Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

v3.7.0.1
Document And Entity Information - shares
3 Months Ended
Mar. 26, 2017
Apr. 28, 2017
Document Information [Line Items]    
Entity Registrant Name Ruths Hospitality Group, Inc.  
Entity Central Index Key 0001324272  
Trading Symbol ruth  
Current Fiscal Year End Date --12-25  
Entity Filer Category Accelerated Filer  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Well-known Seasoned Issuer No  
Document Type 10-Q  
Document Period End Date Mar. 26, 2017  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Common Stock [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding (in shares)   32,003,044
Unvested Restricted Stock [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding (in shares)   1,310,475