Stock-Based Compensation (Employee Share Purchase Plan) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Proceeds from issuance of common shares	$ 1,309	$ 5,034	$ 1,486
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options	4,028,729
Employee Stock Option [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock Issued During Period, Shares, Employee Stock Ownership Plan	112,158	61,796	82,841
Proceeds from issuance of common shares	$ 600	$ 400	$ 400
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options	999,915