CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - USD ($) $ in Thousands	Common Shares	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non-Controlling Interests	Total
Balance at Apr. 26, 2014	$ 51,981	$ 262,901	$ 238,384	$ (31,380)	$ 7,832	$ 529,718
Increase (Decrease) in Stockholders' Equity
Net income			70,773		1,198	71,971
Other comprehensive income (loss)				(759)	(76)	(835)
Stock issued for stock and employee benefit plans, net of cancellations and withholding tax	898	26	(10,684)			(9,760)
Purchases of common stock	(2,132)	(1,267)	(48,454)			(51,853)
Stock option and restricted stock expense		6,780				6,780
Tax benefit from exercise of options		1,592				1,592
Dividends paid			(14,513)			(14,513)
Balance at Apr. 25, 2015	50,747	270,032	235,506	(32,139)	8,954	533,100
Increase (Decrease) in Stockholders' Equity
Net income			79,252		1,711	80,963
Other comprehensive income (loss)				(1,861)	(595)	(2,456)
Stock issued for stock and employee benefit plans, net of cancellations and withholding tax	243	97	(2,068)			(1,728)
Purchases of common stock	(1,659)	(346)	(42,077)			(44,082)
Stock option and restricted stock expense		8,292				8,292
Tax benefit from exercise of options		1,264				1,264
Dividends paid			(18,141)			(18,141)
Balance at Apr. 30, 2016	49,331	279,339	252,472	(34,000)	10,070	557,212
Increase (Decrease) in Stockholders' Equity
Net income			85,922		1,062	86,984
Other comprehensive income (loss)				1,117	54	1,171
Stock issued for stock and employee benefit plans, net of cancellations and withholding tax	504	2,992	(1,747)			1,749
Purchases of common stock	(1,363)	(3,300)	(31,294)			(35,957)
Stock option and restricted stock expense		8,864				8,864
Tax benefit from exercise of options		1,737				1,737
Dividends paid			(20,655)			(20,655)
Balance at Apr. 29, 2017	$ 48,472	$ 289,632	$ 284,698	$ (32,883)	$ 11,186	$ 601,105