Note 2 - Revenue Recognition - Segment Revenue Disaggregated by Product Category Groups (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Oct. 01, 2022	Oct. 01, 2022	Oct. 02, 2021	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Net sales	$ 439,842	$ 439,842	$ 372,256	$ 372,256	$ 705,035	$ 607,298
Canned Vegetables [Member]
Net sales		364,749	299,588		583,084	487,532
Frozen [Member]
Net sales		40,095	40,850		59,806	63,434
Fruit [Member]
Net sales		23,971	22,286		42,303	38,159
Snack [Member]
Net sales		3,695	3,685		6,675	7,097
Manufactured Product, Other [Member]
Net sales		$ 7,332	$ 5,847		$ 13,167	$ 11,076