Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenue:
Restaurant revenue	$ 112,865	$ 104,782
Franchising royalties and fees	1,121	979
Total revenue	113,986	105,761
Restaurant operating costs (exclusive of depreciation and amortization shown separately below):
Cost of sales	30,189	27,812
Labor	37,434	33,029
Occupancy	13,314	12,218
Other restaurant operating costs	16,892	14,717
General and administrative	10,037	8,418
Depreciation and amortization	6,906	6,919
Pre-opening	1,037	880
Restaurant impairment, closure costs and asset disposals	1,016	6,086
Total costs and expenses	116,825	110,079
Loss from operations	(2,839)	(4,318)
Interest expense	628	229
Loss before income taxes	(3,467)	(4,547)
Benefit for income taxes	(1,094)	(1,795)
Net loss	$ (2,373)	$ (2,752)
Loss per share of Class A and Class B common stock, combined:
Basic (USD per share)	$ (0.09)	$ (0.09)
Diluted (USD per share)	$ (0.09)	$ (0.09)
Weighted average shares of Class A and Class B common stock outstanding, combined:
Basic (in shares)	27,721,792	29,843,204
Diluted (in shares)	27,721,792	29,843,204