Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 25, 2018	Mar. 26, 2017
Revenues:
Revenue	$ 785,371	$ 624,217
Cost of sales:
Cost of sales	485,506	430,401
Operating margin	299,865	193,816
General and administrative	84,178	77,782
Income from operations	133,476	116,034
Interest income	480	111
Interest expense	(30,286)	(25,631)
Income before provision for income taxes	103,670	90,514
Provision for income taxes	14,843	28,045
Net income	$ 88,827	$ 62,469
Earnings per share:
Common stock - basic	$ 2.07	$ 1.31
Common stock - diluted	2.00	1.26
Dividends declared per share	$ 0.55	$ 0.46
Domestic Stores [Member] | Domestic Company Owned Stores [Member]
Revenues:
Revenue	$ 121,186	$ 113,545
Cost of sales:
Cost of sales	93,038	87,184
Domestic Stores [Member] | Domestic Franchise Royalties and Fees [Member]
Revenues:
Revenue	89,490	79,901
Domestic Stores [Member] | Domestic Franchise Advertising [Member]
Revenues:
Revenue	82,211
Cost of sales:
Domestic franchise advertising	82,211
Supply Chain [Member]
Revenues:
Revenue	440,063	388,553
Cost of sales:
Cost of sales	392,468	343,217
International Franchise [Member] | International Franchise Royalties and Fees [Member]
Revenues:
Revenue	$ 52,421	$ 42,218