Consolidated Statements Of Cash Flows (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Consolidated Statements of Cash Flows [Abstract]
Income taxes paid	$ 6,500	$ 13,000	$ 31,000
Interest paid	$ 383	$ 973	$ 141