CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Oct. 03, 2020	Oct. 02, 2020	Jan. 03, 2020
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts receivable, current		$ 131	$ 88
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Common stock, shares authorized	60,000,000		60,000,000
Common stock, shares issued	46,072,000		44,822,000
Common stock, shares outstanding	46,072,000		44,822,000