Consolidated Statements Of Income And Comprehensive Income (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 30, 2014	Dec. 31, 2013	Dec. 25, 2012
Consolidated Statements Of Income And Comprehensive Income [Abstract]
Revenues	$ 301,805us-gaap_Revenues	$ 271,806us-gaap_Revenues	$ 232,435us-gaap_Revenues
Costs and expenses:
Costs of sales	90,990us-gaap_CostOfRevenue	82,209us-gaap_CostOfRevenue	71,093us-gaap_CostOfRevenue
Restaurant operating expenses	137,695us-gaap_OperatingCostsAndExpenses	121,825us-gaap_OperatingCostsAndExpenses	100,143us-gaap_OperatingCostsAndExpenses
Marketing and advertising costs	6,169us-gaap_MarketingAndAdvertisingExpense	5,663us-gaap_MarketingAndAdvertisingExpense	4,682us-gaap_MarketingAndAdvertisingExpense
Pre-opening costs	4,735us-gaap_PreOpeningCosts	3,758us-gaap_PreOpeningCosts	4,058us-gaap_PreOpeningCosts
General and administrative costs	20,537us-gaap_GeneralAndAdministrativeExpense	17,421us-gaap_GeneralAndAdministrativeExpense	13,449us-gaap_GeneralAndAdministrativeExpense
Management and accounting fees paid to related party			1,252us-gaap_CostsAndExpensesRelatedParty
Asset advisory agreement termination fee			3,000dfrg_AdvisoryAgreementTerminationFee
Secondary public offering costs	5dfrg_CommonStockIssuanceCost	1,024dfrg_CommonStockIssuanceCost
Public offering transaction bonuses		8,355dfrg_RelatedPartyTransactionBonus	1,462dfrg_RelatedPartyTransactionBonus
Non-cash impairment charges	3,536us-gaap_AssetImpairmentCharges	2,360us-gaap_AssetImpairmentCharges
Depreciation and amortization	13,598us-gaap_DepreciationAndAmortization	11,300us-gaap_DepreciationAndAmortization	8,675us-gaap_DepreciationAndAmortization
Operating income	24,540us-gaap_OperatingIncomeLoss	17,891us-gaap_OperatingIncomeLoss	24,621us-gaap_OperatingIncomeLoss
Other income (expense), net:
Interest expense	(113)us-gaap_InterestExpense	(72)us-gaap_InterestExpense	(2,920)us-gaap_InterestExpense
Write-off of debt issuance costs			(1,649)
Other, net	(107)us-gaap_OtherNonoperatingIncomeExpense	(51)us-gaap_OtherNonoperatingIncomeExpense	113us-gaap_OtherNonoperatingIncomeExpense
Income from continuing operations before income taxes	24,320	17,768	20,165
Income tax expense	7,723us-gaap_IncomeTaxExpenseBenefit	5,556us-gaap_IncomeTaxExpenseBenefit	5,592us-gaap_IncomeTaxExpenseBenefit
Income from continuing operations	16,597	12,212	14,573
Discontinued operations, net of income tax benefit			(819)
Net income	16,597us-gaap_NetIncomeLoss	12,212us-gaap_NetIncomeLoss	13,754us-gaap_NetIncomeLoss
Basic income (loss) per common share:
Continuing operations	$ 0.71	$ 0.51	$ 0.71
Discontinued operations			$ (0.04)
Basic income per common share	$ 0.71us-gaap_EarningsPerShareBasic	$ 0.51us-gaap_EarningsPerShareBasic	$ 0.67us-gaap_EarningsPerShareBasic
Diluted income (loss) per common share:
Continuing operations	$ 0.70	$ 0.51	$ 0.71
Discontinued operations			$ (0.04)
Diluted income per common share	$ 0.70us-gaap_EarningsPerShareDiluted	$ 0.51us-gaap_EarningsPerShareDiluted	$ 0.67us-gaap_EarningsPerShareDiluted
Shares used in computing net income (loss) per common share:
Basic	23,517,883	23,779,782	20,432,579
Diluted	23,740,318	23,852,200	20,432,579
Comprehensive income	$ 16,597us-gaap_ComprehensiveIncomeNetOfTax	$ 12,212us-gaap_ComprehensiveIncomeNetOfTax	$ 13,754us-gaap_ComprehensiveIncomeNetOfTax

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