Schedule of Activity in Real Estate Facilities (Parenthetical) (Detail)
12 Months Ended
Dec. 31, 2021
USD ($)
ft²
Dec. 31, 2020
USD ($)
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]    
Construction in process placed in service   $ 13,000,000
Improvements and additions [1] $ 12,151,893  
Florida | Acquisition of Self Storage Facility Riverview    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]    
Improvements and additions $ 2,300,000  
Rentable area added to existing self storage facility | ft² 25,400  
Number of units added to existing self storage facility | ft² 150  
[1] Included herein is an addition to our Riverview, Florida property of approximately $2.3 million, which added approximately 25,400 net rentable square feet and approximately 150 additional units, and opened in June of 2021. The remainder consists primarily of solar panel installations, LED lighting conversions, and other general capital improvements.