Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2019	Dec. 26, 2018	Dec. 27, 2017
Revenue
Total revenue	$ 442,330	$ 435,828	$ 401,701
Cost of operations
Food and paper costs	109,264	111,142	109,898
Labor and related expenses	116,703	112,417	106,584
Occupancy and other operating expenses	92,005	91,385	85,631
Company restaurant expenses	317,972	314,944	302,113
General and administrative expenses	40,389	50,261	38,523
Legal settlements	0	36,258	0
Franchise expenses	27,612	24,429	3,335
Depreciation and amortization	17,855	17,825	18,128
Loss on disposal of assets	266	278	799
Recovery of securities lawsuits related legal expenses	(10,000)	(8,356)	(1,666)
Impairment and closed-store reserves	4,852	9,650	33,645
Total expenses	404,004	445,289	394,877
Gain on disposition of restaurants	5,058	0	0
Income (loss) from operations	38,326	(9,461)	6,824
Interest expense, net	3,687	3,502	3,278
Income tax receivable agreement expense (income)	57	(761)	(5,570)
Income (loss) before provision (benefit) for income taxes	34,582	(12,202)	9,116
Provision (benefit) for income taxes	9,682	(3,208)	497
Net income (loss)	$ 24,900	$ (8,994)	$ 8,619
Net income (loss) per share:
Basic (usd per share)	$ 0.68	$ (0.23)	$ 0.22
Diluted (usd per share)	$ 0.67	$ (0.23)	$ 0.22
Weighted average shares used in computing net income (loss) per share:
Basic (shares)	36,739,209	38,574,553	38,453,347
Diluted (shares)	37,441,503	38,574,553	39,086,676
Company-operated restaurant revenue
Revenue
Total revenue	$ 391,112	$ 388,835	$ 376,615
Franchise revenue
Revenue
Total revenue	28,819	25,771	25,086
Franchise advertising fee revenue
Revenue
Total revenue	$ 22,399	$ 21,222	$ 0