CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 25, 2024	Dec. 27, 2023
Revenue
Total revenue	$ 490,046	$ 473,008	$ 468,664
Cost of operations
Food and paper cost	100,083	100,725	108,250
Labor and related expenses	127,258	127,179	127,244
Occupancy and other operating expenses	106,386	99,280	101,398
Gain on recovery of insurance proceeds, lost profits, net		(300)	(327)
Company restaurant expenses	333,727	327,184	336,565
General and administrative expenses	50,258	46,270	42,025
Franchise expenses	47,762	42,307	38,404
Depreciation and amortization	15,966	15,717	15,235
Loss on disposal of assets	277	221	192
Gain on recovery of insurance proceeds, property, equipment and expenses		(41)	(247)
Loss (gain) on disposition of restaurants		7	(5,034)
Impairment and closed-store reserves	11	175	1,732
Total expenses	448,001	431,840	428,872
Income from operations	42,045	41,168	39,792
Interest expense, net	4,470	5,899	4,811
Income tax receivable agreement (income) expense		(20)	103
Income before provision for income taxes	37,575	35,289	34,878
Provision for income taxes	11,089	9,605	9,324
Net income	$ 26,486	$ 25,684	$ 25,554
Net income per share
Basic (usd per share)	$ 0.91	$ 0.86	$ 0.75
Diluted (usd per share)	$ 0.9	$ 0.86	$ 0.74
Weighted-average shares used in computing net income per share
Basic (shares)	29,178,940	29,850,256	34,253,542
Diluted (shares)	29,396,890	30,034,978	34,374,706
Company-operated restaurant revenue
Revenue
Total revenue	$ 405,817	$ 396,260	$ 398,437
Franchise revenue
Revenue
Total revenue	52,389	45,561	41,002
Franchise advertising fee revenue
Revenue
Total revenue	$ 31,840	$ 31,187	$ 29,225