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Concentration of Credit Risk - Additional Information (Detail) (USD $)	9 Months Ended		9 Months Ended		9 Months Ended
	Sep. 30, 2014 Institution	Jul. 31, 2013	Sep. 30, 2014 Mortgages Payable [Member]	Jul. 11, 2008 Mortgages Payable [Member]	Sep. 30, 2014 Term Loan [Member]	Jul. 31, 2013 Term Loan [Member]	Sep. 30, 2014 Project Term Loans [Member]
Concentration Of Credit Risk [Line Items]
Uninsured cash balance	$ 4,200,000
Number of financial institution in which cash is maintain	1
Basis spread on variable rate, points		0.75%	0.01%	0.75%		5.00%	5.00%
Interest obligation from basis points variation, per month			$ 839		$ 2,629		$ 6,457
Credit risk maturity period			2016-07
Basis spread on variable rate, points					0.01%