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Changes In Shareholders' Equity (Tables) | 9 Months Ended
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Sep. 25, 2011
Changes In Shareholders' Equity [Abstract] |
Reconciliation Of Basic To Diluted Weighted Average Common Shares Outstanding |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 25, 2011 |  |  | September 26, 2010 |  |  | September 25, 2011 |  |  | September 26, 2010 |
|  | (Shares in thousands) |
Basic |  |  | 40,684 |  |  |  | 39,933 |  |  |  | 40,426 |  |  |  | 39,879 |
Dilutive shares assumed issued |  |  | 259 |  |  |  | 321 |  |  |  | 312 |  |  |  | 390 |
Diluted |  |  | 40,943 |  |  |  | 40,254 |  |  |  | 40,738 |  |  |  | 40,269 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 260 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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