Annual report pursuant to Section 13 and 15(d)

Investment in Joint Ventures - Additional Information (Detail)

v3.22.0.1
Investment in Joint Ventures - Additional Information (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
Property
Dec. 31, 2020
USD ($)
Facility
Property
Dec. 31, 2019
USD ($)
Schedule of Equity Method Investments [Line Items]      
Distributions from unconsolidated joint ventures $ 13,866 $ 14,098 $ 10,165
Cash payments for acquisition $ 1,514,684 520,943 393,298
Payments to acquire businesses and interest in affiliates   $ 3,404  
Number of storage facilities acquired | Property 112 40  
Operational Joint Ventures [Member]      
Schedule of Equity Method Investments [Line Items]      
Management and call center fee earned $ 8,200 $ 8,500 $ 8,900
191 III Holdings LLC ("191 III") [Member]      
Schedule of Equity Method Investments [Line Items]      
Total consideration acquired   $ 124,200  
Number Of joint ventures | Facility   6  
Distributions from unconsolidated joint ventures   $ 8,400  
Equity Method Investment Ownership Percentage   20.00%  
Urban Box Coralway Storage, LLC [Member]      
Schedule of Equity Method Investments [Line Items]      
Cash payments for acquisition   $ 7,800  
Payoff of mortgage loan   7,100  
Business Acquisitions Allocated Purchase Price   $ 3,400  
Ownership percentage acquired   15.00%  
Equity Method Investment Ownership Percentage   100.00%