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Employee Stock Plans (Additional Information Stock Options And SARs) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
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Jan. 31, 2012
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Jan. 31, 2011
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Jan. 31, 2012
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Jan. 31, 2011
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| Employee Stock Plans [Abstract] | ||||
| Weighted-average fair value of stock options granted | $ 7.81 | $ 9.61 | $ 6.07 | |
| Total fair value of stock options and SARs vested | $ 20 | $ 27 | $ 914 | $ 642 |
| Total intrinsic value of stock options exercised | 127 | 3,330 | 986 | 4,015 |
| Total intrinsic value of SARs paid | $ 34 | $ 45 | $ 67 | |
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- Definition
Share-based compensation arrangement by share-based payment award, equity instruments options and stock appreciation rights, vested in period, total fair values. No definition available.
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- Definition
Share-based compensation arrangement by share-based payment award, options, total intrinsic value of stock appreciation rights paid. No definition available.
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- Details
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- Definition
The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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