Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 30, 2017
Statement of Financial Position [Abstract]
Allowance for doubtful accounts and returns	$ 500	$ 700
Receivables from related party	$ 700	$ 1,500
Common Stock, Par Value Per Share	$ 0.001	$ 0.001
Common Stock, Shares Authorized	150,000	150,000
Common Stock, Shares, Issued	54,919	54,697
Common Stock, Shares, Outstanding	54,919	54,697