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Income per Share (Tables) | 6 Months Ended
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Jun. 30, 2013
Basis of Income per Share Computation | The following table presents the basis for the income per share computations:
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, 2013 |  |  | July 1, 2012 |  |  | June 30, 2013 |  |  | July 1, 2012 |
|  | (In thousands) |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 29,492 |  |  | $ | 39,705 |  |  | $ | 51,737 |  |  | $ | 59,444 |
Income from discontinued operations, net of tax |  |  | — |  |  |  | 2,685 |  |  |  | — |  |  |  | 7,221 |
Net income |  | $ | 29,492 |  |  | $ | 42,390 |  |  | $ | 51,737 |  |  | $ | 66,665 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding, basic |  |  | 43,928 |  |  |  | 45,526 |  |  |  | 44,173 |  |  |  | 45,720 |
Effect of dilutive common stock equivalents |  |  | 862 |  |  |  | 779 |  |  |  | 934 |  |  |  | 903 |
Weighted average shares outstanding, diluted |  |  | 44,790 |  |  |  | 46,305 |  |  |  | 45,107 |  |  |  | 46,623 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
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Period Type: | duration