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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 Earnings Per Share [Line Items]    
Antidilutive securities not included in the computation of earnings per share 1,917 2,071
Nonvested restricted stock and restricted stock units [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities not included in the computation of earnings per share 220 0