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Employee Stock Plans (Tables) | 12 Months Ended
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Apr. 30, 2012
Components Of Stock-Based Compensation Expense Recognized | The following table summarizes the components of stock-based compensation expense recognized in the Company’s consolidated statements of income for the periods indicated:
|  | Year Ended April 30, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
|  | (in thousands) |
Restricted stock |  | $ | 12,381 |  |  | $ | 14,090 |  |  | $ | 16,470 |
Stock options and SARs |  |  | 933 |  |  |  | 1,028 |  |  |  | 853 |
ESPP |  |  | 85 |  |  |  | 429 |  |  |  | 406 |
Total stock-based compensation expense, pre-tax |  |  | 13,399 |  |  |  | 15,547 |  |  |  | 17,729 |
Tax benefit from stock-based compensation expense |  |  | (4,701 | ) |  |  | (5,675 | ) |  |  | (6,471 | )
Total stock-based compensation expense, net of tax |  | $ | 8,698 |  |  | $ | 9,872 |  |  | $ | 11,258 |
Weighted-Average Assumptions Used To Estimate Fair Value Of Each Employee Stock Option And SARs | The weighted-average assumptions used to estimate the fair value of each employee stock option and SARs were as follows:
|  | Year Ended April 30, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Expected volatility |  |  | 47.07 | % |  |  | 47.67 | % |  |  | 48.91 | %
Risk-free interest rate |  |  | 1.47 | % |  |  | 1.83 | % |  |  | 2.53 | %
Expected option life (in years) |  |  | 5.00 |  |  |  | 5.00 |  |  |  | 5.00 |
Expected dividend yield |  |  | 0.00 | % |  |  | 0.00 | % |  |  | 0.00 | %
Stock Options And SAR Transactions | Stock options and SAR transactions under the Company’s 2008 Plan were as follows:
|  | April 30, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
|  | Options |  |  | Weighted- Average Exercise Price |  |  | Options |  |  | Weighted- Average Exercise Price |  |  | Options |  |  | Weighted- Average Exercise Price |
|  | (in thousands, except per share data) |
Outstanding, beginning of year |  |  | 1,833 |  |  | $ | 13.78 |  |  |  | 2,723 |  |  | $ | 14.72 |  |  |  | 3,113 |  |  | $ | 14.83 |
Granted |  |  | 48 |  |  | $ | 22.71 |  |  |  | 211 |  |  | $ | 13.97 |  |  |  | 621 |  |  | $ | 11.26 |
Exercised |  |  | (235 | ) |  | $ | 12.76 |  |  |  | (625 | ) |  | $ | 12.81 |  |  |  | (531 | ) |  | $ | 8.21 |
Forfeited/expired |  |  | (154 | ) |  | $ | 15.63 |  |  |  | (476 | ) |  | $ | 20.55 |  |  |  | (480 | ) |  | $ | 18.14 |
Outstanding, end of year |  |  | 1,492 |  |  | $ | 14.00 |  |  |  | 1,833 |  |  | $ | 13.78 |  |  |  | 2,723 |  |  | $ | 14.72 |
Exercisable, end of year |  |  | 1,061 |  |  | $ | 14.33 |  |  |  | 1,219 |  |  | $ | 14.64 |  |  |  | 2,142 |  |  | $ | 15.68 |
Outstanding Stock Options And SARs | Outstanding stock options and SARs:
|  | April 30, 2012 |
|  | Options Outstanding |  |  | Options Exercisable |
Range of Exercise Prices |  | Shares |  |  | Weighted- Average Remaining Contractual Life (in years) |  |  | Weighted- Average Exercise Price |  |  | Shares |  |  | Weighted- Average Remaining Contractual Life (in years) |  |  | Weighted- Average Exercise Price |
|  | (in thousands, except per share data) |
$ 6.26 - $ 9.55 |  |  | 312 |  |  |  | 0.9 |  |  | $ | 7.89 |  |  |  | 312 |  |  |  | 0.9 |  |  | $ | 7.89 |
$ 9.56 - $13.90 |  |  | 463 |  |  |  | 4.4 |  |  | $ | 11.23 |  |  |  | 148 |  |  |  | 4.1 |  |  | $ | 10.80 |
$13.91 - $17.97 |  |  | 352 |  |  |  | 3.5 |  |  | $ | 16.79 |  |  |  | 282 |  |  |  | 3.2 |  |  | $ | 17.26 |
$17.98 - $24.08 |  |  | 365 |  |  |  | 2.9 |  |  | $ | 20.02 |  |  |  | 319 |  |  |  | 2.5 |  |  | $ | 19.66 |
|  |  | 1,492 |  |  |  | 3.1 |  |  | $ | 14.00 |  |  |  | 1,061 |  |  |  | 2.4 |  |  | $ | 14.33 |
Additional Information Pertaining To Stock Options And SARs | Additional information pertaining to stock options and SARs:
|  | Year Ended April 30, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
|  | (in thousands, except per share data) |
Weighted-average fair value per share of stock options granted |  | $ | 9.61 |  |  | $ | 6.07 |  |  | $ | 5.07 |
Total fair value of stock options and SARs vested |  | $ | 1,065 |  |  | $ | 747 |  |  | $ | 612 |
Total intrinsic value of stock options exercised |  | $ | 1,485 |  |  | $ | 5,164 |  |  | $ | 2,631 |
Total intrinsic value of SARs paid |  | $ | 45 |  |  | $ | 178 |  |  | $ | 75 |
Restricted Stock Activity | Restricted stock activity is summarized below:
|  | April 30, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
|  | Shares |  |  | Weighted- Average Grant Date Fair Value |  |  | Shares |  |  | Weighted- Average Grant Date Fair Value |  |  | Shares |  |  | Weighted- Average Grant Date Fair Value |
|  | (in thousands, except per share data) |
Non-vested, beginning of year |  |  | 2,007 |  |  | $ | 8.64 |  |  |  | 2,480 |  |  | $ | 9.93 |  |  |  | 2,387 |  |  | $ | 15.50 |
Granted |  |  | 687 |  |  | $ | 21.46 |  |  |  | 562 |  |  | $ | 15.12 |  |  |  | 1,017 |  |  | $ | 10.57 |
Vested |  |  | (794 | ) |  | $ | 15.58 |  |  |  | (920 | ) |  | $ | 15.32 |  |  |  | (754 | ) |  | $ | 20.43 |
Forfeited/expired |  |  | (119 | ) |  | $ | 18.19 |  |  |  | (115 | ) |  | $ | 14.83 |  |  |  | (170 | ) |  | $ | 17.91 |
Non-vested, end of year |  |  | 1,781 |  |  | $ | 9.85 |  |  |  | 2,007 |  |  | $ | 8.64 |  |  |  | 2,480 |  |  | $ | 9.93 |

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