Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jan. 01, 2022	Dec. 26, 2020
Statement Of Financial Position [Abstract]
Allowances for doubtful accounts	$ 1,303	$ 784
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	3,000,000	3,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	97,000,000	97,000,000
Common stock, shares issued	49,300,000	48,758,000
Common stock, shares outstanding	49,300,000	48,758,000