| 
           Income Taxes (Details) (USD $) 
         | 
        3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
| 
           Jun. 30, 2012 
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           Jul. 02, 2011 
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           Jun. 30, 2012 
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           Jul. 02, 2011 
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           Dec. 31, 2011 
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      |
| Income Taxes (Textual) [Abstract] | |||||
| Penalties or interest liability accrued | $ 0 | $ 0 | $ 0 | ||
| Penalties or interest expense | $ 0 | $ 0 | $ 0 | $ 0 | |
| Effective tax rate | 30.80% | 32.20% | 31.60% | 31.90% | |
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- Details 
          
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- Definition 
          A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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