Unaudited Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Oct. 03, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Accounts receivable, net of allowance for doubtful accounts of $1,080 and $1,081 as of October 3, 2021 and December 31, 2020, respectively	$ 1,080	$ 1,081