Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Current:
Federal	$ 8,059	$ 7,261	$ 9,341
State	3,800	2,911	2,265
Foreign	(49)	276	263
Total current income tax expense	11,810	10,448	11,869
Deferred:
Federal	(5,160)	(2,924)	(10,439)
State	(1,474)	(661)	(803)
Total deferred income tax (benefit)	(6,634)	(3,585)	(11,242)
Total income tax expense	$ 5,176	$ 6,863	$ 627