Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 27, 2016	Dec. 29, 2015	Dec. 30, 2014
Cash flows from operations:
Net Income	$ 145,241,000	$ 149,325,000	$ 179,293,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	154,355,000	135,398,000	124,109,000
Stock-based compensation expense	15,662,000	15,086,000	10,077,000
Tax benefit from stock-based compensation	(2,456,000)	(2,057,000)	(3,089,000)
Deferred income taxes	(3,800,000)	(10,991,000)	10,459,000
Refranchising loss	7,212,000	12,942,000	0
Other	10,551,000	3,505,000	4,617,000
Changes in operating assets and liabilities, excluding the effect of acquisitions and dispositions:
Trade and other accounts receivable, net	66,000	(3,605,000)	(22,139,000)
Inventories	(977,000)	(1,698,000)	(895,000)
Prepaid expenses and other	(9,923,000)	(7,191,000)	(8,524,000)
Deposits and other	1,625,000	(455,000)	239,000
Accounts payable	2,650,000	(183,000)	1,978,000
Accrued expenses	63,531,000	31,169,000	35,288,000
Deferred rent	366,000	3,751,000	1,067,000
Other long-term liabilities	3,438,000	(6,951,000)	2,599,000
Net cash provided by operating activities	387,541,000	318,045,000	335,079,000
Cash flows from investing activities:
Additions to property and equipment	(200,063,000)	(223,932,000)	(224,217,000)
Proceeds from (Repayments of) Notes Payable	216,000	0	0
Proceeds from refranchising	15,649,000	46,869,000	0
Proceeds from sale of property and equipment	742,000	1,553,000	0
Proceeds from sale-leaseback transactions	8,940,000	10,095,000	12,900,000
Net cash used in investing activities	(174,516,000)	(165,415,000)	(211,317,000)
Cash flows from financing activities:
Repayments of long-term debt	(18,683,000)	(6,301,000)	0
Proceeds from issuance of long-term debt	0	299,070,000	100,000,000
Proceeds from borrowings under revolving credit facility	40,000,000	0	0
Capitalized debt issuance costs	0	(363,000)	(193,000)
Payment of Deferred Acquisition Holdback	0	0	(270,000)
Repurchase of common stock	(377,193,000)	(405,513,000)	(159,503,000)
Exercise of employee stock options	381,000	288,000	1,116,000
Tax benefit from stock-based compensation	2,456,000	2,057,000	3,089,000
Proceeds from issuance of common stock under employee benefit plans	3,702,000	3,525,000	3,247,000
Distribution to redeemable noncontrolling interest	(45,000)	0	0
Net cash used in financing activities	(349,382,000)	(107,237,000)	(52,514,000)
Net (decrease) increase in cash and cash equivalents	(136,357,000)	45,393,000	71,248,000
Cash and cash equivalents at beginning of period	241,886,000	196,493,000	125,245,000
Cash and cash equivalents at end of period	$ 105,529,000	$ 241,886,000	$ 196,493,000