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Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $)
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12 Months Ended | ||
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Dec. 29, 2012
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Dec. 31, 2011
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Jan. 01, 2011
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| Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||
| Payment of dividends (dollars per share) | $ 0.25 | $ 0.25 | $ 0.50 |
| Issuance of shares of common stock from the treasury (in shares) | 19,089 | 18,280 | 13,949 |
| Stock options exercised, net (shares) | 11,800 | 18,155 | 8,884 |
| X | ||||||||||
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- Definition
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Net No definition available.
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| X | ||||||||||
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- Definition
Aggregate dividends paid during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Number of treasury shares (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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