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Concentration of Credit Risk - Additional Information (Detail) (USD $) | 3 Months Ended |  |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2014 Institution | Jul. 31, 2013 | Mar. 31, 2014 Mortgage Payable [Member] | Jul. 11, 2008 Mortgage Payable [Member] | Mar. 31, 2014 Term Loan [Member] | Jul. 31, 2013 Term Loan [Member]
Concentration Of Credit Risk [Line Items] |  |  |  |  |  |
Uninsured cash balance | $ 6,000,000 |  |  |  |  |
Number of financial institution in which cash is maintain | 1 |  |  |  |  |
Basis spread on variable rate, points |  | 0.75% | 0.01% | 0.75% |  | 5.00%
Interest obligation from basis points variation, per month |  |  | $ 906 |  | $ 2,800 |
Credit risk maturity period |  |  | 2016-07 |  |  |
Basis spread on variable rate, points |  |  |  |  | 0.01% |

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