Accounts Payable, Accrued Expenses and Other Liabilities - Summary of Accounts Payable, Accrued Expenses and Other Liabilities (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Payables And Accruals [Abstract]
Accounts payable	$ 109,503	$ 94,674
Accrued expenses	2,626,800	2,755,010
Accrued interest expense	3,630,945	3,433,247
Operating lease liabilities	$ 2,150,033	$ 2,149,001
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Total accounts payable, accrued expenses and other liabilities	Total accounts payable, accrued expenses and other liabilities
Other liabilities	$ 1,556,498	$ 1,517,633
Total accounts payable, accrued expenses and other liabilities	$ 10,073,779	$ 9,949,565