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Earnings Per Common Share (Schedule Of Basic Weighted Average Shares Reconciles To Diluted Weighted Average Shares) (Details) In Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2011 | Jun. 30, 2010 | Jun. 30, 2011 | Jun. 30, 2010
Earnings Per Common Share |  |  |  |
Basic weighted average common shares outstanding | 82,151 | 80,369 | 81,790 | 80,225
Dilutive effect of stock options, unvested shares, and DCUs | 1,627 | 1,431 | 1,717 | 1,430
Diluted weighted average common shares outstanding | 83,778 | 81,800 | 83,507 | 81,655

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- Definition The sum of dilutive potential common shares used in the calculation of the diluted per-share computation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a + Details
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- Definition The average number of shares issued and outstanding that are used in calculating diluted EPS, determined based on the timing of issuance of shares in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 + Details
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- Definition Number of [basic] shares, after adjustment for contingently issuable shares and other shares not deemed outstanding, determined by relating the portion of time within a reporting period that common shares have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 + Details
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