Parent Company Condensed Statements of Income (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended						4 Months Ended		12 Months Ended
	Sep. 08, 2013	Jun. 16, 2013	Mar. 24, 2013	Sep. 09, 2012	Jun. 17, 2012	Mar. 25, 2012	Dec. 29, 2013	Dec. 30, 2012	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Total revenues	$ 404,050	$ 414,009	$ 417,617	$ 378,077	$ 376,124	$ 384,587	$ 566,547	$ 539,651	$ 1,802,223	$ 1,678,439	$ 1,652,193
INCOME FROM OPERATIONS									313,811	282,331	259,145
INCOME BEFORE PROVISION FOR INCOME TAXES	46,453	53,445	54,622	40,969	45,113	34,799	70,579	60,306	225,099	181,187	167,806
PROVISION FOR INCOME TAXES									(82,114)	(68,795)	(62,445)
NET INCOME	30,632	33,270	34,420	25,976	28,095	20,742	44,663	37,579	142,985	112,392	105,361
COMPREHENSIVE INCOME									143,387	112,407	105,700
EARNINGS PER SHARE:
Common Stock - basic	$ 0.56	$ 0.60	$ 0.62	$ 0.46	$ 0.50	$ 0.36	$ 0.81	$ 0.67	$ 2.58	$ 1.99	$ 1.79
Common Stock - diluted	$ 0.53	$ 0.57	$ 0.59	$ 0.44	$ 0.47	$ 0.35	$ 0.78	$ 0.64	$ 2.48	$ 1.91	$ 1.71
Parent Company
REVENUES
Total revenues
OPERATING EXPENSES
Total operating expenses
INCOME FROM OPERATIONS
Equity earnings in subsidiaries									142,985	112,392	105,361
INCOME BEFORE PROVISION FOR INCOME TAXES									142,985	112,392	105,361
PROVISION FOR INCOME TAXES
NET INCOME									142,985	112,392	105,361
COMPREHENSIVE INCOME									$ 143,387	$ 112,407	$ 105,700
EARNINGS PER SHARE:
Common Stock - basic									$ 2.58	$ 1.99	$ 1.79
Common Stock - diluted									$ 2.48	$ 1.91	$ 1.71