v3.25.3
Subsequent Events - Additional Information (Details)
$ / shares in Units, $ in Thousands, ft² in Millions, $ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2025
CAD ($)
StorageProperty
Oct. 30, 2025
USD ($)
Oct. 29, 2025
USD ($)
$ / shares
shares
Oct. 01, 2025
USD ($)
ft²
Property
Segment
State
StorageProperty
shares
Nov. 30, 2025
USD ($)
May 31, 2025
StorageProperty
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Oct. 31, 2025
USD ($)
Property
Oct. 31, 2025
CAD ($)
Property
Sep. 04, 2025
$ / shares
Dec. 31, 2024
USD ($)
Subsequent Event [Line Items]                            
Consideration in cash             $ 400 $ 100 $ 800 $ 100        
Number of preferred units purchased | shares             1,000,000   1,000,000          
Redemption amount threshold period 90 days                          
Redemption period                     5 years 5 years    
Preferred stock price per share | $ / shares                         $ 25  
Distributions from Joint Ventures                 $ 74,800 $ 75,590        
Number of self storage facilities | StorageProperty           2                
Number of self storage facilities purchased | StorageProperty 5                          
Investments             $ 2,068,138   2,068,138         $ 1,795,567
Debt instrument fixed rate       4.53%                    
New York Preferred Investment                            
Subsequent Event [Line Items]                            
Number Of Real Estate Properties | Property                     1 1    
Percentage of investment fee                     1.00% 1.00%    
Percentage of redemption fee                     1.00% 1.00%    
Preferred stock, dividend rate, percentage 10.00%                          
Investments                     $ 4,800      
SST X Advisory Agreement                            
Subsequent Event [Line Items]                            
Investment in the operating partnership                 1,800          
Sale of property price                 7,900          
SST X Advisory Agreement | Series A Preferred Units                            
Subsequent Event [Line Items]                            
Number of preferred units purchased | shares     72,000                      
Preferred stock purchase consideration     $ 1,800                      
Preferred stock redemption description     Distributions are payable at a rate of: (a) 6% per annum from the date of issuance until the second anniversary after the date of issuance; (b) 7% per annum commencing the day following the second anniversary after the date of issuance until the third anniversary after the date of issuance; (c) 8% per annum commencing the day following the third anniversary after the date of issuance until the fourth anniversary after the date of issuance; and (d) 9% per annum thereafter.                      
Preferred stock price per share | $ / shares     $ 25                      
Percentage of investment fee     1.00%                      
Winter Garden Property | Orlando Florida | Forecast                            
Subsequent Event [Line Items]                            
Consideration transferred         $ 15,300                  
Argus Professional Storage Management, LLC                            
Subsequent Event [Line Items]                            
Consideration in cash             $ 100   $ 200          
Number Of Real Estate Properties | Property       225                    
Number Of States In Which Entity Operates | State       27                    
Area of Land | ft²       16.6                    
Deposits of units       $ 5,000                    
Numbers of units | Segment       100,000                    
Subsequent Event | RBC JV Term Loan III                            
Subsequent Event [Line Items]                            
Amortization period 30 years                          
Term loan $ 160                          
Percentage of joint venture property owned 50.00%                          
Value of secured obligations                       $ 80    
Maturity date Nov. 01, 2030                          
Fixed annual rate                     3.87% 3.87%    
Subsequent Event | SST X Advisory Agreement                            
Subsequent Event [Line Items]                            
Sale of property price   $ 7,900                        
Subsequent Event | Argus Professional Storage Management, LLC                            
Subsequent Event [Line Items]                            
Number of properties | StorageProperty       460                    
Upfront consideration       $ 21,100                    
Consideration in cash       $ 8,500                    
Consideration in units | shares       328,343                    
Potential earnout based on revenues       $ 11,000                    
Percentage of asset acquisition consideration payable in cash       75.00%                    
Percentage of asset acquisition consideration payable in OP units       25.00%                    
Number of properties covering the management regarding principal assets acquired | Property       225                    
Number of employees covering the management regarding principal assets acquired | Property       400