Valuation and Qualifying Accounts Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
Dec. 30, 2014	Dec. 31, 2013	Dec. 25, 2012
Self Insurance Reserve [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Balance	$ 31,545,000	$ 28,903,000	$ 23,629,000
Valuation Allowances and Reserves, Charged to Cost and Expense	50,729,000	46,930,000	41,807,000
Valuation Allowances and Reserves, Deductions	(49,715,000)	(44,288,000)	(36,533,000)
Valuation Allowances and Reserves, Balance	32,559,000	31,545,000	28,903,000
Valuation Allowance of Deferred Tax Assets [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation Allowances and Reserves, Balance	3,173,000	1,761,000	0
Valuation Allowances and Reserves, Charged to Cost and Expense	1,452,000	1,412,000	1,761,000
Valuation Allowances and Reserves, Deductions	0	0	0
Valuation Allowances and Reserves, Balance	$ 4,625,000	$ 3,173,000	$ 1,761,000

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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

+ Details

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- Definition

+ References

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- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

+ References

+ Details

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