Stockholders' Equity - Stock Option Activity (Detail) (USD $)	6 Months Ended
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Granted	411,760
2008 Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Beginning balance	3,053,355
Number of Options, Granted	616,760
Number of Options, Ending balance	3,670,115
Number of Options, Outstanding - vested or unvested and expected to vest	3,592,370
Number of Options, Exercisable	2,293,860
Weighted Average Exercise Price, beginning balance	3.10
Weighted Average Exercise Price, Granted	2.14
Weighted Average Exercise Price, ending balance	2.94
Weighted Average Exercise Price, Outstanding - vested or unvested and expected to vest	2.93
Weighted Average Exercise Price, Exercisable	2.78
Weighted Average Remaining Contractual Life, Ending balance	7 years 4 months 13 days
Weighted Average Remaining Contractual Life, Outstanding - vested or unvested and expected to vest	7 years 4 months 6 days
Weighted Average Remaining Contractual Life, Exercisable	6 years 7 months 13 days
Aggregate Intrinsic Value, Ending balance	50
Aggregate Intrinsic Value, Outstanding vested or unvested and expected to vest	50
Aggregate Intrinsic Value, Exercisable	50

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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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.

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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.

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Gross number of share options (or share units) granted during the period.

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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.

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