OTHER ASSETS & DEPOSIT AND ESCROW HELD FOR ACQUISITION OF REAL ESTATE (Details) (USD $)	Jun. 30, 2013	May 29, 2013	Dec. 31, 2012
OTHER ASSETS & DEPOSIT AND ESCROW HELD FOR ACQUISITION OF REAL ESTATE
Security deposits	$ 1,962,000		$ 1,919,000
Escrow deposits to fund future capital improvements	132,000		420,000
Financing fees, net	1,771,000		1,136,000
Accumulated amortization on financing and leasing fees	739,000		772,000
Amount of sale proceeds transferred to Investment Property	2,100,000	2,100,000
Deposits in connection with the purchase of Windsor Green Apartments in Andover, Massachusetts transferred to investment property	$ 2,000,000