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Stock-Based Compensation Plans (Schedule Of Restricted Stock Units Award Activity) (Details) - Restricted Stock Awards [Member] - $ / shares shares in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Restricted stock awards granted | 181 | 88 | 729 | 511
Restricted stock awards granted, weighted average exercise price | $ 15.97 | $ 52.73 | $ 23.29 | $ 65.43
Incentive Plans [Member] | Non-Executive Employee [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Restricted stock awards granted | 181 | 88 | 620 | 464
Restricted stock awards granted, weighted average exercise price | $ 15.97 | $ 52.73 | $ 22.78 | $ 65.35
Incentive Plans [Member] | Executive Officer [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Restricted stock awards granted |  |  | 85 | 30
Restricted stock awards granted, weighted average exercise price |  |  | $ 27.50 | $ 75.76
2004 Director Plan [Member] | Non-Employee Director [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Restricted stock awards granted |  |  | 24 | 17
Restricted stock awards granted, weighted average exercise price |  |  | $ 22.61 | $ 49.26

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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