Summary of Stock Option Plans (Detail) (Stock Options, USD $) In Thousands, except Per Share data, unless otherwise specified	9 Months Ended	12 Months Ended
Mar. 31, 2013	Jun. 30, 2012	Jun. 30, 2011
Stock Options
Number of Shares
Outstanding at beginning of period	2,185	2,293
Granted	271
Exercised	(56)	(72)
Cancelled	(284)	(36)
Outstanding at end of period	2,116	2,185	2,293
Weighted Average Exercise Price
Outstanding at beginning of period	$ 14.46	$ 14.35
Granted	$ 4.75
Exercised	$ 6.17	$ 6.48
Cancelled	$ 14.48	$ 23.70
Outstanding at end of period	$ 13.43	$ 14.46	$ 14.35
Weighted Average Remaining Contractual Term (Years)
Outstanding at end of period	2 years 9 months 26 days	2 years 10 months 21 days	3 years 10 months 17 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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