Note 1 - The Company and Basis of Presentation (Details Textual)	Jun. 28, 2015	Dec. 28, 2014
Ruths Chris Steak House [Member] | Entity Operated Units [Member]
Number of Restaurants	66
Ruths Chris Steak House [Member] | Managed [Member]
Number of Restaurants	1
Ruths Chris Steak House [Member] | Franchised Units [Member] | International [Member]
Number of Restaurants	20
Ruths Chris Steak House [Member] | Franchised Units [Member]
Number of Restaurants	79
Ruths Chris Steak House [Member]
Number of Restaurants	146
Mitchells Fish Market [Member] | Company-owned Fish Market Restaurants [Member]
Number of Restaurants		18
Camerons Mitchell Steak house [Member] | Company-owned Fish Market Restaurants [Member]
Number of Restaurants		3