Selected Quarterly Financial and Earnings Data (Unaudited) (Details) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Mar. 30, 2014	Dec. 29, 2013	Sep. 29, 2013	Jun. 30, 2013	Dec. 28, 2014	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Quarterly Financial Information Disclosure [Abstract]
Restaurants Acquired	94us-gaap_NumberOfBusinessesAcquired	25us-gaap_NumberOfBusinessesAcquired	4us-gaap_NumberOfBusinessesAcquired					119us-gaap_NumberOfBusinessesAcquired	123us-gaap_NumberOfBusinessesAcquired		278us-gaap_NumberOfBusinessesAcquired
Acquisition-related costs	$ 1,200,000	$ 400,000	$ 200,000	$ 100,000					$ 1,900,000		$ 1,200,000
Impairment and other lease charges	1,700,000	800,000	400,000	600,000	600,000	1,100,000	2,200,000		3,541,000	4,462,000	977,000
Income tax expense, valuation allowance	$ 24,326,000								$ 24,326,000	$ 624,000	$ 2,063,000

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 25

-Paragraph 23

-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460

+ Details

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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

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- Details

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- Definition

The aggregate amount provided for estimated restructuring charges, remediation costs, and asset impairment loss during an accounting period. Generally, these items are either unusual or infrequent, but not both (in which case they would be extraordinary items).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.3)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

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, charged to costs and expenses.

+ 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

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