Equity Plans - Stock Option Activity and Related Information (Detail) (USD $)	6 Months Ended
Dec. 31, 2013
Number of Options (Shares)
Outstanding at June 30, 2013	2,170,598
Granted
Exercised	(6,668)
Forfeited or expired	(56,110)
Outstanding at December 31, 2013	2,107,820
Vested and expected to vest at December 31, 2013	2,107,820
Exercisable at December 31, 2013	990,210
Weighted-Average Exercise Price
Outstanding at June 30, 2013	$ 4.93
Granted
Exercised	$ 1.22
Forfeited or expired	$ 6.47
Outstanding at December 31, 2013	$ 4.94
Vested and expected to vest at December 31, 2013	$ 4.94
Exercisable at December 31, 2013	$ 7.00
Weighted-Average Remaining Contractual Term (Years)
Outstanding at December 31, 2013	6 years 2 months 12 days
Vested and expected to vest at December 31, 2013	6 years 2 months 12 days
Exercisable at December 31, 2013	4 years 2 months 12 days

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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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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.

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Weighted average price of options that were either forfeited or expired.

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

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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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.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options that are exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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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.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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