Concentration of Credit Risk - Additional Information (Detail) - Jun. 30, 2015	USD ($) Institution
Concentration Of Credit Risk [Line Items]
Uninsured cash balance	$ 5,690,607
Number of financial institutions in which cash is deposited | Institution	1
Mortgages Payable [Member]
Concentration Of Credit Risk [Line Items]
Basis spread on variable rate, points	0.01%
Interest obligation from basis points variation, per month	$ 838
Credit risk maturity period	2016-07
Project Term Loans [Member]
Concentration Of Credit Risk [Line Items]
Interest obligation from basis points variation, per month	$ 6,510
Term Loan [Member]
Concentration Of Credit Risk [Line Items]
Interest obligation from basis points variation, per month	$ 2,311
Basis spread on variable rate, points	0.01%