Share-Based Compensation Plans - Summary of Stock Option Activity (Detail) - $ / shares shares in Thousands	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Outstanding Beginning Balance, Shares	3,585	3,107
Granted, Shares	1,219	1,172
Exercised, Shares	(100)	(65)
Forfeited, Shares	(474)	(317)
Expired, Shares	(384)	(312)
Outstanding Ending Balance, Shares	3,846	3,585
Exercisable, end of year, Shares	2,418	2,167
Weighted average fair value of options granted during the year	$ 2.10	$ 2.89
Outstanding Beginning Balance, Weighted Average Exercise Price	9.19	10.93
Granted, Weighted Average Exercise Price	3.28	4.49
Exercised, Weighted Average Exercise Price	3.94	2.40
Forfeited, Weighted Average Exercise Price	3.82	7.17
Expired, Weighted Average Exercise Price	12.06	12.44
Outstanding Ending Balance, Weighted Average Exercise Price	$ 7.82	$ 9.19

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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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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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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.

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

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

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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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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