DEBT - Mortgage Notes Payable Related to Real Estate Investments Held For Sale, Net (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Principal amount	$ 182,948,438
Plus unamortized mortgage premium	447,471
Less: deferred financing costs, net	(1,491,715)
Total	181,904,194
Mortgage Notes Payable
Debt Instrument [Line Items]
Principal amount	176,948,438	$ 195,739,481
Plus unamortized mortgage premium	447,471	489,664
Less: deferred financing costs, net	(1,469,991)	(2,189,938)
Total	175,925,918	194,039,207
Mortgage Notes Payable \| Harley Davidson property
Debt Instrument [Line Items]
Principal amount	0	6,748,029
Mortgage Notes Payable \| EcoThrift property
Debt Instrument [Line Items]
Principal amount	0	$ 2,639,237
Mortgage Notes Payable \| Secured Notes Payable, Real Estate Held-for-sale
Debt Instrument [Line Items]
Principal amount	9,196,855
Plus unamortized mortgage premium	1,550
Less: deferred financing costs, net	(109,967)
Total	9,088,438
Mortgage Notes Payable \| Secured Notes Payable, Real Estate Held-for-sale \| Harley Davidson property \| Retail
Debt Instrument [Line Items]
Principal amount	6,623,346
Mortgage Notes Payable \| Secured Notes Payable, Real Estate Held-for-sale \| EcoThrift property \| Retail
Debt Instrument [Line Items]
Principal amount	$ 2,573,509

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt discount (premium).

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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