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Basis of Presentation and Recent Accounting Pronouncements (Details)
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3 Months Ended | 4 Months Ended | 9 Months Ended | |||||
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Sep. 30, 2012
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Jul. 08, 2012
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Oct. 02, 2011
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Jul. 10, 2011
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Apr. 15, 2012
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Apr. 17, 2011
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Sep. 30, 2012
item
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Oct. 02, 2011
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| Basis of Presentation and Recent Accounting Pronouncements | ||||||||
| Number of operating segments | 1 | |||||||
| Number of reportable segments | 1 | |||||||
| Length of reporting period | 84 days | 84 days | 84 days | 84 days | 112 days | 112 days | 280 days | 280 days |
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Red Robin's Burger Works
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| Basis of Presentation and Recent Accounting Pronouncements | ||||||||
| Number of restaurants | 5 | 5 | ||||||
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Company-owned operated restaurants
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| Basis of Presentation and Recent Accounting Pronouncements | ||||||||
| Number of restaurants | 336 | 336 | ||||||
| Number of states in which restaurants are located | 32 | 32 | ||||||
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Franchised restaurants
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| Basis of Presentation and Recent Accounting Pronouncements | ||||||||
| Number of restaurants | 132 | 132 | ||||||
| Number of states in which restaurants are located | 21 | 21 | ||||||
| Number of Canadian provinces in which restaurants are located | 2 | 2 | ||||||