Real Estate (Details) (USD $)	9 Months Ended		0 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 28, 2013 Anthem Marketplace [Member] sqft acre	Jun. 19, 2013 Mercado at Scottsdale Ranch [Member] sqft	Mar. 28, 2013 Headquarters Village Shopping Center [Member] sqft	Dec. 28, 2012 Shops at Pecos Ranch [Member] sqft	Sep. 21, 2012 Village Square at Dana Park [Member] sqft	Sep. 21, 2012 Village Square at Dana Park Adjacent Parcel [Member] acre	Sep. 21, 2012 Fountain Square [Member] sqft	Aug. 08, 2012 Paradise Plaza [Member] sqft	May 29, 2012 Shops at Pinnacle Peak [Member] sqft	Jun. 19, 2013 Interest Rate Supplement [Member] Mercado at Scottsdale Ranch [Member]	Aug. 08, 2012 Prime Rate Less 2.00% Due 2017 [Member] Floating Rate Notes [Member] Paradise Plaza [Member]
Real Estate [Line Items]
Payments to acquire property	$ 58,403,000	$ 79,400,000	$ 23,300,000	$ 9,300,000	$ 25,700,000	$ 19,000,000	$ 46,500,000	$ 4,000,000	$ 15,400,000	$ 7,100,000	$ 6,400,000
Gross leasable area (in square feet)			113,293	118,730	89,134	78,767	310,979		118,209	125,898	41,530
Property percentage occupied			100.00%	100.00%	100.00%	100.00%	71.00%		76.00%	100.00%	76.00%
Area of land (in acres)			0.83					4.7
Property acquisitions, purchase price				21,300,000						16,300,000
Face amount of debt				$ 11,100,000								$ 900,000	$ 9,200,000