| 
           Income Taxes (Details) (USD $) 
         | 
        3 Months Ended | ||
|---|---|---|---|
| 
           Mar. 30, 2013 
         | 
        
           Mar. 31, 2012 
         | 
        
           Dec. 31, 2012 
         | 
      |
| Income Taxes (Textual) [Abstract] | |||
| Penalties or interest liability accrued | $ 0 | $ 0 | |
| Penalties or interest expense | 0 | 0 | |
| Effective Tax Rate | 21.00% | 32.30% | |
| Domestic Tax Credits related to 2012 | 1,100,000 | ||
| Domestic Tax Credits related to 2013 | $ 200,000 | ||
| X | ||||||||||
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- Definition 
          Domestic tax credit related to current year recognized during period. No definition available. 
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| X | ||||||||||
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- Definition 
          Domestic tax credit related to previous year recognized during period. No definition available. 
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| X | ||||||||||
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- Details 
          
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| X | ||||||||||
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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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| X | ||||||||||
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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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| X | ||||||||||
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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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