CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 29, 2015	Mar. 30, 2014
Revenues	$ 108,169us-gaap_Revenues	$ 102,648us-gaap_Revenues
Costs and expenses
Cost of sales	27,906us-gaap_FoodAndBeverageCostOfSales	26,510us-gaap_FoodAndBeverageCostOfSales
Labor	38,850us-gaap_LaborAndRelatedExpense	36,564us-gaap_LaborAndRelatedExpense
Operating	17,522us-gaap_OperatingCostsAndExpenses	16,813us-gaap_OperatingCostsAndExpenses
Occupancy	8,082us-gaap_OccupancyCosts	7,414us-gaap_OccupancyCosts
General and administrative expenses	5,782us-gaap_GeneralAndAdministrativeExpense	5,738us-gaap_GeneralAndAdministrativeExpense
Restaurant preopening costs	937us-gaap_PreOpeningCosts	348us-gaap_PreOpeningCosts
Depreciation and amortization	5,438us-gaap_DepreciationAndAmortization	5,010us-gaap_DepreciationAndAmortization
Total costs and expenses	104,517us-gaap_CostsAndExpenses	98,397us-gaap_CostsAndExpenses
Income from operations	3,652us-gaap_OperatingIncomeLoss	4,251us-gaap_OperatingIncomeLoss
Interest expense, net	405us-gaap_InterestExpense	256us-gaap_InterestExpense
Income before income taxes	3,247	3,995
Income tax expense	714us-gaap_IncomeTaxExpenseBenefit	1,118us-gaap_IncomeTaxExpenseBenefit
Net income	$ 2,533us-gaap_NetIncomeLoss	$ 2,877us-gaap_NetIncomeLoss
Net income per basic share	$ 0.17us-gaap_EarningsPerShareBasic	$ 0.15us-gaap_EarningsPerShareBasic
Net income per diluted share	$ 0.16us-gaap_EarningsPerShareDiluted	$ 0.14us-gaap_EarningsPerShareDiluted
Weighted average shares outstanding-basic	15,122,000	19,314,000
Weighted average shares outstanding-diluted	15,870,000	20,165,000

Total costs of sales and operating expenses for the period.

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