Summary of Stock Option Plans (Detail) (Stock Options, USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended
Sep. 30, 2013	Jun. 30, 2013
Stock Options
Number of Shares
Outstanding at beginning of period	2,070
Granted	0
Exercised	(10)
Cancelled	(191)
Outstanding at end of period	1,869	2,070
Weighted Average Exercise Price
Outstanding at beginning of period	$ 13.44
Granted	$ 0.00
Exercised	$ 5.82
Cancelled	$ 20.77
Outstanding at end of period	$ 12.73	$ 13.44
Weighted Average Remaining Contractual Term (Years)
Outstanding at end of period	2 years 6 months 29 days	2 years 7 months 6 days

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

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

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