CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2016	Apr. 25, 2015	Apr. 26, 2014
Cash flows from operating activities
Net income	$ 80,963	$ 71,971	$ 56,380
Adjustments to reconcile net income to cash provided by operating activities
(Gain) loss on disposal of assets	384	(499)	616
Gain on sale of investments	(436)	(214)	(300)
Write-down of long lived assets			1,149
Deferred income tax expense (benefit)	4,581	1,030	(216)
Restructuring	579	(360)	8,071
Provision for doubtful accounts	(660)	(2,290)	(2,651)
Depreciation and amortization	26,517	22,283	23,182
Stock-based compensation expense	8,292	6,780	8,739
Pension plan contributions	(7,000)
Change in receivables	10,730	(2,595)	3,337
Change in inventories	(14,621)	(7,644)	(9,444)
Change in other assets	4,148	4,154	(2,958)
Change in accounts payable	(1,007)	(5,206)	1,704
Change in other liabilities	(109)	(659)	3,223
Net cash provided by operating activities	112,361	86,751	90,832
Cash flows from investing activities
Proceeds from disposals of assets	3,054	9,061	2,233
Proceeds from sale of business			6,844
Capital expenditures	(24,684)	(70,319)	(33,730)
Purchases of investments	(21,009)	(40,327)	(54,233)
Proceeds from sales of investments	28,721	33,750	34,557
Acquisitions, net of cash acquired	(23,311)	(1,774)	(801)
Change in restricted cash	659	2,936	114
Net cash used for investing activities	(36,570)	(66,673)	(45,016)
Cash flows from financing activities
Payments on debt	(508)	(7,571)	(579)
Payments for debt issuance costs		(208)
Stock issued for stock and employee benefit plans	420	1,397	3,565
Excess tax benefit on stock option exercises	1,264	1,592	12,935
Purchases of common stock	(44,082)	(51,853)	(32,097)
Dividends paid	(18,141)	(14,513)	(10,514)
Net cash used for financing activities	(61,047)	(71,156)	(26,690)
Effect of exchange rate changes on cash and equivalents	(688)	(281)	(550)
Change in cash and equivalents	14,056	(51,359)	18,576
Cash and equivalents at beginning of period	98,302	149,661	131,085
Cash and equivalents at end of period	$ 112,358	98,302	149,661
Supplemental disclosure of non-cash investing activities
Capital expenditures included in payables		$ 500	$ 5,303