Balance, beginning of year |  |  | $ 2,066 | $ 2,541 | $ 2,541
Charged off |  |  | (277) | (519) | (616)
Recoveries |  |  | 137 |  | 256
Provision for loan losses | $ (669) | $ (139) | (263) | 65 | (115)
Balance, end of year | 1,663 |  | 1,663 |  | 2,066
Individually evaluated for impairment: |  |  |  |  |
Individually evaluated for impairment, Balance in allowance | 11 |  | 11 |  | 15
Individually evaluated for impairment, Related loan balance | 5,095 |  | 5,095 |  | 4,397
Collectively evaluated for impairment: |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 1,652 |  | 1,652 |  | 2,051
Collectively evaluated for impairment, Related loan balance | 268,987 |  | 268,987 |  | 280,341
Consumer |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |
Balance, beginning of year |  |  | 122 | 161 | 161
Charged off |  |  |  |  | (69)
Recoveries |  |  | 9 |  | 16
Provision for loan losses |  |  | 8 |  | 14
Balance, end of year | 139 |  | 139 |  | 122
Individually evaluated for impairment: |  |  |  |  |
Individually evaluated for impairment, Balance in allowance | 11 |  | 11 |  | 15
Individually evaluated for impairment, Related loan balance | 39 |  | 39 |  | 86
Collectively evaluated for impairment: |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 128 |  | 128 |  | 107
Collectively evaluated for impairment, Related loan balance | 12,128 |  | 12,128 |  | 11,990
Consumer | Real Estate Loan [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |
Balance, beginning of year |  |  | 589 | 864 | 864
Charged off |  |  |  |  | (16)
Recoveries |  |  | 27 |  | 5
Provision for loan losses |  |  | (65) |  | (264)
Balance, end of year | 551 |  | 551 |  | 589
Individually evaluated for impairment: |  |  |  |  |
Individually evaluated for impairment, Related loan balance | 487 |  | 487 |  | 631
Collectively evaluated for impairment: |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 551 |  | 551 |  | 589
Collectively evaluated for impairment, Related loan balance | 78,510 |  | 78,510 |  | 80,402
Indirect |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |
Balance, beginning of year |  |  | 917 | 988 | 988
Charged off |  |  | (277) |  | (504)
Recoveries |  |  | 81 |  | 225
Provision for loan losses |  |  | (117) |  | 208
Balance, end of year | 604 |  | 604 |  | 917
Collectively evaluated for impairment: |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 604 |  | 604 |  | 917
Collectively evaluated for impairment, Related loan balance | 80,544 |  | 80,544 |  | 102,384
Commercial |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |
Balance, beginning of year |  |  | 38 | 241 | 241
Charged off |  |  |  |  | (27)
Recoveries |  |  | 20 |  | 10
Provision for loan losses |  |  | 25 |  | (186)
Balance, end of year | 83 |  | 83 |  | 38
Collectively evaluated for impairment: |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 83 |  | 83 |  | 38
Collectively evaluated for impairment, Related loan balance | 13,683 |  | 13,683 |  | 11,907
Commercial | Real Estate Loan [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |
Balance, beginning of year |  |  | 389 | 283 | 283
Provision for loan losses |  |  |  |  | 106
Balance, end of year |  |  |  |  | 389
Individually evaluated for impairment: |  |  |  |  |
Individually evaluated for impairment, Related loan balance |  |  |  |  | 3,680
Collectively evaluated for impairment: |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance |  |  |  |  | 389
Collectively evaluated for impairment, Related loan balance |  |  |  |  | 70,341
Commercial | SBA PPP Loan [Member] |  |  |  |  |
Collectively evaluated for impairment: |  |  |  |  |
Collectively evaluated for impairment, Related loan balance | 17,367 |  | 17,367 |  |
Construction |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |
Balance, beginning of year |  |  | 11 | $ 4 | 4
Provision for loan losses |  |  | (4) |  | 7
Balance, end of year | 7 |  | 7 |  | 11
Collectively evaluated for impairment: |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 7 |  | 7 |  | 11
Collectively evaluated for impairment, Related loan balance | 1,983 |  | 1,983 |  | 3,317
Commercial Real Estate | Real Estate Loan [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |  |
Balance, beginning of year |  |  | 389 |  |
Provision for loan losses |  |  | (110) |  |
Balance, end of year | 279 |  | 279 |  | $ 389
Individually evaluated for impairment: |  |  |  |  |
Individually evaluated for impairment, Related loan balance | 4,569 |  | 4,569 |  |
Collectively evaluated for impairment: |  |  |  |  |
Collectively evaluated for impairment, Balance in allowance | 279 |  | 279 |  |
Collectively evaluated for impairment, Related loan balance | $ 64,772 |  | $ 64,772 |  |

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