CONSOLIDATED STATEMENT OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 27, 2013	Apr. 28, 2012	Apr. 30, 2011
Cash flows from operating activities
Net income	$ 47,182	$ 88,908	$ 17,373
Adjustments to reconcile net income to cash provided by operating activities
(Gain) loss on disposal of assets	(659)	45	201
Gain on sale of investments	(3,170)	(519)	(529)
Gain on deconsolidation of VIE	0	(1,125)	0
Write-down of long-lived assets	0	0	4,471
Deferred income tax expense (benefit)	3,198	(42,146)	(120)
Restructuring	2,715	281	487
Provision for doubtful accounts	1,005	4,196	7,197
Depreciation and amortization	23,140	23,486	24,302
Stock-based compensation expense	11,458	5,718	3,720
Pension plan contributions	(23,480)	(5,798)	(4,495)
Change in receivables	7,139	(6,182)	1,599
Change in inventories	391	(7,414)	(10,531)
Change in other assets	(5,407)	3,318	(563)
Change in payables	(6,088)	7,470	(4,429)
Change in other liabilities	11,016	12,610	(10,837)
Net cash provided by operating activities	68,440	82,848	27,846
Cash flows from investing activities
Proceeds from disposals of assets	4,455	372	506
Capital expenditures	(25,912)	(15,663)	(10,540)
Purchases of investments	(49,589)	(7,944)	(10,200)
Proceeds from sales of investments	18,662	8,649	10,655
Cash effects on deconsolidation of VIE	0	(971)	(632)
Acquisitions, net of cash acquired	(15,832)	0	0
Change in restricted cash	(9,825)	(2,861)	0
Other	0	(676)	(49)
Net cash used for investing activities	(78,041)	(19,094)	(10,260)
Cash flows from financing activities
Proceeds from debt	0	0	30,585
Payments on debt	(2,511)	(25,936)	(41,618)
Payments for debt issuance costs	0	(568)	0
Stock issued for stock and employee benefit plans	2,901	4,943	270
Excess tax benefit on stock option exercises	2,563	223	0
Purchases of common stock	(10,333)	(5,179)	0
Dividends paid	(4,236)	0	0
Net cash used for financing activities	(11,616)	(26,517)	(10,763)
Effect of exchange rate changes on cash and equivalents	(68)	(129)	12
Change in cash and equivalents	(21,285)	37,108	6,835
Cash and equivalents at beginning of period	152,370	115,262	108,427
Cash and equivalents at end of period	$ 131,085	$ 152,370	$ 115,262