Annual report pursuant to Section 13 and 15(d)

Acquisitions of Red Robin Franchised Restaurants (Details)

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Acquisitions of Red Robin Franchised Restaurants (Details) (USD $)
0 Months Ended
Mar. 24, 2014
franchisee
restaurant
Jul. 14, 2014
March 2014, acquisition of four franchise restaurants    
Business Acquisition [Line Items]    
Number of restaurants acquired from franchises 4us-gaap_NumberOfRestaurants
/ us-gaap_BusinessAcquisitionAxis
= rrgb_March2014AcquisitionofFourFranchiseRestaurantsMember
 
Number of franchisees 1rrgb_NumberOfFranchiseesCompanyEnteredIntoAgreementToPurchaseAssetsOfRestaurant
/ us-gaap_BusinessAcquisitionAxis
= rrgb_March2014AcquisitionofFourFranchiseRestaurantsMember
 
Purchase price, cash $ 8,000,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= rrgb_March2014AcquisitionofFourFranchiseRestaurantsMember
 
July 2014, acquisition of 32 Red Robin franchise restaurants    
Business Acquisition [Line Items]    
Number of restaurants acquired from franchises   32us-gaap_NumberOfRestaurants
/ us-gaap_BusinessAcquisitionAxis
= rrgb_Summer2014Acquisitionof32RedRobinFranchisedRestaurantsMember
Purchase price, cash   39,500,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= rrgb_Summer2014Acquisitionof32RedRobinFranchisedRestaurantsMember
Series of business acquisitions, 2014    
Business Acquisition [Line Items]    
Intangible assets   9,394,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= rrgb_SeriesofBusinessAcquisitions2014Member
United States | July 2014, acquisition of 32 Red Robin franchise restaurants    
Business Acquisition [Line Items]    
Number of restaurants acquired from franchises   14us-gaap_NumberOfRestaurants
/ us-gaap_BusinessAcquisitionAxis
= rrgb_Summer2014Acquisitionof32RedRobinFranchisedRestaurantsMember
/ us-gaap_StatementGeographicalAxis
= country_US
Canada | July 2014, acquisition of 32 Red Robin franchise restaurants    
Business Acquisition [Line Items]    
Number of restaurants acquired from franchises   18us-gaap_NumberOfRestaurants
/ us-gaap_BusinessAcquisitionAxis
= rrgb_Summer2014Acquisitionof32RedRobinFranchisedRestaurantsMember
/ us-gaap_StatementGeographicalAxis
= country_CA
Franchise rights | Series of business acquisitions, 2014    
Business Acquisition [Line Items]    
Intangible assets   7,600,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= rrgb_SeriesofBusinessAcquisitions2014Member
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_FranchiseRightsMember
Minimum | Franchise rights | Series of business acquisitions, 2014    
Business Acquisition [Line Items]    
Amortization period of intangible assets   10 years
Maximum | Franchise rights | Series of business acquisitions, 2014    
Business Acquisition [Line Items]    
Amortization period of intangible assets   14 years
Liquor licenses | Series of business acquisitions, 2014    
Business Acquisition [Line Items]    
Intangible assets   $ 1,300,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= rrgb_SeriesofBusinessAcquisitions2014Member
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= rrgb_LiquorLicensesMember