Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 30, 2017
Statement of Financial Position [Abstract]
Restricted cash	$ 200	$ 0
Allowance for receivable held at escrow	100	0
Allowance for doubtful accounts and returns	500	700
Receivables from related party	$ 700	$ 1,000
Common Stock, Par Value Per Share	$ 0.001	$ 0.001
Common Stock, Shares Authorized	150,000,000	150,000,000
Common Stock, Shares, Issued	55,089,000	56,697,000
Common Stock, Shares, Outstanding	55,089,000	54,697,000