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Stockholders' Equity (Detail) - Schedule of Stock option plans (USD $)
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6 Months Ended | 9 Months Ended |
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Jan. 17, 2013
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Apr. 30, 2013
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| Outstanding at July 31, 2012 | 736,490 | 736,490 |
| Outstanding at July 31, 2012 (in Dollars per share) | $ 14.53 | $ 14.53 |
| Awarded | 2.88 | 336,817 |
| Awarded (in Dollars per share) | $ 2.88 | |
| Cancelled | (346,662) | |
| Cancelled (in Dollars per share) | $ 11.82 | |
| Outstanding at end of period | 726,645 | |
| Outstanding at end of period (in Dollars per share) | $ 10.39 | |
| Outstanding at end of period | 2 years 328 days | |
| Options vested at end of period | 389,828 | |
| Options vested at end of period (in Dollars per share) | $ 2.88 | |
| Options vested at end of period | 1 year 73 days |
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- Definition
For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average price of options that were either forfeited or expired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Gross number of share options (or share units) granted during the period. No definition available.
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- Definition
Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. No definition available.
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