CASH FLOW INFORMATION (Details) (USD $)	12 Months Ended			24 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Cash paid for interest	$ 8,791,000	$ 8,062,000	$ 7,776,000
Cash paid for state income taxes	51,000	60,000	48,000
Hamilton Green
Non-cash financing activities in connection with acquisition		38,500,000
NERA Dean Street Apartments And Westgate Apartments [Member]
Non-cash financing activities in connection with acquisition				$ 7,077,000