Stock-Based Compensation (Details 3) shares in Thousands	6 Months Ended
	Jun. 30, 2017 shares
Schedule of Employee Service Share-based Compensation [Line Items]
Options, Outstanding at December 30, 2016	3,502
Options, Granted, Shares	794
Options, Exercised, Shares	(288)
Options, Forfeited or expired, Shares	(73)
Options, Outstanding at June 30, 2017	3,935
Options, Exercisable at June 30, 2017	2,819