Document And Entity Information	3 Months Ended
	Mar. 24, 2015	Apr. 27, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 24, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	DFRG
Entity Registrant Name	Del Frisco's Restaurant Group, Inc.
Entity Central Index Key	0001415301
Current Fiscal Year End Date	--12-29
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		23,603,465