Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 04, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Reserves for accounts receivable	$ 798	$ 831
Common stock par value (in dollars per share)	$ 0.002	$ 0.002
Common stock shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	176,608,000	175,790,000
Common stock, shares outstanding (in shares)	176,608,000	175,790,000
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock shares authorized (in shares)	400,000	400,000
Preferred stock shares issued (in shares)	0	0
Preferred stock shares outstanding (in shares)	0	0