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Loans Held for Investment - Schedule of Portfolio Information (Details) - USD ($) | Jun. 30, 2025 | Dec. 31, 2024
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Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
Principal Balance | $ 47,675,001 | $ 45,902,453
Carrying value | $ 30,554,359 | $ 30,387,896
% of Total | 100.00% | 100.00%
California |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
Principal Balance | $ 20,224,740 | $ 18,567,296
Carrying value | $ 20,426,987 | $ 18,575,895
California | Geographic Location Concentration Risk | Investment Owned At Cost |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
% of Total | 66.90% | 61.10%
New York |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
Principal Balance | $ 27,450,261 | $ 27,335,157
Carrying value | $ 10,127,372 | $ 11,812,001
New York | Geographic Location Concentration Risk | Investment Owned At Cost |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
% of Total | 33.10% | 38.90%
Total | Geographic Location Concentration Risk | Investment Owned At Cost |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
% of Total | 100.00% | 100.00%
Mixed use |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
Principal Balance | $ 20,224,740 | $ 18,567,296
Carrying value | $ 20,426,987 | $ 18,575,895
Mixed use | Property Type Concentration Risk | Investment Owned At Cost |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
% of Total | 66.80% | 61.10%
Office |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
Principal Balance | $ 24,491,877 | $ 24,491,877
Carrying value | $ 7,503,988 | $ 9,238,721
Office | Property Type Concentration Risk | Investment Owned At Cost |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
% of Total | 24.60% | 30.40%
Multifamily |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
Principal Balance | $ 2,958,384 | $ 2,843,280
Carrying value | $ 2,623,384 | $ 2,573,280
Multifamily | Property Type Concentration Risk | Investment Owned At Cost |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
% of Total | 8.60% | 8.50%
Total | Property Type Concentration Risk | Investment Owned At Cost |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
% of Total | 100.00% | 100.00%
Preferred equity investments |  |
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract] |  |
Principal Balance | $ 47,675,001 | $ 45,902,453
Carrying value | $ 30,554,359 | $ 30,387,896
% of Total | 100.00% | 100.00%

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