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Summary of Options Granted (Detail) (USD $)
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3 Months Ended | ||
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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| Number of Shares | |||
| Exercisable | 125 | ||
| Weighted Average Exercise Price | |||
| Exercisable, December 31, 2013 | $ 3.74 | ||
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2011 Equity Incentive Plan
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| Number of Shares | |||
| Beginning Balance | 1,005,000 | 933,000 | 60,000 |
| Granted | 1,625,000 | 121,000 | 873,000 |
| Canceled | |||
| Rescinded | (49,000) | ||
| Forfeited | (30,000) | ||
| Exercised | |||
| Ending Balance | 2,600,000 | 1,005,000 | 933,000 |
| Vested and expected to vest | 1,847,000 | ||
| Exercisable | 125,000 | ||
| Weighted Average Exercise Price | |||
| Beginning Balance | $ 4.27 | $ 4.32 | $ 4.65 |
| Granted | $ 2.66 | $ 3.86 | $ 4.31 |
| Canceled | |||
| Rescinded | $ 4.42 | ||
| Forfeited | $ 4.50 | ||
| Exercised | |||
| Ending Balance | $ 3.26 | $ 4.27 | $ 4.32 |
| Vested and expected to vest at December 31, 2013 | $ 3.33 | ||
| Exercisable, December 31, 2013 | $ 3.74 | ||
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Options Rescinded In Period No definition available.
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangements By Share Based Payment Award Options Rescinded In Period Weighted Average Exercise Price No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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- Definition
Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
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| X | ||||||||||
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- Definition
Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired. No definition available.
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| X | ||||||||||
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- Definition
Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. No definition available.
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| X | ||||||||||
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded. No definition available.
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| X | ||||||||||
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- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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