Income Taxes - Reconciliation of Effective Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Income Tax Disclosure [Abstract]
Federal income tax provision at statutory rate	$ 8,123	$ 6,403	$ 1,022
State income tax provision, net of federal income tax	1,755	1,387	226
Increase (decrease) in deferred tax asset valuation allowance	(216)	(386)	318
Goodwill impairment	0	0	3,879
Tax benefit of equity-based compensation deductions	(7,996)	(10,089)	(25,544)
Other, net	737	376	1,314
Income tax provision (benefit)	$ 2,403	$ (2,309)	$ (18,785)
Effective income tax rate (percent)	6.20%	(7.60%)	(385.90%)