Shareholders' Deficit - Components of Basic and Diluted Net Income per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Share-based Payment Arrangement [Abstract]
Net income	$ 139,189	$ 81,845	$ 69,539
Basic weighted-average shares outstanding (in shares)	27,665	29,472	35,256
Dilutive effect of stock-based awards (in shares)	763	883	909
Diluted weighted-average shares outstanding (in shares)	28,428	30,355	36,165
Net income - basic (in dollars per share)	$ 5.03	$ 2.78	$ 1.97
Net income - diluted (in dollars per share)	$ 4.90	$ 2.70	$ 1.92
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	200	200	200