Summary of Purchase Price Allocation for Real Estate Related Assets Acquired (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2021
Jun. 28, 2019
Business Acquisition [Line Items]    
Buildings $ 371,507,610 $ 5,389,000
Construction in progress 1,467,090  
Investments in real estate joint ventures 17,495,254  
Intangibles 21,461,692  
'Total assets acquired 411,931,646 [1] $ 60,267,071
2021 Revenue [2] 26,276,705  
2021 Property Operating Income [2],[3] $ 18,063,614  
SST IV Merger    
Business Acquisition [Line Items]    
Acquisition Date Mar. 17, 2021  
Buildings $ 324,344,636  
Construction in progress 1,467,090  
Investments in real estate joint ventures 17,495,254  
Intangibles 20,052,449  
'Total assets acquired [1] 363,359,429  
2021 Revenue [2] 24,956,689  
2021 Property Operating Income [2],[3] $ 17,312,323  
Iroquois Shore Road- Oakville III    
Business Acquisition [Line Items]    
Acquisition Date Apr. 16, 2021  
Buildings $ 20,061,045  
Intangibles 332,840  
'Total assets acquired [1] 20,393,885  
2021 Revenue [2] 568,351  
2021 Property Operating Income [2],[3] $ 269,764  
Van Buren Blvd - Riverside III    
Business Acquisition [Line Items]    
Acquisition Date May 27, 2021  
Buildings $ 10,216,645  
Intangibles 450,145  
'Total assets acquired [1] 10,666,790  
2021 Revenue [2] 509,698  
2021 Property Operating Income [2],[3] $ 330,084  
Alameda Parkway- Lakewood    
Business Acquisition [Line Items]    
Acquisition Date Oct. 19, 2021  
Buildings $ 16,885,284  
Intangibles 626,258  
'Total assets acquired [1] 17,511,542  
2021 Revenue [2] 241,967  
2021 Property Operating Income [2],[3] $ 151,443  
[1] The allocations noted above are based on a determination of the relative fair value of the total consideration provided and represent the amount paid including capitalized acquisition costs.
[2] The operating results of the self storage properties acquired during the year ended December 31, 2021 were included in our consolidated statements of operations since their respective acquisition date. Such amounts do not include activity from our investments in real estate joint ventures, which are included in Other in our consolidated statements of Operations. For additional information see Note 4 - Investments in Unconsolidated Real Estate Ventures.
[3] Net operating income excludes corporate general and administrative expenses, interest expenses, depreciation, amortization and acquisition expenses.