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Share-Based Compensation (Stock Options) (Details) - Stock Options [Member]
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 28, 2016
USD ($)
$ / shares
shares
Options [Roll Forward]:  
Outstanding, beginning of year | shares 1,338
Exercised | shares (211)
Outstanding, end of year | shares 1,127
Exercisable, end of year | shares 1,127
Weighted-Average Exercise Price [Roll Forward]:  
Outstanding, beginning of year | $ / shares $ 3.20
Exercised | $ / shares 4.22
Outstanding, end of year | $ / shares 3.01
Exercisable, end of year | $ / shares $ 3.01
Weighted-Average Remaining Contractual Life and Aggregate Intrinsic Value:  
Outstanding, end of year, weighted-average remaining contractual life 2 years 10 months 25 days
Exercisable, end of year, weighted-average remaining contractual life 2 years 10 months 25 days
Outstanding, end of year, aggregate intrinsic value | $ $ 11,110
Exercisable, end of year, aggregate intrinsic value | $ $ 11,110