Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jan. 30, 2016	Jan. 31, 2015
Operating Activities:
Net income	$ 43,661	$ 37,129
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	9,071	8,873
Deferred income tax (benefit) provision	(21)	350
Gain on sale of property, net	(36)	(1,255)
Stock-based compensation	182	212
Changes in assets and liabilities:
Trade receivables	398	6,904
Inventories	(1,398)	(2,579)
Prepaid and other assets	(194)	(301)
Accounts payable	(7,231)	(12,128)
Accrued and other liabilities	5,390	(491)
Net cash provided by operating activities	49,822	36,714
Investing Activities:
Additions to property, plant and equipment	(7,817)	(7,161)
Proceeds from sale of property, plant and equipment	43	1,848
Net cash used in investing activities	(7,774)	(5,313)
Financing Activities:
Dividends paid on preferred stock	(112)	(201)
Repayments under credit facilities	$ (10,000)	(15,000)
Redemption of preferred stock		(6,000)
Proceeds from stock options exercised	$ 682	144
Stock-based tax benefits	1,027	171
Net cash used in financing activities	(8,403)	(20,886)
Net Increase in Cash and Equivalents	33,645	10,515
Cash and Equivalents - Beginning of Period	52,456	29,932
Cash and Equivalents - End of Period	86,101	40,447
Other Cash Flow Information:
Interest paid	91	320
Income taxes paid	$ 21,761	$ 18,744