Quarterly report pursuant to Section 13 or 15(d)

Mortgage Notes Payable and Credit Facility - Company's Mortgage Notes Payable and Line of Credit Additional Information (Detail)

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Mortgage Notes Payable and Credit Facility - Company's Mortgage Notes Payable and Line of Credit Additional Information (Detail)
 3 Months Ended
Oct. 27, 2017
Mar. 31, 2019
mortgage
property
Debt Instrument [Line Items]    
Weighted average interest rate on debt outstanding (as percent)   4.69%
Encumbered properties   101
LIBOR    
Debt Instrument [Line Items]    
Spread on LIBOR (as percent) 2.75%  
Variable rate at period end (as percent)   2.49%
Fixed rate mortgage loans    
Debt Instrument [Line Items]    
Stated interest rate (as percent)   3.86%
Encumbered properties   50
Fixed rate mortgage loans | Minimum    
Debt Instrument [Line Items]    
Stated interest rate (as percent)   3.55%
Fixed rate mortgage loans | Maximum    
Debt Instrument [Line Items]    
Stated interest rate (as percent)   6.63%
Mortgage notes payable    
Debt Instrument [Line Items]    
Number of mortgage notes payable | mortgage   48
Maturity date of mortgage notes payable, start date   Apr. 22, 2019
Maturity date of mortgage notes payable, end date   Jul. 01, 2045
Weighted average interest rate on debt outstanding (as percent)   4.60%
Encumbered properties   68
Variable rate mortgage loans    
Debt Instrument [Line Items]    
Encumbered properties   18
Variable rate mortgage loans | Minimum | LIBOR    
Debt Instrument [Line Items]    
Spread on LIBOR (as percent)   2.25%
Variable rate mortgage loans | Maximum | LIBOR    
Debt Instrument [Line Items]    
Spread on LIBOR (as percent)   2.75%
Variable rate revolving credit facility | Revolving credit facility    
Debt Instrument [Line Items]    
Encumbered properties   33
Variable rate revolving credit facility | LIBOR | Revolving credit facility    
Debt Instrument [Line Items]    
Spread on LIBOR (as percent)   1.75%