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MORTGAGE NOTES PAYABLE (Facility Agreement Properties) (Details) - USD ($) | Jun. 16, 2022 | Nov. 30, 2021 | Jun. 15, 2022 | Nov. 29, 2021
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Debt Instrument [Line Items] |  |  |  |
Mortgage amount | $ 80,284,000 | $ 156,000,000 | $ 37,065,000 | $ 65,305,000
Deferred Finance Costs | 854,130 | 1,676,088 |  |
Mortgage prepayment penalties | 834,544 | 2,745,979 |  |
Clovelly Apartments L.P. Residential Apartments Nashua, New Hampshire |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount |  | 11,214,000 |  | 4,160,000
Deferred Finance Costs |  | 121,817 |  |
Mortgage prepayment penalties |  | 167,141 |  |
Commonwealth 1137 L.P. Residential Apartments Boston, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount |  | 5,440,000 |  | 3,750,000
Deferred Finance Costs |  | 60,504 |  |
Mortgage prepayment penalties |  | 151,314 |  |
Commonwealth 1144 L.P. Residential Apartments Boston, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount |  | 32,325,000 |  | 14,780,000
Deferred Finance Costs |  | 340,007 |  |
Mortgage prepayment penalties |  | 592,728 |  |
Executive Apartments L.P. Residential Apartments Framingham, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount |  | 8,190,000 |  | 2,415,000
Deferred Finance Costs |  | 89,333 |  |
Mortgage prepayment penalties |  | 96,434 |  |
North Beacon 140 L.P. Residential Units Boston, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount |  | 12,683,000 |  | 6,937,000
Deferred Finance Costs |  | 135,813 |  |
Mortgage prepayment penalties |  | 277,003 |  |
Olde English Apartments L.P. Residential Apartments Lowell, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount |  | 9,608,000 |  | 3,080,000
Deferred Finance Costs |  | 104,345 |  |
Mortgage prepayment penalties |  | 123,956 |  |
Redwood Hills L.P. Residential Units Worcester, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount |  | 17,105,000 |  | 6,743,000
Deferred Finance Costs |  | 188,406 |  |
Mortgage prepayment penalties |  | 271,204 |  |
River Drive L.P. Residential Apartments Danvers, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount |  | 9,543,000 |  | 3,465,000
Deferred Finance Costs |  | 104,605 |  |
Mortgage prepayment penalties |  | 139,218 |  |
Highland Street Apartments, L.P. Residential Apartments Lowell, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount |  | 3,960,000 |  | 1,050,000
Deferred Finance Costs |  | 45,076 |  |
Mortgage prepayment penalties |  | 41,928 |  |
WCB Associates LLC Residential Apartments Brockton, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount |  | 19,266,000 |  | 7,000,000
Deferred Finance Costs |  | 204,586 |  |
Mortgage prepayment penalties |  | 408,873 |  |
Hamilton Oaks Associates LLC Residential Apartments Brockton, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount |  | 26,666,000 |  | $ 11,925,000
Deferred Finance Costs |  | 281,596 |  |
Mortgage prepayment penalties |  | 476,180 |  |
NERA Dean Street Associates, LLC |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount | 10,322,000 |  | 5,687,000 |
Deferred Finance Costs | 109,841 |  |  |
Mortgage prepayment penalties | 160,943 |  |  |
School St Assoc LLC Residential Apartments Framingham, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount | 26,993,000 |  | 13,178,000 |
Deferred Finance Costs | 287,159 |  |  |
Mortgage prepayment penalties | 171,676 |  |  |
Westgate Apartments LLC Residential Apartments Woburn, Massachusetts |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount | 4,494,000 |  | 2,500,000 |
Deferred Finance Costs | 47,831 |  |  |
Mortgage prepayment penalties | 100,211 |  |  |
Courtyard at Westgate |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount | 38,475,000 |  | $ 15,700,000 |
Deferred Finance Costs | 409,299 |  |  |
Mortgage prepayment penalties | 401,714 |  |  |
Facility Agreement |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage amount | 80,284,000 | 156,000,000 |  |
Mortgage prepayment penalties | $ 834,000 | $ 2,700,000 |  |

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