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RENTAL PROPERTIES (Mill Street) (Details) | Dec. 20, 2019 USD ($) item | Dec. 31, 2019 item | Dec. 31, 2018 USD ($) item | Dec. 31, 2017 item
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RENTAL PROPERTIES |  |  |  |
Number of units | item |  | 913 | 913 | 913
Line of credit |  |  | $ 18,000,000 |
Subsequent Advance |  |  |  |
RENTAL PROPERTIES |  |  |  |
Loan amount | $ 4,000,000 |  |  |
Mill Street Gardens Residential Apartments Woburn Massachusetts |  |  |  |
RENTAL PROPERTIES |  |  |  |
Number of units | item | 181 |  |  |
Purchase price of real estate properties | $ 59,550,000 |  |  |
Closing costs associated with financing | 237,000 |  |  |
Line of credit | 18,000,000 |  |  |
Cash from reserves | 10,550,000 |  |  |
Loan amount | 31,000,000 |  |  |
Purchase price allocated to the value of the in-place leases | 1,282,000 |  |  |
Purchase price allocated to the value of the tenant relationships | $ 136,000 |  |  |
Amortization period of value of the in-place leases | 12 months |  |  |
Amortization period of value of the tenant relationships | 36 months |  |  |
Mill Street Gardens Residential Apartments Woburn Massachusetts | Maximum |  |  |  |
RENTAL PROPERTIES |  |  |  |
Loan amount | $ 35,000,000 |  |  |
Mill Street Gardens Residential Apartments Woburn Massachusetts | Initial Advance |  |  |  |
RENTAL PROPERTIES |  |  |  |
Loan amount | $ 31,000,000 |  |  |
Interest rate (as a percent) | 3.586% |  |  |
Mill Street Gardens Residential Apartments Woburn Massachusetts | Subsequent Advance |  |  |  |
RENTAL PROPERTIES |  |  |  |
Loan amount | $ 4,000,000 |  |  |
Interest rate (as a percent) | 3.50% |  |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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