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Earnings Per Share - Antidilutive Securities (Details)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 30, 2014
Mar. 31, 2013
Stock options [Member]
   
Antidilutive Securities Excluded from Computation of Diluted Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of diluted EPS 138 222
Restricted Stock Units [Member]
   
Antidilutive Securities Excluded from Computation of Diluted Earnings Per Share [Line Items]    
Antidilutive securities excluded from computation of diluted EPS 1 2