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Stockholders' Equity - Additional Information (Detail) (USD $) |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2014 | Mar. 31, 2014 | Sep. 30, 2014 MLV & Co. LLC Atm Arrangement | Nov. 15, 2013 MLV & Co. LLC Atm Arrangement
Schedule Of Capitalization Equity [Line Items] |  |  |  |
Common stock | $ 860,000 | $ 789,000 |  | $ 30,000,000
Commission on sale of common stock under the ATM |  |  |  | 3.00%
Net proceeds from sale of common stock |  |  | 3,700,000 |
Common stock, shares issued |  |  | 2,100,000 |
Sale price of common stock per share |  |  | $ 1.75 |
Common Stock, Value, Outstanding |  |  | $ 17,100,000 |

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