BUSINESS COMBINATIONS AND ACQUIRED INTANGIBLES (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Northfield Distribution Center [Domain] sqft Integer	Jun. 30, 2013 Northfield Distribution Center [Domain] Leases, Acquired-in-Place [Member]	Jun. 30, 2013 Northfield Distribution Center [Domain] Leases, Above Market [Member]	Jun. 30, 2013 Northfield Distribution Center [Domain] Below Market Leases [Member]	Dec. 31, 2012 Madison Distribution Center, Wiegman Distribution Center II and Valwood Distribution Center [Member]	Dec. 31, 2012 Madison Distribution Center, Wiegman Distribution Center II and Valwood Distribution Center [Member] Leases, Acquired-in-Place [Member]	Dec. 31, 2012 Madison Distribution Center, Wiegman Distribution Center II and Valwood Distribution Center [Member] Above Market Leases [Member]	Dec. 31, 2012 Madison Distribution Center, Wiegman Distribution Center II and Valwood Distribution Center [Member] Below Market Leases [Member]
Business Acquisition [Line Items]
Amortization expense for lease intangibles	$ 999,000	$ 977,000	$ 1,777,000	$ 2,046,000
Above and below market leases Increase (decrease) rental Income	21,000	(114,000)	(25,000)	(234,000)
Total cost of properties purchased					69,952,000				51,750,000
Amount of total cost allocated to real estate properties					63,184,000				48,934,000
Amount of total cost allocated to land					12,471,000				7,435,000
Intangible acquired associated with purchase of Real Estate						8,156,000	158,000	1,546,000		3,305,000	244,000	733,000
Acquisition-related costs expensed	$ 138,000	$ 0	$ 167,000	$ 19,000
Acquired property number of buildings					8
Property acquired square feet					788,000