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Basic and Diluted Income Per Share (Details 1)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 27, 2013
Sep. 28, 2012
Sep. 27, 2013
Sep. 28, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti - dilutive securities which were not included in the calculation of diluted per share amounts (in shares) 1,001 3,788 1,091 2,619
Options and Restricted Stock [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti - dilutive securities which were not included in the calculation of diluted per share amounts (in shares) 1,001 3,183 1,091 1,813
Warrant [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti - dilutive securities which were not included in the calculation of diluted per share amounts (in shares) 0 605 0 806