| Acquisition of Red Robin Franchised Restaurants (Tables) | 6 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Jul. 13, 2014 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Business Combinations [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of purchase price allocated | The Company preliminary allocated the purchase price to the fair value of the assets acquired and liabilities assumed as follows (in thousands): 
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- Details 
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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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