Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jul. 05, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Reserves for accounts receivable	$ 752	$ 820
Common stock, par value	$ 0.002	$ 0.002
Common stock, shares authorized	140,000,000	140,000,000
Common stock, shares issued	87,102	86,542,000