Property Loans, Net of Loan Loss Allowances - Summary of Changes in Partnership's Loan Loss Allowance (Details) - USD ($)		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Accounts Notes Loans And Financing Receivable Gross Allowance And Net [Abstract]
Balance, beginning of year		$ 7,393,814	$ 7,393,814
Provision for loan loss	[1]	911,232
Balance, end of year		$ 8,305,046	$ 7,393,814

[1] ^{The provision for loan loss is related to the Live 929 Apartments property loan.}