Ruth’s Hospitality Group, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Note 13 - Incentive and Stock Option Plans (Details Textual)

Note 13 - Incentive and Stock Option Plans (Details Textual) - USD ($) $ in Thousands				12 Months Ended
	May 15, 2018	Oct. 26, 2012	May 30, 2008	Dec. 25, 2022	Dec. 26, 2021	Dec. 27, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)				2,400,000
Share-Based Payment Arrangement, Expense				$ 7,900	$ 4,900	$ 8,200
Share-Based Payment Arrangement, Expense, Tax Benefit					$ 165
Employee Service Share Based Compensation Tax Expense From Compensation Expense				29		$ 494
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount				$ 13,000
Restricted Stock [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)				3 years 3 months 18 days
Restricted Stock And Market Stock Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)				947,334
Long Term Equity Incentive Plan 2005 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)		2,000,000.0	1,500,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)	1,649,394
Long Term Equity Incentive Plan 2005 [Member] \| Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)				30,396
Omnibus Incentive Plan 2018 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)	2,500,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)				3 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)				916,938
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)				1,654,859
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)				280,788
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage				100.00%
Omnibus Incentive Plan 2018 [Member] \| Share-Based Payment Arrangement, Tranche One [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)				103,389
Stock Issued During Period Shares Performance Stock Award Gross (in shares)				184,931
Omnibus Incentive Plan 2018 [Member] \| Share-Based Payment Arrangement, Tranche Two [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)				103,389
Omnibus Incentive Plan 2018 [Member] \| Share-Based Payment Arrangement, Tranche Three [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)				66,789
Omnibus Incentive Plan 2018 [Member] \| Share Based Compensation Award Tranche Four [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)				7,220
Omnibus Incentive Plan 2018 [Member] \| Employees and Executive Officers [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)				247,163
Omnibus Incentive Plan 2018 [Member] \| Non Employee [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)				33,625
Stock Issued During Period Shares Performance Stock Award Gross (in shares)				184,931
Minimum [Member] \| Long Term Equity Incentive Plan 2005 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)				1 year
Maximum [Member] \| Long Term Equity Incentive Plan 2005 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)				5 years