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Stock-Based Compensation Plans (Schedule Of Shares And Units Of Restricted Common Stock) (Details) - Restricted Stock Awards [Member] - $ / shares shares in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of Shares/Units | 419 | 275 | 444 | 548
Weighted Average Fair Value | $ 13.90 | $ 22.67 | $ 13.55 | $ 26.00
Incentive Plans [Member] | Non-Employee Directors [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of Shares/Units | 39 |  | 64 |
Weighted Average Fair Value | $ 12.78 |  | $ 10.79 |
Director Plan [Member] | Non-Employee Directors [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of Shares/Units | 24 | 24 | 24 | 24
Weighted Average Fair Value | $ 12.78 | $ 22.61 | $ 12.78 | $ 22.61
Service Condition [Member] | Incentive Plans [Member] | Non-Executive Employees [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of Shares/Units | 85 | 226 | 85 | 439
Weighted Average Fair Value | $ 12.33 | $ 22.68 | $ 12.33 | $ 25.86
Service Condition [Member] | Incentive Plans [Member] | Executive Officers [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of Shares/Units | 150 | 25 | 150 | 85
Weighted Average Fair Value | $ 15.12 | $ 22.61 | $ 15.12 | $ 27.50
Market And Service Condition [Member] | Incentive Plans [Member] | Non-Executive Employees [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of Shares/Units | 46 |  | 46 |
Weighted Average Fair Value | $ 12.33 |  | $ 12.33 |
Market And Service Condition [Member] | Incentive Plans [Member] | Executive Officers [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of Shares/Units | 75 |  | 75 |
Weighted Average Fair Value | $ 15.12 |  | $ 15.12 |

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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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