Income Taxes (Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Current:
Federal	$ 20,122	$ 15,663	$ 9,501
State	5,418	4,877	3,408
Foreign	662	936	789
Current provision	26,202	21,476	13,698
Deferred:
Federal	4,140	4,002	(35,914)
State	1,634	1,320	2,552
Foreign	235	(1,399)	378
Deferred provision	6,009	3,923	(32,984)
Total income tax expense	$ 32,211	$ 25,399	$ (19,286)