Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Apr. 28, 2018	Apr. 29, 2017	Apr. 30, 2016
Operating Activities:
Net income	$ 149,774	$ 107,045	$ 61,198
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	13,226	12,834	12,056
Deferred income tax provision (benefit)	676	1,358	(1,299)
Loss on disposal of property, net	149	72	129
Stock-based compensation	161	208	228
Stock-based tax benefits		495	1,528
Changes in assets and liabilities:
Trade receivables	(13,041)	(10,273)	(1,095)
Inventories	(7,565)	(5,433)	(4,998)
Prepaid and other assets	(5,437)	(2,205)	(485)
Accounts payable	16,753	8,709	4,495
Accrued and other liabilities	25	1,457	8,726
Net cash provided by operating activities	154,721	114,267	80,483
Investing Activities:
Additions to property, plant and equipment	(31,974)	(14,015)	(12,140)
Proceeds from sale of property, plant and equipment	63	28	116
Net cash used in investing activities	(31,911)	(13,987)	(12,024)
Financing Activities:
Dividends paid on common stock	(69,878)	(69,850)
Dividends paid on preferred stock			(186)
Repayments under credit facilities, net			(10,000)
Redemption of preferred stock			(6,000)
Proceeds from stock options exercised	560	365	848
Net cash used in financing activities	(69,318)	(69,485)	(15,338)
Net Increase in Cash and Equivalents	53,492	30,795	53,121
Cash and Equivalents - Beginning of Year	136,372	105,577	52,456
Cash and Equivalents - End of Year	189,864	136,372	105,577
Other Cash Flow Information:
Interest paid	101	202	116
Income taxes paid	$ 56,737	$ 55,901	$ 29,473