Property Loans, Net of Loan Loss Allowances - Summary of Partnership's Property Loans, Net of Loan Loss Allowances (Details) - USD ($)		Mar. 31, 2021	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance		$ 24,225,765	$ 21,225,765
Loan Loss Allowance		(8,305,046)	(8,305,046)
Property Loan Principal, net of allowance		15,920,719	12,920,719
Arbors at Hickory Ridge [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance		191,264	191,264
Property Loan Principal, net of allowance		191,264	191,264
Avistar (February 2013 Portfolio) [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance		201,972	201,972
Property Loan Principal, net of allowance		201,972	201,972
Avistar (June 2013 Portfolio) [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance		251,622	251,622
Property Loan Principal, net of allowance		251,622	251,622
Centennial Crossings [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance	[1]	3,017,729	3,017,729
Property Loan Principal, net of allowance	[1]	3,017,729	3,017,729
Cross Creek [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance		11,101,887	11,101,887
Loan Loss Allowance		(7,393,814)	(7,393,814)
Property Loan Principal, net of allowance		3,708,073	3,708,073
Greens Property [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance		850,000	850,000
Property Loan Principal, net of allowance		850,000	850,000
Live 929 Apartments [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance		911,232	911,232
Loan Loss Allowance		(911,232)	(911,232)
Hilltop at Signal Hills [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance	[1]	1,000,000
Property Loan Principal, net of allowance	[1]	1,000,000
Ohio Properties [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance		2,390,446	2,390,446
Property Loan Principal, net of allowance		2,390,446	2,390,446
Legacy Commons at Signal Hills [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance	[1]	1,000,000
Property Loan Principal, net of allowance	[1]	1,000,000
Scharbauer Flats Apartments [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance	[1]	2,309,613	2,309,613
Property Loan Principal, net of allowance	[1]	2,309,613	$ 2,309,613
Oasis at Twin Lakes [Member]
Accounts Notes And Loans Receivable [Line Items]
Property loan receivable, outstanding balance	[1]	1,000,000
Property Loan Principal, net of allowance	[1]	$ 1,000,000

[1] ^{The property loan is held in trust in connection with a TOB financing (Note 15).}