Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 28, 2012	Jul. 30, 2011
Operating Activities:
Net income	$ 14,392	$ 13,435
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,953	2,725
Deferred income tax benefit	(163)	(134)
Loss (gain) on disposal of property, net	3	(2)
Stock-based compensation	86	106
Changes in assets and liabilities:
Trade receivables	(3,521)	(1,464)
Inventories	(3,206)	(6,383)
Prepaid and other assets	(825)	(618)
Accounts payable	(2,253)	3,052
Accrued and other liabilities	4,873	4,057
Net cash provided by operating activities	12,339	14,774
Investing Activities:
Additions to property, plant and equipment	(1,397)	(1,805)
Proceeds from sale of property, plant and equipment	9	11
Net cash used in investing activities	(1,388)	(1,794)
Financing Activities:
Proceeds from stock options exercised	24	58
Stock-based tax benefits	4	113
Net cash provided by financing activities	28	171
Net Increase in Cash and Equivalents	10,979	13,151
Cash and Equivalents - Beginning of Year	35,626	7,372
Cash and Equivalents - End of Period	46,605	20,523
Other Cash Flow Information:
Interest paid	32	19
Income taxes paid	$ 487	$ 474