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Divestitures (Details) - Disposal Group, Not Discontinued Operations
$ in Thousands
Feb. 28, 2014
USD ($)
restaurant
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Count of restaurants sold | restaurant 5
Carrying value $ 1,000
Net assets 610
Allocated goodwill 442
Proceeds from sale of restaurants 1,100
Selling, General and Administrative Expenses  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Gain on disposal $ 100