General (Details 5) - USD ($) $ in Thousands	Mar. 29, 2018	Dec. 29, 2017	Dec. 28, 2017
Other accrued liabilities	$ 49,239		$ 53,291
Deferred compensation and other	56,640		56,662
Retained earnings	405,434		$ 403,206
Accounting Standards Update 2014-09 [Member]
Other accrued liabilities		$ 56,587
Deferred compensation and other		56,879
Retained earnings		399,693
Restatement Adjustment [Member]
Other accrued liabilities	3,369	3,296
Deferred compensation and other	217	217
Retained earnings	$ (3,586)	$ (3,513)