Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity and Stock Based Compensation (Details 2)

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Stockholders' Equity and Stock Based Compensation (Details 2) (Options, USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 28, 2013
Options
   
Number of Options    
Outstanding at the beginning of the period (in shares) 310,640  
Outstanding at the end of the period (in shares) 310,640  
Exercisable at the end of the period (in shares) 310,640  
Weighted Average Exercise Price    
Outstanding at the beginning of the period (in dollars per share) $ 8.65  
Outstanding at the end of the period (in dollars per share) $ 8.65  
Exercisable at the end of the period (in dollars per share) $ 8.65  
Weighted Average Remaining Contractual Term    
Outstanding at the end of the period 1 year 3 months 18 days  
Exercisable at the end of the period 1 year 3 months 18 days  
Aggregate Intrinsic Value    
Aggregate intrinsic value of options outstanding $ 1.1  
Aggregate intrinsic value of options exercisable $ 1.1  
Market value (in dollars per share)   $ 11.88