Equity and Stock Based Compensation Plans (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 27, 2014	Sep. 27, 2014	Dec. 28, 2013
Options, Outstanding [Roll Forward]
Number of Shares Outstanding (Options), Beginning Balance		1,909,039
Number of Shares Outstanding (Options), Exercised		(395,940)
Number of Shares Outstanding (Options), Granted	0	74,300
Number of Shares Outstanding (Options), Cancelled		(104,781)
Number of Shares Outstanding (Options), Ending Balance	1,482,618	1,482,618	1,909,039
Number of Shares Outstanding (Options), Exercisable	1,038,707	1,038,707
Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price, Beginning Balance (in dollars per share)		$ 13.22
Weighted Average Exercise Price, Exercised (in dollars per share)		$ 10.54
Weighted Average Exercise Price, Granted (in dollars per share)		$ 17.56
Weighted Average Exercise Price, Cancelled (in dollars per share)		$ 15.64
Weighted Average Exercise Price, Ending Balance (in dollars per share)	$ 13.98	$ 13.98	$ 13.22
Weighted Average Exercise Price, Exercisable (in dollars per share)	$ 13.03	$ 13.03
Weighed Average Remaining Contractual Term (Years), Outstanding		3 years 7 months 24 days	4 years 0 months 7 days
Weighed Average Remaining Contractual Term (Years), Exercisable		2 years 11 months 1 day
Aggregate Intrinsic Value, Outstanding	$ 3,521	$ 3,521	$ 10,341
Aggregate Intrinsic Value, Exercisable	$ 3,346	$ 3,346