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Segment Disclosures - Summary of Total Assets by Segment (Parenthetical) (Detail) - USD ($) | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2020
--- | --- | --- | ---
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 | 52,200,000 |
Accumulated impairment charges to goodwill | 0 | 0 |
Managed REIT Platform |  |  |
Segment Reporting Asset Reconciling Item [Line Items] |  |  |
Goodwill | $ 1,400,000 | $ 1,400,000 |
Accumulated impairment charges to goodwill |  |  | $ 24,700,000

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