EARNINGS PER SHARE - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Reconciliation of shares for basic and diluted net income per share
Net income	$ 8,480	$ 2,167
Weighted average common shares outstanding—basic (in shares)	86,830	84,196
Effect of dilutive securities (in shares)	631	1,661
Weighted average common shares outstanding—diluted (in shares)	87,461	85,857
Earnings per share
Basic (in dollars per share)	$ 0.10	$ 0.03
Diluted (in dollars per share)	$ 0.10	$ 0.03