Condensed Consolidated Statement Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 27, 2013	Apr. 28, 2012	Apr. 30, 2011
OPERATING ACTIVITIES
Net income	$ 40,444	$ 8,137	$ 19,193
Adjustments to reconcile net income to net cash provided by/(used in) operating activities:
Loss on sale of fixed assets	0	118	73
Gain on the sale of discontinued business	0	0	(4,148)
Impairment of goodwill	4,326	0	0
Gain on investment in business	0	0	(165)
Gain on bargain purchase	0	(255)	0
Provision for depreciation	17,012	14,348	13,354
Amortization of intangible assets	1,794	1,811	2,402
Impairment of tangible assets	0	0	1,299
Stock-based compensation	3,252	3,976	3,006
Provision for bad debt	106	495	249
Deferred income taxes	(7,206)	(1,939)	(5,207)
Changes in operating assets and liabilities:
Accounts receivable	(21,198)	(13,525)	(17,846)
Inventories	(16,138)	(3,278)	(8,710)
Prepaid expenses and other current assets	9,175	(10,255)	13,841
Accounts payable and accrued expenses	1,678	25,192	(301)
NET CASH PROVIDED BY OPERATING ACTIVITIES	33,245	24,825	17,040
INVESTING ACTIVITIES
Purchases of property, plant and equipment	(38,555)	(25,744)	(15,223)
Acquisition of businesses	(1,434)	(6,353)	(2,470)
Proceeds from life insurance policies	0	0	1,515
NET CASH USED IN INVESTING ACTIVITIES	(39,989)	(32,097)	(16,178)
FINANCING ACTIVITIES
Proceeds from exercise of stock options	608	263	1,028
Cash dividends	(10,378)	(10,364)	(10,329)
Proceeds from borrowings	37,000	52,000	0
Repayment of borrowings	(41,500)	(4,000)	0
NET CASH PROVIDED BY/(USED IN) FINANCING ACTIVITIES	(14,270)	37,899	(9,301)
Effect of foreign currency exchange rate changes on cash	28	(1,275)	2,063
INCREASE/(DECREASE) IN CASH AND CASH EQUIVALENTS	(20,986)	29,352	(6,376)
Cash and cash equivalents at beginning of year	86,797	57,445	63,821
CASH AND CASH EQUIVALENTS AT END OF YEAR	$ 65,811	$ 86,797	$ 57,445