Fair Value of Financial Instruments - Summary of Fair Value of Partnership's Financial Liabilities (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Mortgages payable and other secured financing	$ 25,984,872	$ 26,802,246
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt financing	673,957,640	536,197,421
Unsecured lines of credit	7,475,000	13,200,000
Mortgages payable and other secured financing	25,984,872	26,802,246
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt financing	709,760,933	554,993,494
Unsecured lines of credit	7,475,000	13,200,000
Mortgages payable and other secured financing	$ 25,986,514	$ 26,812,851