EARNINGS PER SHARE - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Reconciliation of shares for basic and diluted net income per share
Net income	$ 56,231	$ 33,482	$ 86,754	$ 41,962
Weighted-average common shares outstanding—basic	87,327	86,937	87,253	86,883
Effect of dilutive securities (in shares)	1,325	540	1,309	586
Weighted-average common shares outstanding—diluted	88,652	87,477	88,561	87,469
Earnings per share
Basic (in dollars per share)	$ 0.64	$ 0.39	$ 0.99	$ 0.48
Diluted (in dollars per share)	$ 0.63	$ 0.38	$ 0.98	$ 0.48