Accounts Payable, Accrued Expenses and Other Liabilities - Additional Information (Details) - The 50/50 Student Housing--UNL [Member] - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Lessee Lease Description [Line Items]
Initial lease term expiration period	2048-03
Lease agreement extend term	5 years
Annual lease payments	$ 100
Minimum annual rentals under lease agreement	$ 135,000
Annual increment percentage in lease rent	2.00%
Lease agreement annual renewable increase percentage after July 31, 2034	3.00%
Expenses related to the agreement	$ 42,000	$ 42,000