Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2015	Dec. 31, 2014	Dec. 25, 2013
Revenue
Company-operated restaurant revenue	$ 332,040	$ 322,516	$ 294,327
Franchise revenue	23,017	22,345	20,400
Total revenue	355,057	344,861	314,727
Cost of operations
Food and paper costs	105,917	102,611	93,589
Labor and related expenses	84,231	80,646	75,669
Occupancy and other operating expenses	69,977	68,538	63,150
Company restaurant expenses	260,125	251,795	232,408
General and administrative expenses	28,997	29,519	25,506
Franchise expenses	3,456	3,704	3,841
Depreciation and amortization	13,092	11,538	10,213
Loss on disposal of assets	471	646	868
Asset impairment and close-store reserves	92	1,033	(101)
Total expenses	306,233	298,235	272,735
Gain on disposition of restaurants		2,658	400
Income from operations	48,824	49,284	42,392
Interest expense—net of interest income of $49, $63, and $94 for the years ended December 30, 2015, December 31, 2014, and December 25, 2013, respectively	3,707	18,062	36,334
Early extinguishment of debt		9,718	21,530
Secondary offering expense	50	667
Income tax receivable agreement expense	156	41,382
Income (loss) before (provision) benefit for income taxes	44,911	(20,545)	(15,472)
(Provision) benefit for income taxes	(20,857)	63,008	(1,401)
Net income (loss )	$ 24,054	$ 42,463	$ (16,873)
Net income (loss) per share:
Basic	$ 0.63	$ 1.32	$ (0.59)
Diluted	$ 0.62	$ 1.24	$ (0.59)
Weighted average shares used in computing net income (loss) per share:
Basic	37,949,316	32,285,484	28,712,622
Diluted	39,039,558	34,346,241	28,712,622