Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 26, 2015	Dec. 27, 2014
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 735	$ 795
PMC special shares convertible into common stock, shares	203,000	278,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	900,000,000	900,000,000
Common stock, shares issued	195,642,000	199,518,000
Common stock, shares outstanding	195,642,000	199,518,000