Basic and Diluted Net Income Per Share - Summary of Computation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2021	Oct. 02, 2020	Oct. 01, 2021	Oct. 02, 2020
Numerator:
Net income	$ 6,020	$ 3,892	$ 19,579	$ 2,586
Weighted average common shares:
Common shares outstanding	47,486	45,914	47,067	45,405
Less: Unvested restricted stock	(3)	(11)	(3)	(11)
Denominator for basic calculation	47,483	45,903	47,064	45,394
Weighted average effects of potentially diluted common stock:
Diluted	49,592	48,180	49,448	47,589
Net income per share:
Basic	$ 0.13	$ 0.08	$ 0.42	$ 0.06
Diluted	$ 0.12	$ 0.08	$ 0.40	$ 0.05
Employee Stock Options
Weighted average effects of potentially diluted common stock:
Diluted	2,013	2,208	2,277	2,124
Unvested Restricted Stock
Weighted average effects of potentially diluted common stock:
Diluted			6	5
RSUs
Weighted average effects of potentially diluted common stock:
Diluted	86	68	90	66
Performance Stock Units
Weighted average effects of potentially diluted common stock:
Diluted	10	1	11