Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Investment in Storage Facilities and Intangible Assets - Additional Information (Detail)
3 Months Ended 12 Months Ended
Mar. 31, 2019
USD ($)
Property
$ / shares
Mar. 31, 2018
USD ($)
$ / shares
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Investment Holdings [Line Items]        
Number of storage facilities acquired | Property 2      
Payments to acquire businesses and interest in affiliates $ 10,715,000      
Consideration paid, Cash Paid $ 55,624,000      
Deposits paid at the time of contract       $ 200,000
Amortization period for in-place customer leases on a straight-line basis 12 months      
Amortization expense related to in-place customer leases $ 300,000 $ 0    
Increase in depreciation expense due to facility replacement $ 700,000 $ 300,000    
Accelerated depreciation reduced basic and diluted earnings per share | $ / shares $ 0.02 $ 0.01    
Scenario, Forecast [Member]        
Investment Holdings [Line Items]        
Net other liabilities assumed     $ 132,000  
Review Avenue Partners, LLC [Member]        
Investment Holdings [Line Items]        
Equity method investment ownership percentage acquired 60.00%      
Payments to acquire businesses and interest in affiliates $ 10,700,000