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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Jul. 03, 2016
Dec. 31, 2015
Statement of Financial Position [Abstract]    
Reserves for accounts receivable $ 802 $ 736
Common stock, par value $ 0.002 $ 0.002
Common stock, shares authorized 200,000,000 140,000,000
Common stock, shares issued 85,109,000 84,856,000