Quarterly report pursuant to sections 13 or 15(d)

Mortgage Loans Payable - Additional Information (Detail)

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Mortgage Loans Payable - Additional Information (Detail) (Shoppes At Tj Maxx [Member], Subsidiaries [Member], USD $)
9 Months Ended
Sep. 30, 2012
Shoppes At Tj Maxx [Member] | Subsidiaries [Member]
 
Participating Mortgage Loans [Line Items]  
Mortgage term loan, maturity date September, 2012
Principal amount of loan $ 6,400,000
Net loan fees 380,000
Interest rate on loan 6.00%
Effective interest rate on loan 15.80%
Maturity period of loan April 19, 2013
Interest payable $ 32,000