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Weighted-Average Shares (Tables) | 6 Months Ended
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Jun. 30, 2013
Earnings Per Share [Abstract] |
Calculation of Weighted-Average Shares | Weighted-average shares were calculated as follows (in thousands):
|  | Three-months Ended |  |  | Six-months Ended |
|  | June 30, 2013 |  |  | July 1, 2012 |  |  | June 30, 2013 |  |  | July 1, 2012 |
Basic weighted-average common shares outstanding |  |  | 43,522 |  |  |  | 42,851 |  |  |  | 43,392 |  |  |  | 42,710 |
Effect of dilutive stock options |  |  | 835 |  |  |  | 750 |  |  |  | 859 |  |  |  | 889 |
Weighted-average common and common-equivalent shares outstanding |  |  | 44,357 |  |  |  | 43,601 |  |  |  | 44,251 |  |  |  | 43,599 |

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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 -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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