Quarterly report pursuant to Section 13 or 15(d)

Investment in Storage Facilities and Intangible Assets - Additional Information (Detail)

v3.21.2
Investment in Storage Facilities and Intangible Assets - Additional Information (Detail)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
USD ($)
$ / shares
Mar. 31, 2021
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
Property
$ / shares
Jun. 30, 2020
USD ($)
Property
Investment Holdings [Line Items]          
Number of storage facilities acquired | Property       33 6
Cash payment for property acquisition       $ 531,109  
Received return on investment       6,772 $ 6,086
Net other liabilities assumed       $ (2,600)  
Amortization period for in-place customer leases on a straight-line basis       12 months  
Increase in depreciation expense due to facility replacement $ 1,100     $ 2,500  
Accelerated depreciation reduced basic and diluted earnings per share | $ / shares $ 0.01     $ 0.03  
Depreciation and Amortization Expense [Member]          
Investment Holdings [Line Items]          
Amortization expense related to in-place customer leases $ 2,700   $ 1,500 $ 4,700 $ 2,800
SNL Orix Merrick [Member]          
Investment Holdings [Line Items]          
Company common ownership interest   5.00%      
Cash payment for property acquisition   $ 47,900      
Received return on investment   $ 800