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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
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.