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Share-Based Compensation (Stock Options) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 26, 2012
Options:  
Outstanding, beginning of year (shares) 4,140
Granted (shares) 0
Exercised (shares) (843)
Forfeited (shares) (161)
Expired (shares) (37)
Outstanding, end of year (shares) 3,099
Exercisable, end of year (shares) 2,394
Weighted-Average Exercise Price:  
Outstanding, beginning of year (US$ per share) $ 3.15
Granted (US$ per share) $ 0.00
Exercised (US$ per share) $ 2.59
Forfeited (US$ per share) $ 3.52
Expired (US$ per share) $ 4.02
Outstanding, end of year (US$ per share) $ 3.28
Exercisable, end of year (US$ per share) $ 3.22
Weighted-Average Remaining Contractual Life and Aggregate Intrinsic Value:  
Outstanding, end of year, weighted-average remaining contractual life 5 years 3 months 29 days
Exercisable, end of year, weighted-average remaining contractual life 4 years 7 months 2 days
Outstanding, end of year, aggregate intrinsic value $ 4,802
Exercisable, end of year, aggregate intrinsic value $ 3,870