Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION AND NATURE OF OPERATIONS (Details)

v3.22.2
ORGANIZATION AND NATURE OF OPERATIONS (Details)
storage_unit in Thousands, ft² in Millions
 6 Months Ended
Jun. 30, 2022
ft²
storage_unit
state
property
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 1,076
Number of states in which self storage properties are located | state 42
Total rentable square feet in self storage properties | ft² 69.9
Number of storage units | storage_unit 549
Self storage properties 514
Self storage properties, remaining 378
2016 Joint Venture  
Schedule of Equity Method Investments [Line Items]  
Company's equity interest in unconsolidated real estate ventures (percent) 25.00%
2018 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 892
Number of states in which self storage properties are located | state 39
Total rentable square feet in self storage properties | ft² 56.4
Number of storage units | storage_unit 439
Unconsolidated properties | Joint venture | Unconsolidated real estate ventures  
Schedule of Equity Method Investments [Line Items]  
Number of self storage properties 184
Number of states in which self storage properties are located | state 21
Total rentable square feet in self storage properties | ft² 13.4
Number of storage units | storage_unit 111
Unconsolidated properties | Joint venture | 2016 Joint Venture  
Schedule of Equity Method Investments [Line Items]  
Number of self storage properties 81
Number of states in which self storage properties are located | state 13
Total rentable square feet in self storage properties | ft² 5.6
Number of storage units | storage_unit 47
Unconsolidated properties | Joint venture | 2018 Joint Venture  
Schedule of Equity Method Investments [Line Items]  
Number of self storage properties 103
Number of states in which self storage properties are located | state 17
Total rentable square feet in self storage properties | ft² 7.8
Number of storage units | storage_unit 64