CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 27, 2014	Dec. 28, 2013	Sep. 28, 2013
Statement of Financial Position [Abstract]
Preferred stock; par value	$ 0.01	$ 0.01	$ 0.01
Preferred stock; shares authorized	100,000	100,000	100,000
Preferred stock; issued	0	0	0
Preferred stock; outstanding	0	0	0
Common stock, voting; par value	$ 0.01	$ 0.01	$ 0.01
Common stock, voting; shares authorized	150,000,000	150,000,000	150,000,000
Common stock voting; shares issued	52,977,519	54,541,879	54,542,594
Common stock voting; shares outstanding	52,977,519	54,541,879	54,542,594