Note 2 - Revenue Recognition - Segment Revenue Disaggregated by Product Category Groups (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Net sales	$ 460,022	$ 425,465	$ 757,480	$ 730,192	[1]
Canned Vegetables [Member]
Net sales	377,328	351,268	624,679	605,017
Frozen [Member]
Net sales	44,871	39,086	67,808	64,420
Fruit [Member]
Net sales	22,786	22,315	40,836	41,156
Snack [Member]
Net sales	4,965	4,038	8,520	6,903
Manufactured Product, Other [Member]
Net sales	$ 10,072	$ 8,758	$ 15,637	$ 12,696

[1] Information received by the CODM as part of net sales includes trade promotion costs representing amounts paid to retailers for shelf space, to obtain favorable display positions, and to offer temporary price reductions for the sale of the Company's products to consumers.