Quarterly report pursuant to Section 13 or 15(d)

Mortgage Notes Payable, Line of Credit and Term Loan Facility - Additional Information (Detail)

v3.4.0.3
Mortgage Notes Payable, Line of Credit and Term Loan Facility - Additional Information (Detail)
 3 Months Ended
Oct. 05, 2015
USD ($)
Mar. 31, 2016
USD ($)
Property
Mortgages
Lenders
Mar. 31, 2015
USD ($)
Dec. 31, 2015
USD ($)
Aug. 31, 2013
USD ($)
Debt Instrument [Line Items]          
Number of mortgage notes payable | Mortgages   43      
Number of properties collateralized in mortgage notes payable | Property   97      
Net book value of collateralized mortgage properties   $ 638,500,000      
Number of long-term mortgages issued | Mortgages   1      
Number of properties to issue collateralized mortgage notes payable | Property   4      
Payments of deferred financing costs   $ 380,000 $ 216,000    
Fair value of mortgage notes payable outstanding   454,500,000      
Line of credit facility, maximum borrowing capacity $ 85,000,000 $ 150,000,000     $ 100,000,000
Line of credit, maturity date 2019-08        
Line of credit facility, percentage of extension fee on initial maturity   0.25%      
Number of lenders added | Lenders   3      
Cost for modification of the credit facility agreement   $ 500,000      
Borrowings under line of credit   $ 42,465,000   $ 44,591,000  
Line of credit at an interest rate   2.92%      
Letters of credit, outstanding   $ 3,000,000      
Weighted average interest rate on debt outstanding   4.63%      
Line of credit facility, maximum additional amount drawn   $ 7,200,000      
Five Year Term Loan Facility [Member]          
Debt Instrument [Line Items]          
Line of credit facility, maximum borrowing capacity   $ 25,000,000      
Line of credit, maturity date   2020-10      
Line of credit facility, percentage of extension fee on initial maturity   0.05%      
Letter of Credit [Member]          
Debt Instrument [Line Items]          
Weighted average interest rate on debt outstanding   2.50%      
Mortgage Notes Payable [Member]          
Debt Instrument [Line Items]          
Number of properties collateralized in mortgage notes payable | Property   75      
Recourse amount of mortgage notes payable   $ 2,900,000      
Percentage of debt recourse   0.60%      
Carrying value of mortgage notes payable outstanding, exclusive of premiums, discounts and deferred financing costs   $ 455,300,000      
Weighted average interest rate on debt outstanding   4.89%      
Mortgage Notes Payable [Member] | LIBOR [Member]          
Debt Instrument [Line Items]          
LIBOR Cap   3.00%