CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Unearned ESOP Shares	Non-controlling Interests
Beginning Balance at Apr. 27, 2019	$ 1,480,507		$ 953	$ 131,460	$ (88,269)	$ 1,483,496		$ (50,381)	$ 3,248
Beginning Balance (ASU 2016-02) at Apr. 27, 2019		$ 1,447					$ 1,447
Beginning Balance (in shares) at Apr. 27, 2019			95,272,000
Foreign currency translation	(3,799)				(3,799)
Cash flow hedges	554				554
Net income (loss)	29,807					30,042			(235)
Dividends declared	(24,856)					(24,856)
Common stock issued and related tax benefits	(5,369)		$ 2	(5,371)
Common stock issued and related tax benefits (in shares)			198,000
Stock based compensation	6,634			6,634
ESOP activity	18,452							18,452
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect | ASU 2018-02					(2,707)	2,707
Ending Balance at Jul. 27, 2019	1,503,377		$ 955	132,723	(94,221)	1,492,836		(31,929)	3,013
Ending Balance (in shares) at Jul. 27, 2019			95,470,000
Beginning Balance at Apr. 27, 2019	1,480,507		$ 953	131,460	(88,269)	1,483,496		(50,381)	3,248
Beginning Balance (ASU 2016-02) at Apr. 27, 2019		$ 1,447					$ 1,447
Beginning Balance (in shares) at Apr. 27, 2019			95,272,000
Foreign currency translation	2,815
Cash flow hedges	1,108
Net income (loss)	(3,542)
Ending Balance at Oct. 26, 2019	1,458,624		$ 957	139,023	(87,053)	1,434,833		(31,929)	2,793
Ending Balance (in shares) at Oct. 26, 2019			95,715,000
Beginning Balance at Jul. 27, 2019	1,503,377		$ 955	132,723	(94,221)	1,492,836		(31,929)	3,013
Beginning Balance (in shares) at Jul. 27, 2019			95,470,000
Foreign currency translation	6,614				6,614
Cash flow hedges	554				554
Net income (loss)	(33,349)					(33,129)			(220)
Dividends declared	(24,874)					(24,874)
Common stock issued and related tax benefits	733		$ 2	731
Common stock issued and related tax benefits (in shares)			245,000
Stock based compensation	5,569			5,569
Ending Balance at Oct. 26, 2019	1,458,624		$ 957	139,023	(87,053)	1,434,833		(31,929)	2,793
Ending Balance (in shares) at Oct. 26, 2019			95,715,000
Foreign currency translation	2,619				2,619
Cash flow hedges	6,627				6,627
Net income (loss)	22,972					23,227			(255)
Dividends declared	(24,897)					(24,897)
Common stock issued and related tax benefits	464		$ 1	463
Common stock issued and related tax benefits (in shares)			77,000
Stock based compensation	5,559			5,559
Ending Balance at Jan. 25, 2020	1,471,968		$ 958	145,045	(77,807)	1,433,163		(31,929)	2,538
Ending Balance (in shares) at Jan. 25, 2020			95,792,000
Foreign currency translation	(19,496)				(19,496)
Cash flow hedges	264				264
Net income (loss)	(608,797)					(608,586)			(211)
Dividends declared	(24,925)					(24,925)
Common stock issued and related tax benefits	(3,612)		$ 1	(3,613)
Common stock issued and related tax benefits (in shares)			155,000
Stock based compensation	5,174			5,174
ESOP activity	15,868							15,868
Ending Balance at Apr. 25, 2020	$ 836,444		$ 959	146,606	(97,039)	799,652		(16,061)	2,327
Ending Balance (in shares) at Apr. 25, 2020	95,947,000		95,947,000
Foreign currency translation	$ 12,589				12,589
Cash flow hedges	260				260
Net income (loss)	24,202					24,407			(205)
Dividends declared	(24,472)					(24,472)
Common stock issued and related tax benefits	(895)		$ 4	(899)
Common stock issued and related tax benefits (in shares)			309,000
Stock based compensation	6,610			6,610
Ending Balance at Jul. 25, 2020	854,738		$ 963	152,317	(84,190)	799,587		(16,061)	2,122
Ending Balance (in shares) at Jul. 25, 2020			96,256,000
Beginning Balance at Apr. 25, 2020	$ 836,444		$ 959	146,606	(97,039)	799,652		(16,061)	2,327
Beginning Balance (in shares) at Apr. 25, 2020	95,947,000		95,947,000
Foreign currency translation	$ 15,916
Cash flow hedges	521
Net income (loss)	78,028
Ending Balance at Oct. 24, 2020	$ 892,727		$ 965	157,793	(80,602)	828,744		(16,061)	1,888
Ending Balance (in shares) at Oct. 24, 2020	96,495,000		96,496,000
Beginning Balance at Jul. 25, 2020	$ 854,738		$ 963	152,317	(84,190)	799,587		(16,061)	2,122
Beginning Balance (in shares) at Jul. 25, 2020			96,256,000
Foreign currency translation	3,327				3,327
Cash flow hedges	261				261
Net income (loss)	53,826					54,060			(234)
Dividends declared	(24,903)					(24,903)
Common stock issued and related tax benefits	1,211		$ 2	1,209
Common stock issued and related tax benefits (in shares)			240,000
Stock based compensation	4,267			4,267
Ending Balance at Oct. 24, 2020	$ 892,727		$ 965	$ 157,793	$ (80,602)	$ 828,744		$ (16,061)	$ 1,888
Ending Balance (in shares) at Oct. 24, 2020	96,495,000		96,496,000