Note 3 - Revenue Recognition - Segment Revenue Disaggregated by Product Category Groups (Details) - USD ($) $ in Thousands		3 Months Ended
		Jun. 29, 2019	Jun. 30, 2018
Net sales		$ 264,925	$ 244,093
Canned Vegetables [Member]
Net sales		180,700	161,900
B&G Foods, Inc [Member]
Net sales	[1]	7,000	7,300
Frozen [Member]
Net sales		17,700	28,100
Fruit [Member]
Net sales		22,700	21,200
Chip Products [Member]
Net sales		2,900	2,000
Prepared Foods [Member]
Net sales		29,800	17,300
Manufactured Product, Other [Member]
Net sales		$ 4,100	$ 6,300

[1] B&G includes canned and frozen vegetable sales exclusively for B&G.