Accounts Payable, Accrued Expenses and Other Liabilities - Additional Information (Details) - The 50/50 Student Housing--UNL [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Lessee Lease Description [Line Items]
Initial lease term expiration period			2038-03
Lease agreement extend term			5 years
Annual lease payments			$ 100
Minimum annual rentals under lease agreement			$ 132,000
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	$ 126,000	$ 126,000