Note 2 - Summary of Significant Accounting Policies (Details) (USD $)
3 Months Ended 12 Months Ended
Dec. 29, 2013
Mar. 25, 2012
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Dec. 25, 2011
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Increase (Decrease) in Gift Card Liability $ 2,200,000          
Revenue Recognition, Gift Cards, Breakage     2,600,000 804,000 1,900,000  
Cash and Cash Equivalents, at Carrying Value 10,586,000   4,301,000 10,586,000 7,909,000 3,925,000
Payments of Financing Costs     0 0 610,000  
Amortization of Financing Costs     421,000 421,000 476,000  
Write off of Deferred Debt Issuance Cost   807,000 0 0 807,000  
Franchise Revenue     15,763,000 15,012,000 13,836,000  
Advertising Expense     6,100,000 6,100,000 5,800,000  
Payments to Acquire Businesses, Gross     2,800,000      
Goodwill 22,097,000   24,293,000 22,097,000    
Franchised Units [Member] | International [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Number of Restaurants     20      
Building and Building Improvements [Member] | Minimum [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Property, Plant and Equipment, Useful Life     20 years      
Building and Building Improvements [Member] | Maximum [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Property, Plant and Equipment, Useful Life     40 years      
Equipment [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Property, Plant and Equipment, Useful Life     5 years      
Furniture and Fixtures [Member] | Minimum [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Property, Plant and Equipment, Useful Life     5 years      
Furniture and Fixtures [Member] | Maximum [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Property, Plant and Equipment, Useful Life     7 years      
Computer Equipment [Member] | Minimum [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Property, Plant and Equipment, Useful Life     3 years      
Computer Equipment [Member] | Maximum [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Property, Plant and Equipment, Useful Life     5 years      
Leasehold Improvements [Member] | Minimum [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Property, Plant and Equipment, Useful Life     5 years      
Leasehold Improvements [Member] | Maximum [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Property, Plant and Equipment, Useful Life     20 years      
Franchise Operations [Member] | International [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Franchise Revenue     3,200,000 3,000,000 2,700,000  
Outstanding Checks [Member] | Accounts Payable and Accrued Payroll [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Cash and Cash Equivalents, at Carrying Value 10,100,000   7,600,000 10,100,000    
Ruth's Chris Steak House Franchise in Austin, Texas [Member]            
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]            
Payments to Acquire Businesses, Gross     2,800,000      
Goodwill     2,200,000      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment     259,000      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets     $ 368,000