Note 12 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 28, 2024	Dec. 30, 2023	Dec. 28, 2024	Dec. 30, 2023	Mar. 31, 2024
Net sales	$ 502,856	$ 444,481	$ 1,233,048	$ 1,150,620
Earnings before income taxes	19,348	23,199	52,917	86,037
Total assets	1,225,915	1,489,537	1,225,915	1,489,537	$ 1,383,997
Continuing Operations [Member]
Net sales	502,856	444,481	1,233,048	1,150,620
Earnings before income taxes	19,348	23,199	52,917	86,037
Total assets	1,225,915	1,489,537	1,225,915	1,489,537
Continuing Operations [Member] | Vegetable Segment [Member]
Net sales	453,170	400,144	1,122,607	1,044,265
Earnings before income taxes	23,876	33,304	62,032	92,461
Total assets	1,467,960	1,705,008	1,467,960	1,705,008
Continuing Operations [Member] | Fruit and Snack Segment [Member]
Net sales	40,177	35,485	88,236	82,378
Earnings before income taxes	3,872	2,217	9,395	4,416
Total assets	103,117	103,542	103,117	103,542
Continuing Operations [Member] | Corporate Segment and Other Operating Segment [Member]
Net sales	9,509	8,852	22,205	23,977
Earnings before income taxes	2,519	(295)	4,468	8,803
Total assets	2,598	3,070	2,598	3,070
Continuing Operations [Member] | Subtotal FIFO Basis [Member]
Net sales	502,856	444,481	1,233,048	1,150,620
Earnings before income taxes	30,267	35,226	75,895	105,680
Total assets	1,573,675	1,811,620	1,573,675	1,811,620
Continuing Operations [Member] | LIFO Impact [Member]
Net sales	0	0	0	0
Earnings before income taxes	(10,919)	(12,027)	(22,978)	(19,643)
Total assets	$ (347,760)	$ (322,083)	$ (347,760)	$ (322,083)