LEASE OBLIGATIONS (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Leased Assets [Line Items]
Number of shopping centers with land leases	8
Operating Leases, Future Minimum Payments Due [Abstract]
2015	$ 2,756,000
2016	1,761,000
2017	6,336,000
2018	2,376,000
2019	2,346,000
Thereafter	19,424,000
Total	34,999,000
Minimum [Member]
Operating Leased Assets [Line Items]
Period of lease term	23 years
Maximum [Member]
Operating Leased Assets [Line Items]
Period of lease term	71 years
Ground Rent [Member]
Operating Leased Assets [Line Items]
Ground lease expense	1,800,000	1,800,000	1,700,000
Properties Under Development [Member]
Operating Leased Assets [Line Items]
Rent expense capitalized	800,000	800,000	800,000
White Plains Corporate Office [Member]
Operating Leased Assets [Line Items]
Ground lease expense	$ 1,500,000	$ 1,400,000	$ 1,400,000