v3.25.3
Segment Disclosures - Additional Information (Detail)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
Segment
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Segment Reporting Information [Line Items]          
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]     srt:ChiefExecutiveOfficerMember    
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description     Our CODM and other management regularly evaluate performance based upon segment operating income (“SOI”).    
Segment Reporting, Expense Information Used by CODM, Description     On a quarterly basis, our CODM considers budget-to-actual and period-to-period variances when evaluating company and segment performance in addition to other interim reviews.    
Number of reportable business segments | Segment     2    
Assets [1] $ 2,391,279   $ 2,391,279   $ 2,042,067
Income (loss) from operations 12,776 $ 17,700 40,279 $ 51,377  
Self Storage          
Segment Reporting Information [Line Items]          
Assets [2] 2,206,364   2,206,364   1,915,303
Income (loss) from operations 21,726 23,297 65,784 68,870  
Self Storage | Canada          
Segment Reporting Information [Line Items]          
Assets 254,000   254,000   155,000
Revenues 6,800 $ 5,800 18,300 16,900  
Corporate and Other          
Segment Reporting Information [Line Items]          
Assets 66,881   66,881   63,064
Corporate and Other | Canada | J V Properties          
Segment Reporting Information [Line Items]          
Assets $ 34,900   34,900   $ 32,800
Income (loss) from operations     $ (400) $ (1,100)  
[1] Other than our investments in and advances to Managed REITs and our investments in JV Properties, substantially all of our investments in real estate facilities and intangible assets as well as our capital expenditures for the nine months and year ended September 30, 2025 and December 31, 2024, respectively, were associated with our self storage platform. Please see Note 3 – Real Estate of the Notes to the Consolidated Financial Statements for additional detail.
[2] Included in the assets of the Self Storage segment as of September 30, 2025 and December 31, 2024 was approximately $52.2 million of goodwill. Additionally, as of September 30, 2025 and December 31, 2024, there were no accumulated impairment charges to goodwill within the Self Storage segment.