INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Hamilton Minuteman) (Details)		1 Months Ended		9 Months Ended
	Sep. 12, 2016 USD ($)	Jan. 31, 2007 USD ($)	Oct. 31, 2004 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2006 USD ($)	Sep. 30, 2004 USD ($) item
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Investments in joint venture				$ 8,970,289		$ 7,819,162
Distribution to the Partnership				2,810,776	$ 2,845,573
Outstanding amount of mortgage				$ 213,089,003		$ 194,500,820
Hamilton Minuteman
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Investments in joint venture								$ 5,075,000
Ownership interest (as a percent)								50.00%
Number of units | item								42
Cash contribution by the entity towards loan							$ 1,250,000
Purchase price of investments								$ 10,100,000
Amount returned to partnership			$ 3,775,000
Mortgages payable | Hamilton Minuteman
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Mortgage amount	$ 6,000,000
Distribution to the Partnership	385,000
Term of debt		10 years
Amount of mortgage paid off	5,158,000
Refinancing costs	$ 123,000
Interest rate (as a percent)	3.71%	5.67%
Period for which the entity is required to make interest only payments	15 years	5 years
Amortization period of debt		30 years
Borrowings		$ 5,500,000	$ 8,025,000