ACQUISITIONS (Additional Information) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			12 Months Ended
	Nov. 30, 2015	Dec. 31, 2015	Sep. 30, 2015	Mar. 31, 2015	Dec. 31, 2015
Business Acquisition [Line Items]
Dividend rate	5.00%
Acquired Below Market Lease Intangibles					$ (13,115)
Mt. Shasta Mall [Member]
Business Acquisition [Line Items]
Acquired Below Market Lease Intangibles					(1,813)
Fig Garden Village [Member]
Business Acquisition [Line Items]
Acquired Below Market Lease Intangibles					(2,907)
The Shoppes at Carlsbad [Member]
Business Acquisition [Line Items]
Acquired Below Market Lease Intangibles					(8,395)
Land
Business Acquisition [Line Items]
Purchase Price					76,035
Land | Mt. Shasta Mall [Member]
Business Acquisition [Line Items]
Purchase Price					7,809
Land | Fig Garden Village [Member]
Business Acquisition [Line Items]
Purchase Price					18,774
Land | The Shoppes at Carlsbad [Member]
Business Acquisition [Line Items]
Purchase Price					49,452
Building and improvements
Business Acquisition [Line Items]
Purchase Price					229,207
Building and improvements | Mt. Shasta Mall [Member]
Business Acquisition [Line Items]
Purchase Price					38,008
Building and improvements | Fig Garden Village [Member]
Business Acquisition [Line Items]
Purchase Price					79,528
Building and improvements | The Shoppes at Carlsbad [Member]
Business Acquisition [Line Items]
Purchase Price					111,671
Other
Business Acquisition [Line Items]
Purchase Price					988
Other | Mt. Shasta Mall [Member]
Business Acquisition [Line Items]
Purchase Price					302
Other | Fig Garden Village [Member]
Business Acquisition [Line Items]
Purchase Price					(636)
Other | The Shoppes at Carlsbad [Member]
Business Acquisition [Line Items]
Purchase Price					1,322
Leases, Acquired-in-Place
Business Acquisition [Line Items]
Purchase Price					22,986
Leases, Acquired-in-Place | Mt. Shasta Mall [Member]
Business Acquisition [Line Items]
Purchase Price					3,779
Leases, Acquired-in-Place | Fig Garden Village [Member]
Business Acquisition [Line Items]
Purchase Price					7,366
Leases, Acquired-in-Place | The Shoppes at Carlsbad [Member]
Business Acquisition [Line Items]
Purchase Price					11,841
Above-market tenant leases, net
Business Acquisition [Line Items]
Purchase Price					8,999
Above-market tenant leases, net | Mt. Shasta Mall [Member]
Business Acquisition [Line Items]
Purchase Price					915
Above-market tenant leases, net | Fig Garden Village [Member]
Business Acquisition [Line Items]
Purchase Price					3,975
Above-market tenant leases, net | The Shoppes at Carlsbad [Member]
Business Acquisition [Line Items]
Purchase Price					4,109
Retail Site [Member]
Business Acquisition [Line Items]
Purchase Price					$ 325,100
Retail Site [Member] | Mt. Shasta Mall [Member]
Business Acquisition [Line Items]
Purchase Price				$ 49,000
Retail Site [Member] | Fig Garden Village [Member]
Business Acquisition [Line Items]
Purchase Price			$ 106,100
Retail Site [Member] | The Shoppes at Carlsbad [Member]
Business Acquisition [Line Items]
Dividend rate	5.00%
Purchase Price		$ 170,000