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Stockholders’ Equity (Details 4)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 30, 2016
USD ($)
$ / shares
shares
Schedule of Employee Service Share-based Compensation [Line Items]  
Options,Outstanding at January 1, 2016 | shares 3,623
Options, Granted, Shares | shares 781
Options, Exercised, Shares | shares (541)
Options, Forfeited or expired, Shares | shares (361)
Options,Outstanding at December 30, 2016 | shares 3,502
Options,Exercisable at December 30, 2016 | shares 2,840
Weighted Average Exercise Price, Options Outstanding at January 1, 2016 | $ / shares $ 8.02
Weighted Average Exercise Price, Options, Granted | $ / shares 7.32
Weighted Average Exercise Price,Options, Exercised | $ / shares 4.51
Weighted Average Exercise Price, Options, Forfeited and Expired | $ / shares 9.23
Weighted Average Exercise Price, Options Outstanding at December 30, 2016 | $ / shares 8.28
Weighted Average Exercise Price, Options Exercisable at December 30, 2016 | $ / shares $ 8.47
Weighted Average Remaining Contractual Term, Options, Outstanding at January 1, 2016 6 years 9 months
Weighted Average Remaining Contractual Term, Options, Exercisable at January 1, 2016 6 years 1 month 28 days
Aggregate Intrinsic Value, Options, Outstanding at January 1, 2016 | $ $ 11,010
Aggregate Intrinsic Value, Options, Exercisable at January 1, 2016 | $ $ 8,765