Note 9 - Franchise Operations (Details Textual)	12 Months Ended
	Dec. 25, 2022	Dec. 26, 2021	Dec. 27, 2020	Sep. 25, 2022
Number Of Franchise Restaurants Relocated During Period	1		1
Number Of Franchise Restaurants Opened During Period		2	0
Franchised Units [Member]
Number of Restaurants	74
Franchised Units [Member] | Non-US [Member]
Number of Restaurants	23
Ruths Chris Steak House [Member]
Royalty of Sales Percentage	5.00%
Advertising Fee Percentage	1.00%
Number of Restaurants	154	150		154
Ruths Chris Steak House [Member] | Franchised Units [Member]
Number of Restaurants	74	74		74
Ruths Chris Steak House [Member] | Franchised Units [Member] | Non-US [Member]
Number of Restaurants	23