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Acquisition of Businesses (Schedule of Non-Significant Acquisitions) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill | $ 7,078 | $ 7,119 |
Franchised Restaurants [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Property and equipment | 429 | 0 | $ 936
Identifiable intangible assets | 5,346 | 0 | 853
Goodwill | 200 | 0 | 1,621
Assumed debt | 0 | 0 | (206)
Gain on purchase of franchised restaurants | (4,808) | 0 | 0
Purchase price | 1,167 | 0 | 3,204
Restaurants sold in exchange | (261) | 0 | 0
Settlement of franchise receivables | (36) | 0 | (2,113)
Net cash paid at acquisition date | $ 870 | $ 0 | $ 1,091

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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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