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Share-Based Compensation (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified
3 Months Ended
Mar. 26, 2014
Mar. 27, 2013
Total share-based compensation [Abstract]    
Total share-based compensation $ 1,164,000 $ 1,175,000
Stock options [Member]
   
Total share-based compensation [Abstract]    
Total share-based compensation 52,000 164,000
Unrecognized compensation cost [Abstract]    
Unrecognized compensation cost related to unvested stock option awards outstanding 0  
Performance shares [Member]
   
Total share-based compensation [Abstract]    
Total share-based compensation 928,000 831,000
Restricted Stock Units [Abstract]    
Cash payments 1,100,000  
Maximum common stock shares issued (in shares) 0.1  
Unrecognized compensation cost [Abstract]    
Unrecognized compensation cost related to unvested performance share awards outstanding 6,600,000  
Unrecognized compensation cost, expected weighted average period 1 year 7 months 10 days  
Restricted stock units [Member]
   
Total share-based compensation [Abstract]    
Total share-based compensation 184,000 180,000
Restricted Stock Units [Abstract]    
Equity awards granted (in shares) 0.1  
Equity awards, grant date fair value (in dollars per share) $ 7.19  
Maximum common stock shares issued (in shares) 0.1  
Unrecognized compensation cost [Abstract]    
Unrecognized compensation cost related to unvested restricted stock units outstanding 100,000  
Unrecognized compensation cost related to unvested restricted stock units, expected weighted average period 0 years 1 month 0 days  
Performance award granted February 2014 [Member] | Performance shares [Member]
   
Restricted Stock Units [Abstract]    
Equity awards granted (in shares) 0.2  
Employee performance based target cash awards $ 2,200,000  
Equity awards, grant date fair value (in dollars per share) $ 7.65  
Performance period 3 years  
Minimum percentage of target awards to be earned (in hundredths) 0.00%  
Maximum percentage of target awards to be earned (in hundredths) 200.00%