Red Robin Gourmet Burgers, Inc. Annual report pursuant to Section 13 and 15(d)

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	4
Number of franchisees	1
Purchase price, cash	$ 8,000,000
July 2014, acquisition of 32 Red Robin franchise restaurants
Business Acquisition [Line Items]
Number of restaurants acquired from franchises		32
Purchase price, cash		39,500,000
Series of business acquisitions, 2014
Business Acquisition [Line Items]
Intangible assets		9,394,000
United States \| July 2014, acquisition of 32 Red Robin franchise restaurants
Business Acquisition [Line Items]
Number of restaurants acquired from franchises		14
Canada \| July 2014, acquisition of 32 Red Robin franchise restaurants
Business Acquisition [Line Items]
Number of restaurants acquired from franchises		18
Franchise rights \| Series of business acquisitions, 2014
Business Acquisition [Line Items]
Intangible assets		7,600,000
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		$ 1,300,000