Summary of Total Assets by Segment (Parenthetical) (Detail) - USD ($) |
Sep. 30, 2020 |
Dec. 31, 2019 |
Jun. 28, 2019 |
|---|---|---|---|
| Segment Reporting Asset Reconciling Item [Line Items] | |||
| Goodwill | $ 53,643,331 | $ 78,372,980 | $ 78,372,980 |
| Self Storage | |||
| Segment Reporting Asset Reconciling Item [Line Items] | |||
| Goodwill | 45,300,000 | ||
| Managed REIT Platform | |||
| Segment Reporting Asset Reconciling Item [Line Items] | |||
| Goodwill | $ 8,400,000 |