Acquisition Purchase Price Allocation, 2016 Acquisitions (Details) - USD ($) $ in Thousands	Jan. 01, 2017	Jan. 03, 2016	Dec. 28, 2014
Business Acquisition [Line Items]
Inventory	$ 558	$ 544	$ 1,267
Land and building	19,387	22,614	15,955
Restaurant equipment	1,599	2,844	5,818
Restaurant equipment - subject to capital lease	435	443	1,381
Leasehold improvements	2,464	1,770	1,804
Franchise fees	1,121	1,000	3,064
Franchise rights	21,202	20,666	17,098
Favorable leases	390	1,475	2,096
Deferred taxes	216
Goodwill	22,869	20,438	17,793
Capital lease obligation for restaurant equipment	(492)	(494)	(1,458)
Unfavorable leases	(1,152)	(324)	(5,912)
Other liabilities	(71)	(433)	(135)
Purchase price	48,088	$ 52,750	$ 52,200
2016 Acquisitions [Member]
Business Acquisition [Line Items]
Goodwill	$ 2,431

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Franchise Fees

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Franchise Rights

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Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land and Building

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Amount of facility held for productive use including, but not limited to, office, production, storage and distribution facilities, acquired at the acquisition date.

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Amount of capital lease obligation, assumed at the acquisition date.

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Amount of other liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date.

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Amount of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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The amount of inventory recognized as of the acquisition date.

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Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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