Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Oct. 31, 2020	Oct. 26, 2019
Operating Activities:
Net income	$ 98,328	$ 67,196
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	9,233	8,977
Deferred income tax benefit	0	292
Gain on disposal of property, plant and equipment, net	0	(5)
Stock-based compensation	119	126
Amortization of operating right of use assets	6,636	6,552
Changes in assets and liabilities:
Trade receivables	2,060	12,222
Inventories	(5,334)	2,926
Operating lease right of use assets	(4,322)	(1,152)
Prepaid and other assets	94	1,111
Accounts payable	6,175	(5,373)
Accrued and other liabilities	(93)	(5,687)
Operating lease liabilities	(2,019)	(31)
Net cash provided by operating activities	110,877	87,154
Investing Activities:
Additions to property, plant and equipment	(10,369)	(9,642)
Proceeds from sale of property, plant and equipment	15	8
Net cash used in investing activities	(10,354)	(9,634)
Financing Activities:
Proceeds from stock options exercised	403	147
Net cash provided by financing activities	403	147
Net Increase in Cash and Equivalents	100,926	77,667
Cash and Equivalents - Beginning of Period	304,518	156,200
Cash and Equivalents - End of Period	405,444	233,867
Other Cash Flow Information:
Interest paid	90	38
Income taxes paid	$ 38,007	$ 22,675