Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Oct. 29, 2016	Oct. 31, 2015
Operating Activities:
Net income	$ 53,599	$ 32,425
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	6,357	6,055
Deferred income tax benefit	(127)	(15)
Gain on sale of property, net	(6)	(5)
Stock-based compensation	98	128
Changes in assets and liabilities:
Trade receivables	(2,260)	2,671
Inventories	(2,170)	(5,752)
Prepaid and other assets	(854)	583
Accounts payable	(5,905)	(2,438)
Accrued and other liabilities	4,456	3,509
Net cash provided by operating activities	53,188	37,161
Investing Activities:
Additions to property, plant and equipment	(8,468)	(4,413)
Proceeds from sale of property, plant and equipment	15	5
Net cash used in investing activities	(8,453)	(4,408)
Financing Activities:
Dividends paid on preferred stock		(74)
Repayments under credit facilities		(10,000)
Proceeds from stock options exercised	100	442
Stock-based tax benefits	76	211
Net cash provided by (used in) financing activities	176	(9,421)
Net Increase in Cash and Equivalents	44,911	23,332
Cash and Equivalents - Beginning of Period	105,577	52,456
Cash and Equivalents - End of Period	150,488	75,788
Other Cash Flow Information:
Interest paid	152	90
Income taxes paid	$ 25,770	$ 15,154