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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2015
Stock-Based Compensation [Abstract] |
Schedule Of Stock-Based Compensation Expense |
| Year Ended December 31,
(in thousands) | 2015 |  | 2014 |  | 2013
Stock-based compensation expense for: |  |  |  |  |  |  |  |
Incentive Plans | $ | 34,169 |  | $ | 31,944 |  | $ | 12,958
Director Plan |  | 564 |  |  | 849 |  |  | 600
Total stock-based compensation expense | $ | 34,733 |  | $ | 32,793 |  | $ | 13,558
Schedule Of Restricted Stock Units Award Activity |
|  | Year Ended December 31,
|  | 2015 |  |  | 2014 |  |  | 2013
(in thousands, except per share amounts) |  | Number of Shares/Units |  | Weighted Average Fair Value |  | Number of Shares/Units |  | Weighted Average Fair Value |  | Number of Shares/Units |  | Weighted Average Fair Value
Restricted stock awards: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted under the Incentive Plans, non-executive employees |  | 1,152 |  | $ | 16.30 |  |  | 774 |  | $ | 52.09 |  |  | 902 |  | $ | 59.42
Granted under the Incentive Plans, executive officers |  | 260 |  |  | 14.77 |  |  | 240 |  |  | 41.00 |  |  | 212 |  |  | 72.60
Granted under the 2004 Director Plan, non-employee directors |  | 26 |  |  | 21.30 |  |  | 17 |  |  | 49.26 |  |  | 12 |  |  | 48.43
Total restricted stock awards granted |  | 1,438 |  | $ | 16.12 |  |  | 1,031 |  | $ | 49.46 |  |  | 1,126 |  | $ | 61.78

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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