Quarterly report pursuant to Section 13 or 15(d)

Mortgages Payable and Debt Maturities - Summary of Mortgage Payable (Detail)

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Mortgages Payable and Debt Maturities - Summary of Mortgage Payable (Detail) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Mortgages payable $ 1,959 $ 1,993
5.99% Mortgage Notes Due May 1, 2026 [Member]    
Debt Instrument [Line Items]    
Mortgages payable $ 1,959 $ 1,993