Mortgage Loan and Note Receivable - Additional Information (Detail) (USD $)	1 Months Ended
	Jun. 30, 2012	Dec. 09, 2010	Oct. 31, 2012 Acquired Entities sqft
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage loan receivable		$ 2,000,000
Area of retail shopping center acquired			68,000
Purchase price of net of a long term Assets			13,100,000
Amount of note receivable to an affiliate	$ 750,000
Interest rate for the note receivable	10.00%
Maturity date	June 2014