Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION AND NATURE OF OPERATIONS (Details)

v3.22.2.2
ORGANIZATION AND NATURE OF OPERATIONS (Details)
storage_unit in Thousands, ft² in Millions
 9 Months Ended
Sep. 30, 2022
ft²
state
property
storage_unit
metropolitan_statistical_area
Schedule of Equity Method Investments [Line Items]  
Number of top metropolitan statistical areas for focus of operations | metropolitan_statistical_area 100
Number of self storage properties 1,100
Number of states in which self storage properties are located | state 42
Total rentable square feet in self storage properties | ft² 71.5
Number of storage units | storage_unit 562
Self storage properties 531
Self storage properties, remaining 384
2018 Joint Venture  
Schedule of Equity Method Investments [Line Items]  
Company's equity interest in unconsolidated real estate ventures (percent) 25.00%
2016 Joint Venture  
Schedule of Equity Method Investments [Line Items]  
Company's equity interest in unconsolidated real estate ventures (percent) 25.00%
Consolidated properties  
Schedule of Equity Method Investments [Line Items]  
Number of self storage properties 915
Number of states in which self storage properties are located | state 39
Total rentable square feet in self storage properties | ft² 58.1
Number of storage units | storage_unit 451
Unconsolidated properties | Joint venture | Unconsolidated real estate ventures  
Schedule of Equity Method Investments [Line Items]  
Number of self storage properties 185
Number of states in which self storage properties are located | state 21
Total rentable square feet in self storage properties | ft² 13.5
Number of storage units | storage_unit 111