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Related Party Transactions - Summary of Related Party Carrying Value of Investments In Advances (Detail) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
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Related Party Transaction [Line Items] |  |  |
Total investments in and advances |  | $ 62,371,167 | $ 12,404,380
SSGT III OP |  |  |
Related Party Transaction [Line Items] |  |  |
Receivables |  | 156,082 | 0
Total investments in and advances |  | 22,320,769 | 0
SSGT III OP | SSGT III Mezzanine Loan |  |  |
Related Party Transaction [Line Items] |  |  |
Debt | [1] | 17,500,000 | 0
SSGT III OP | SSGT III OP Units and SLP |  |  |
Related Party Transaction [Line Items] |  |  |
Equity |  | 4,664,687 | 0
SST VI |  |  |
Related Party Transaction [Line Items] |  |  |
Receivables |  | 1,828,990 | 801,233
Total investments in and advances |  | 40,050,400 | 11,802,138
SST VI | SST VI Mezzanine Loan |  |  |
Related Party Transaction [Line Items] |  |  |
Debt | [2] | 35,000,000 | 6,800,000
SST VI | SST VI OP Units and SLP |  |  |
Related Party Transaction [Line Items] |  |  |
Equity |  | $ 3,221,410 | $ 4,200,905
[1] | As of December 31, 2022, $17.5 million was available to be drawn on the SSGT III Mezzanine Loan. On January 26, 2023, SSGT III fully repaid the $17.5 million outstanding principal, plus accrued interest.
[2] | As of December 31, 2022 and 2021, $20.0 million and $38.2 million, respectively was available to be drawn on the SST VI Mezzanine Loan. Subsequent to December 31, 2022, on January 30, 2023, SST VI borrowed an additional $15.0 million on the SST VI Mezzanine Loan. Additionally, on January 30, 2023, we invested $15.0 million in preferred limited partnership interests in SST VI OP. Please see Note 14 – Subsequent Events, of the Notes to the Consolidated Financial Statements for more information.

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