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Segment Disclosures - Summary of Total Assets by Segment (Parenthetical) (Detail) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Segment Reporting Asset Reconciling Item [Line Items]    
Goodwill $ 53,643,331 $ 53,643,331
Self Storage    
Segment Reporting Asset Reconciling Item [Line Items]    
Goodwill 52,200,000 49,800,000
Managed REIT Platform    
Segment Reporting Asset Reconciling Item [Line Items]    
Goodwill 1,400,000 3,900,000
Accumulated impairment charges to goodwill $ 24,700,000 $ 24,700,000