CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 27, 2016	Sep. 29, 2015
Cash flows from operating activities:
Net income	$ 107,113	$ 89,323
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization expenses	64,559	63,652
Deferred income taxes	564	675
Impairment of assets and lease terminations		6,011
Stock-based compensation	16,177	14,549
Tax impact of stock options exercised, net of cancellations	8,450	11,647
Excess tax benefit related to stock options exercised	(8,521)	(11,660)
Other	2,945	2,072
Changes in assets and liabilities:
Accounts receivable	209	4,304
Other receivables	41,893	27,323
Inventories	(1,531)	(3,487)
Prepaid expenses	5,639	(5,847)
Other assets	(2,201)	(4,537)
Accounts payable	(4,526)	(14,858)
Income taxes receivable/payable	18,280	1,352
Other accrued expenses	(32,520)	(19,433)
Cash provided by operating activities	216,530	161,086
Cash flows from investing activities:
Additions to property and equipment	(70,607)	(108,593)
Additions to intangible assets	(1,294)	(1,276)
Cash used in investing activities	(71,901)	(109,869)
Cash flows from financing activities:
Deemed landlord financing proceeds	2,673	3,774
Deemed landlord financing payments	(2,705)	(2,278)
Borrowings on credit facility		25,000
Repayments on credit facility		(25,000)
Proceeds from exercise of stock options	18,923	25,448
Excess tax benefit related to stock options exercised	8,521	11,660
Cash dividends paid	(31,049)	(26,207)
Treasury stock purchases	(119,001)	(92,025)
Cash used in financing activities	(122,638)	(79,628)
Net change in cash and cash equivalents	21,991	(28,411)
Cash and cash equivalents at beginning of period	43,854	58,018
Cash and cash equivalents at end of period	65,845	29,607
Supplemental disclosures:
Interest paid	4,719	4,418
Income taxes paid	12,769	19,215
Construction payable	$ 9,161	$ 11,865