Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jan. 31, 2015	Jan. 25, 2014
Operating Activities:
Net income	$ 37,129	$ 31,703
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	8,873	8,909
Deferred income tax provision (benefit)	350	(149)
(Gain) loss on disposal of property, net	(1,255)	10
Stock-based compensation	212	56
Changes in assets and liabilities:
Trade receivables	6,904	12,812
Inventories	(2,579)	(3,229)
Prepaid and other assets	(301)	(1,814)
Accounts payable	(12,128)	(11,162)
Accrued and other liabilities	(491)	(4,829)
Net cash provided by operating activities	36,714	32,307
Investing Activities:
Additions to property, plant and equipment	(7,161)	(8,009)
Proceeds from sale of property, plant and equipment	1,848	34
Net cash used in investing activities	(5,313)	(7,975)
Financing Activities:
Dividends paid on preferred stock	(201)	(449)
Repayments under credit facilities	(15,000)	(15,000)
Redemption of preferred stock	(6,000)
Other, net	315	(35)
Net cash used in financing activities	(20,886)	(15,484)
Net Increase in Cash and Equivalents	10,515	8,848
Cash and Equivalents - Beginning of Year	29,932	18,267
Cash and Equivalents - End of Period	40,447	27,115
Other Cash Flow Information:
Interest paid	320	589
Income taxes paid	$ 18,744	$ 17,835