Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.8.0.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 30, 2017
Statement Of Financial Position [Abstract]    
Allowance for doubtful accounts, accounts receivable $ 419 $ 358
Preferred stock, shares authorized 2,000,000 2,000,000
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares outstanding 0 0
Common stock, shares authorized 50,000,000 50,000,000
Common stock, par value $ 0.001 $ 0.001
Common stock, shares issued 31,587,608 27,077,145
Common stock, shares outstanding 31,587,608 27,077,145