Net Income Per Share (Calculation Of Basic And Diluted Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended	9 Months Ended
	Dec. 24, 2016	Sep. 24, 2016	Jun. 25, 2016	Dec. 26, 2015	Sep. 24, 2016	Dec. 24, 2016	Dec. 26, 2015
Net Income Per Share [Abstract]
Net income	$ 122,041	$ 86,039	$ 18,071	$ 41,384	$ 104,110	$ 226,151	$ 109,618
Basic weighted average common shares outstanding	63,837			63,328		63,025	63,316
Effect of dilutive securities	2,911			2,433		3,353	2,868
Diluted weighted average common shares outstanding	66,748	66,410	65,723	65,761	66,101	66,378	66,184
Basic earnings per share	$ 1.91	$ 1.37	$ 0.29	$ 0.65	$ 1.66	$ 3.59	$ 1.73
Diluted earnings per share	$ 1.83	$ 1.30	$ 0.27	$ 0.63	$ 1.58	$ 3.41	$ 1.66