Insurance Reserves (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012
Insurance Reserves
Balance at the beginning of the period	$ 22,303	$ 19,278
Expense	23,187	27,728
Payments	(26,025)	(24,703)
Balance at the end of the period	$ 19,465	$ 22,303