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Share-Based Compensation and Non-Qualified Deferred Compensation Plan (Tables) | 9 Months Ended
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Sep. 30, 2013
Share-based Compensation [Abstract] |
Schedule Of Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range And Intrinsic Value | The following table summarizes outstanding share options and exercisable options at September 30, 2013:
| Outstanding Options (1) |  | Exercisable Options (1)
Range of Exercise Prices | Number |  | Weighted Average Price |  | Number |  | Weighted Average Price
$30.06-$41.16 | 228,012 |  |  | $ | 33.14 |  |  | 130,107 |  |  | $ | 35.46 |
$42.90-$43.94 | 108,947 |  |  | 43.43 |  |  | 108,947 |  |  | 43.43 |
$45.53-$62.32 | 298,609 |  |  | 47.39 |  |  | 298,609 |  |  | 47.39 |
Total options | 635,568 |  |  | $ | 41.60 |  |  | 537,663 |  |  | $ | 43.70 |
(1) | The aggregate intrinsic value of outstanding and exercisable options at September 30, 2013 was $12.6 million and $9.6 million, respectively. The aggregate intrinsic values were calculated as the excess, if any, between our closing share price of $61.44 per share on September 30, 2013 and the strike price of the underlying award.
Summary Of Share Incentive Plans | The following table summarizes activity under our share incentive plans for the nine months ended September 30, 2013:
| Options Outstanding |  | Weighted Average Exercise Price |  | Nonvested Share Awards Outstanding |  | Weighted Average Grant Price
Total options and nonvested share awards outstanding at December 31, 2012 | 838,754 |  |  | $ | 42.36 |  |  | 862,253 |  |  | $ | 52.64 |
Granted | — |  |  | — |  |  | 349,565 |  |  | 69.59 |
Exercised/vested | (182,664 | ) |  | 41.52 |  |  | (296,373 | ) |  | 50.43 |
Forfeited | (20,522 | ) |  | 73.32 |  |  | (65,076 | ) |  | 57.90 |
Total options and nonvested share awards outstanding at September 30, 2013 | 635,568 |  |  | $ | 41.60 |  |  | 850,369 |  |  | $ | 59.98 |
Summary of non-qualified deferred compensation share award activity | The following table summarizes the share award activity since the effective date of the amended and restated Plan through September 30, 2013:
(in thousands) |  |
Balance at December 31, 2012 |  | $ | — |
Change in classification |  | 34,517 |
Change in redemption value |  | 12,928 |
Diversification of share awards |  | (353 | )
Balance at September 30, 2013 |  | $ | 47,092 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and aggregate intrinsic value. + References No definition available. + Details
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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + Details
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- Definition Tabular disclosure of temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 28 -Article 5 + Details
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