Related Party Transactions (Details) (USD $)	12 Months Ended			3 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012	Dec. 28, 2013
Related Party Transaction [Line Items]
Operating lease rent expense	$ 31,100,000	$ 26,600,000	$ 25,600,000
Future lease payments	105,187,000
Building [Member] | Executives [Member]
Related Party Transaction [Line Items]
Lease term (years)				10 years
Operating lease rent expense	500,000	100,000
Future lease payments	$ 4,700,000