Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

Document And Entity Information - shares
3 Months Ended
Mar. 26, 2023
Apr. 28, 2023
Document Information [Line Items]    
Entity Central Index Key 0001324272  
Entity Registrant Name Ruths Hospitality Group, Inc.  
Amendment Flag false  
Current Fiscal Year End Date --12-24  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2022  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 26, 2023  
Document Transition Report false  
Entity File Number 000-51485  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 72-1060618  
Entity Address, Address Line One 1030 W. Canton Avenue, Suite 100  
Entity Address, City or Town Winter Park  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 32789  
City Area Code 407  
Local Phone Number 333-7440  
Title of 12(b) Security Common Stock, par value $0.01 per share  
Trading Symbol RUTH  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   32,132,941