Annual report pursuant to Section 13 and 15(d)

Mortgage Notes Payable and Line of Credit - Company's Mortgage Notes Payable and Line of Credit (Parenthetical) (Detail)

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Mortgage Notes Payable and Line of Credit - Company's Mortgage Notes Payable and Line of Credit (Parenthetical) (Detail)
12 Months Ended
Dec. 31, 2015
Property
Mortgages
Jun. 29, 2015
Debt Instrument [Line Items]    
Number of mortgage notes payable 44  
Libor rate 0.43%  
Libor rate description One month LIBOR was approximately 0.43%  
Weighted average interest rate on debt outstanding 4.75%  
Properties shared | Property 22  
Fixed Rate Mortgage Loans [Member]    
Debt Instrument [Line Items]    
Number of mortgage notes payable 44  
Maturity date of mortgage notes payable, start date Apr. 01, 2016  
Maturity date of mortgage notes payable, end date Jul. 01, 2045  
Fixed Rate Mortgage Loans [Member] | Minimum [Member]    
Debt Instrument [Line Items]    
Stated Interest Rates 3.75%  
Fixed Rate Mortgage Loans [Member] | Maximum [Member]    
Debt Instrument [Line Items]    
Stated Interest Rates 6.80%  
Variable Rate Mortgage Loans [Member]    
Debt Instrument [Line Items]    
Libor rate description Variable rate mortgage notes payable vary from one month LIBOR + 2.15% to one month LIBOR + 2.25%  
Variable Rate Mortgage Loans [Member] | Minimum [Member]    
Debt Instrument [Line Items]    
Libor rate 2.15%  
Variable Rate Mortgage Loans [Member] | Maximum [Member]    
Debt Instrument [Line Items]    
Libor rate 2.25%  
Mortgage Notes Payable [Member]    
Debt Instrument [Line Items]    
Stated Interest Rates   5.30%
Weighted average interest rate on debt outstanding 5.02%