CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Oct. 01, 2021	Jan. 01, 2021
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts receivable, current	$ 55	$ 59
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	47,599,000	46,448,000
Common stock, shares outstanding	47,599,000	46,448,000