Valuation and Qualifying Accounts Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 25, 2012	Dec. 27, 2011
Self Insurance Reserve [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Balance	$ 28,903	$ 23,629	$ 20,212
Valuation Allowances and Reserves, Charged to Cost and Expense	46,930	41,807	35,944
Valuation Allowances and Reserves, Deductions	(44,288)	(36,533)	(32,527)
Valuation Allowances and Reserves, Balance	31,545	28,903	23,629
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Balance	1,761	0	0
Valuation Allowances and Reserves, Charged to Cost and Expense	1,412	1,761	0
Valuation Allowances and Reserves, Deductions	0	0	0
Valuation Allowances and Reserves, Balance	$ 3,173	$ 1,761	$ 0