Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.20.2
Subsequent Events - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 6 Months Ended
Jul. 27, 2020
Jul. 02, 2020
Aug. 07, 2020
Jun. 30, 2020
Jun. 30, 2019
Subsequent Event [Line Items]          
Cash payment for property acquisition       $ 124,204 $ 95,819
Subsequent Event [Member]          
Subsequent Event [Line Items]          
Dividend declared, date   Jul. 02, 2020      
Dividend per common share   $ 1.07      
Dividend paid, date   Jul. 27, 2020      
Dividend record, date   Jul. 14, 2020      
Dividend paid $ 50,200        
Subsequent Event [Member] | Self-storage Facilities [Member]          
Subsequent Event [Line Items]          
Purchase price of business to be acquired     $ 13,700    
Subsequent Event [Member] | Warehouse Anywhere LLC [Member]          
Subsequent Event [Line Items]          
Cash payment for property acquisition   $ 2,000      
Percentage of ownership interest   100.00%