CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - USD ($) $ in Thousands		Total	Common Shares	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non-Controlling Interests
Beginning balance at Apr. 29, 2017		$ 601,105	$ 48,472	$ 289,632	$ 284,698	$ (32,883)	$ 11,186
Increase (Decrease) in Stockholders' Equity
Net income		81,595			80,866		729
Other comprehensive income (loss)		8,804				7,684	1,120
Stock issued for stock and employee benefit plans, net of cancellations and withholding tax		2,977	311	4,046	(1,380)
Purchases of common stock		(56,730)	(1,995)	(4,204)	(50,531)
Stock option and restricted stock expense		9,474		9,474
Dividends declared and paid		(22,009)			(22,009)
Change in noncontrolling interests							0
Ending balance at Apr. 28, 2018		625,216	46,788	298,948	291,644	(25,199)	13,035
Increase (Decrease) in Stockholders' Equity
Net income		70,141			68,574		1,567
Other comprehensive income (loss)		23,240				23,374	(134)
Stock issued for stock and employee benefit plans, net of cancellations and withholding tax		13,901	919	15,200	(2,218)
Purchases of common stock		(22,957)	(752)	(11,961)	(10,244)
Stock option and restricted stock expense		10,981		10,981
Cumulative effect adjustment for investments/Reclassification of certain income tax effects						(1,637)
Cumulative effect adjustment for investments/Reclassification of certain income tax effects | ASU 2016-01		0			1,637	(1,637)
Dividends declared and paid		(23,508)			(23,508)
Dividends declared not paid		(38)			(38)
Change in noncontrolling interests							0
Ending balance at Apr. 27, 2019		696,976	46,955	313,168	325,847	(3,462)	14,468
Increase (Decrease) in Stockholders' Equity
Net income		78,984			77,469		1,515
Other comprehensive income (loss)		(3,209)				(2,943)	(266)
Stock issued for stock and employee benefit plans, net of cancellations and withholding tax		3,029	311	4,453	(1,735)
Purchases of common stock		(43,369)	(1,409)	(8,097)	(33,863)
Stock option and restricted stock expense		8,371		8,371
Cumulative effect adjustment for investments/Reclassification of certain income tax effects	[1]	0			547	(547)
Dividends declared and paid		(25,091)			(25,091)
Dividends declared not paid		(115)			(115)
Change in noncontrolling interests		156		320			(164)
Ending balance at Apr. 25, 2020		$ 716,306	$ 45,857	$ 318,215	$ 343,633	$ (6,952)	$ 15,553

[1] Income tax effects of the Tax Cuts and Jobs Act are reclassified from Accumulated Other Comprehensive Income ("AOCI") to retained earnings due to the adoption of ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220).