CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (USD $) In Thousands, unless otherwise specified	Common Shares [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Non-Controlling Interests [Member]	Total
Balance at Apr. 24, 2010	$ 51,770	$ 218,622	$ 89,717	$ (20,284)	$ 3,289	$ 343,114
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)			24,047		(6,674)	17,373
Other comprehensive income (loss)				1,480	353	1,833
Stock issued for stock and employee benefit plans, net of cancellations	139		(244)			(105)
Stock option and restricted stock expense		3,717				3,717
Acquisition of VIE and other			(8,573)		8,633	60
Cumulative effect of change in accounting for noncontrolling interests			925		(2,777)	(1,852)
Balance at Apr. 30, 2011	51,909	222,339	105,872	(18,804)	2,824	364,140
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)			87,966		942	88,908
Other comprehensive income (loss)				(12,477)	(167)	(12,644)
Stock issued for stock and employee benefit plans, net of cancellations	835	4,011	(509)			4,337
Purchases of common stock	(500)	(958)	(3,721)			(5,179)
Stock option and restricted stock expense		5,717	1			5,718
Tax benefit from exercise of options		223				223
Change in noncontrolling interest upon deconsolidation of VIE and other changes in noncontrolling interests					2,312	2,312
Balance at Apr. 28, 2012	52,244	231,332	189,609	(31,281)	5,911	447,815
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)			46,389		793	47,182
Other comprehensive income (loss)				(4,215)	339	(3,876)
Stock issued for stock and employee benefit plans, net of cancellations	817	1,849	(1,368)			1,298
Purchases of common stock	(669)	(5,314)	(4,350)			(10,333)
Stock option and restricted stock expense		11,458				11,458
Tax benefit from exercise of options		2,563				2,563
Dividends Paid			(4,236)			(4,236)
Change in noncontrolling interests					97	97
Balance at Apr. 27, 2013	$ 52,392	$ 241,888	$ 226,044	$ (35,496)	$ 7,140	$ 491,968