CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Oct. 25, 2014	Oct. 26, 2013
Operating activities:
Net income	$ 104,067	$ 87,920
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	13,274	13,341
Amortization	11,410	9,700
Bad debt expense	1,153	1,362
Non-cash employee compensation	13,694	13,568
Excess tax benefits from stock-based compensation	(175)	(832)
Non-cash charges related to medical divestitures		5,114
Other changes from operating activities, net	(45,028)	(37,019)
Net cash provided by operating activities	98,395	93,154
Investing activities:
Additions to property and equipment, net of acquisitions	(30,186)	(17,444)
Acquisitions and equity investments, net of cash		(140,963)
Proceeds from sale of assets	46,369	6,546
Other investing activities	(543)	(4,436)
Net cash provided by (used in) investing activities	15,640	(156,297)
Financing activities:
Dividends paid	(40,174)	(48,388)
Repurchases of common stock	(47,539)	(22,199)
ESOP activity	(1,151)	(965)
Common stock issued, net	1,820	8,647
Payment on revolver	(130,000)
Draw on revolver	130,000	135,000
Excess tax benefits from stock-based compensation	175	832
Net cash (used in) provided by financing activities	(86,869)	72,927
Effect of exchange rate changes on cash	(7,202)	1,046
Net increase in cash and cash equivalents	19,964	10,830
Cash and cash equivalents at beginning of period	264,908	505,228
Cash and cash equivalents at end of period	$ 284,872	$ 516,058