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RENTAL PROPERTIES (Details 3) (USD $) | 12 Months Ended |  | 0 Months Ended | 1 Months Ended | 3 Months Ended |  | 0 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | May 31, 2013 | Jul. 15, 2013 Hamilton Green item | May 31, 2013 Nashoba Apartments L.P. Residential Apartments Acton, Massachusetts | Jun. 30, 2013 Nashoba Apartments L.P. Residential Apartments Acton, Massachusetts | Dec. 31, 2013 Mortgages payable | Dec. 20, 2013 Mortgages payable Hamilton Green | May 18, 2011 Avon Street Apartments Residential apartment complex item | Jul. 27, 2011 Battle Green Apartments Mortgages payable | Jun. 02, 2011 Battle Green Apartments Residential apartment complex item | Jul. 27, 2011 Battle Green Apartments Harold Brown Mortgages payable | Jun. 02, 2011 Battle Green Apartments Harold Brown Mortgages payable | Dec. 31, 2011 Battle Green Apartments Harold Brown Mortgages payable
RENTAL PROPERTIES |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of units |  |  |  |  | 193 |  |  |  |  | 66 |  | 48 |  |  |
Sales price of real estate properties |  |  |  |  |  | $ 4,300,000 | $ 4,300,000 |  |  | $ 8,750,000 |  |  |  |  |
Gain on sale of property |  |  |  |  |  | 3,679,000 |  |  |  | 7,700,000 |  |  |  |  |
Net proceeds from sale of property | 2,138,978 |  | 8,297,928 |  |  |  |  |  |  | 5,444,000 |  |  |  |  |
Purchase price of real estate properties |  |  |  |  | 62,500,000 |  |  |  |  |  |  | 10,000,000 |  |  |
Amount of new loan |  |  |  |  |  |  |  |  | 38,500,000 |  | 5,000,000 |  |  | 3,998,573 |
Interest rate (as a percent) |  |  |  |  |  |  |  |  | 4.67% |  | 4.95% |  |  | 6.00% |
Term of debt |  |  |  |  |  |  |  |  | 15 years |  |  |  |  | 4 years |
Notice period demanding early payment |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 months |
Amortization period of debt |  |  |  |  |  |  |  |  | 30 years |  | 30 years |  |  |  |
Deferred financing cost associated with mortgage |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  |  |
Effective interest rate (as a percent) | 5.52% |  |  |  |  |  |  | 4.93% |  |  | 5.07% |  |  |  |
Repayment of debt |  |  |  |  |  |  |  |  | 40,000,000 |  |  |  | 3,998,573 |  |
Amount returned to partnership |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |
Interest paid | 8,062,000 | 7,776,000 | 8,011,000 |  |  |  |  |  |  |  |  |  |  |  | 38,123
Amount of sale proceeds transferred to Investment Property |  |  |  | 2,100,000 |  |  |  |  |  |  |  |  |  |  |
Purchase price allocated to the value of the in-place leases |  |  |  |  | 1,656,000 |  |  |  |  |  |  |  |  |  |
Purchase price allocated to the value of the tenant relationships |  |  |  |  | 96,000 |  |  |  |  |  |  |  |  |  |
Amortization period of value of the in-place leases |  |  |  |  | 12 months |  |  |  |  |  |  |  |  |  |
Amortization period of value of the tenant relationships |  |  |  |  | 36 months |  |  |  |  |  |  |  |  |  |
Short term finance for real estate properties |  |  |  |  | 40,000,000 |  |  |  |  |  |  |  |  |  |
Proceeds from sale of discontinued operations |  |  |  |  | 2,100,000 |  |  |  |  |  |  |  |  |  |
Closing costs associated with financing |  |  |  |  | 38,000 |  |  |  | 346,000 |  |  |  |  |  |
Period for which the entity is required to make interest only payments |  |  |  |  |  |  |  |  | 2 years |  |  |  |  |  |
Additional capital required for refinancing |  |  |  |  |  |  |  |  | $ 1,846,000 |  |  |  |  |  |

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