Mortgage Payable and Other Secured Financing - Summary of Partnerships' Mortgage Payable and Other Secured Financing, Net of Deferred Financing Costs (Details) - USD ($)	9 Months Ended
Sep. 30, 2021	Dec. 31, 2020
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net	$ 25,429,450	$ 25,984,872
Period End Rate	4.36%
Tax Increment Financing [Member] \| Real Estate [Member] \| The 50/50 Student Housing--UNL [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net	$ 2,335,094	2,521,308
Year Acquired	2020
Commitment Maturity	2025-03
Variable / Fixed	Fixed
Period End Rate	4.40%
Mortgages payable [Member] \| Real Estate [Member] \| The 50/50 Student Housing--UNL [Member]
Mortgage Loans on Real Estate [Line Items]
Outstanding Mortgage Payable, net	$ 23,094,356	$ 23,463,564
Year Acquired	2020
Commitment Maturity	2027-04
Variable / Fixed	Fixed
Period End Rate	4.35%

Date of debt borrowing.

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- Definition

Debt instrument stated maturity date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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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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