Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jan. 27, 2018	Jan. 28, 2017
Operating Activities:
Net income	$ 113,332	$ 77,884
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	10,273	9,600
Deferred income tax benefit	(5,806)	(189)
Gain on sale of property, net	(9)	(5)
Stock-based compensation	119	146
Stock-based tax benefits		153
Changes in assets and liabilities:
Trade receivables	(4,623)	(7,664)
Inventories	(7,477)	(518)
Prepaid and other assets	(1,840)	(1,703)
Accounts payable	399	282
Accrued and other liabilities	2,390	3,586
Net cash provided by operating activities	106,758	81,572
Investing Activities:
Additions to property, plant and equipment	(18,686)	(11,834)
Proceeds from sale of property, plant and equipment	58	15
Net cash used in investing activities	(18,628)	(11,819)
Financing Activities:
Dividends paid on common stock	(69,878)	(69,850)
Proceeds from stock options exercised	399	186
Net cash used in financing activities	(69,479)	(69,664)
Net Increase in Cash and Equivalents	18,651	89
Cash and Equivalents - Beginning of Period	136,372	105,577
Cash and Equivalents - End of Period	155,023	105,666
Other Cash Flow Information:
Interest paid	76	165
Income taxes paid	$ 48,848	$ 40,389