Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Monthly Distributions Declared by Company's Board of Directors (Detail)

v3.5.0.2
Subsequent Events - Monthly Distributions Declared by Company's Board of Directors (Detail) - $ / shares
Sep. 30, 2016
Aug. 31, 2016
Aug. 02, 2016
Subsequent Event [Member] | Dividend Period One [Member]      
Subsequent Event [Line Items]      
Record Date     Jul. 22, 2016
Payment Date     Aug. 02, 2016
Distribution per Common Share     $ 0.04125
Scenario, Forecast [Member]      
Subsequent Event [Line Items]      
Distribution per Common Share $ 0.12375    
Scenario, Forecast [Member] | Dividend Period Two [Member]      
Subsequent Event [Line Items]      
Record Date   Aug. 22, 2016  
Payment Date   Aug. 31, 2016  
Distribution per Common Share   $ 0.04125  
Scenario, Forecast [Member] | Dividend Period Three [Member]      
Subsequent Event [Line Items]      
Record Date Sep. 21, 2016    
Payment Date Sep. 30, 2016    
Distribution per Common Share $ 0.04125