Segment Reporting (Schedule Of Segment Reporting Information By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended						4 Months Ended		12 Months Ended
	Sep. 06, 2016	Jun. 14, 2016	Mar. 22, 2016	Sep. 08, 2015	Jun. 16, 2015	Mar. 24, 2015	Dec. 27, 2016	Dec. 29, 2015	Dec. 27, 2016	Dec. 29, 2015	Dec. 30, 2014
Segment Reporting Information [Line Items]
Revenues	$ 71,407	$ 79,916	$ 81,194	$ 68,629	$ 73,776	$ 75,102	$ 119,164	$ 114,105	$ 351,681	$ 331,612	$ 301,805
Restaurant-level EBITDA									74,940	71,567	66,951
Capital expenditures									36,950	48,109	48,002
Property and equipment							284,182	253,950	284,182	253,950	213,442
Del Frisco's [Member]
Segment Reporting Information [Line Items]
Revenues									166,885	161,809	151,142
Restaurant-level EBITDA									46,877	45,837	42,946
Capital expenditures									17,284	11,646	19,839
Property and equipment							115,889	104,508	115,889	104,508	93,267
Sullivan's [Member]
Segment Reporting Information [Line Items]
Revenues									77,797	78,983	80,911
Restaurant-level EBITDA									12,182	13,070	13,449
Capital expenditures									2,489	3,644	3,452
Property and equipment							49,416	47,578	49,416	47,578	45,848
Grille [Member]
Segment Reporting Information [Line Items]
Revenues									106,999	90,820	69,752
Restaurant-level EBITDA									15,881	12,660	10,556
Capital expenditures									17,080	32,717	24,219
Property and equipment							116,451	99,371	116,451	99,371	72,066
Corporate [Member]
Segment Reporting Information [Line Items]
Capital expenditures									97	102	492
Property and equipment							$ 2,426	$ 2,493	$ 2,426	$ 2,493	$ 2,261