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Stock Benefit Plans - Schedule of Weighted Average Black-Scholes Model Assumptions and Weighted Average Date of Grant Fair Value of Stock Options (Detail) - $ / shares	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected term (in years)	4 years 7 months 6 days	4 years 7 months 6 days	4 years 7 months 6 days
Expected volatility	46.00%	48.00%	54.00%
Expected dividend yield	0.00%	0.00%	0.00%
Risk-free interest rate	1.60%	1.40%	0.70%
Grant date fair value	$ 1.87	$ 3.67	$ 3.82

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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-Publisher FASB



-Name Accounting Standards Codification



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-Section 50



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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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