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Note 13 - Segment Information - Classes of Similar Products or Services (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 30, 2017 | Sep. 30, 2017 | Jul. 01, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Oct. 01, 2016 | Jul. 02, 2016 | Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Net sales |  | $ 387,689 | $ 338,470 | $ 288,927 | $ 280,690 | $ 356,767 | $ 352,606 | $ 272,135 | $ 1,314,765 | $ 1,262,198 | $ 1,279,567
Green Giant [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales | [1] |  |  |  |  |  |  |  | 111,014 | 136,329 | 148,517
Canned Vegetables [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 721,121 | 705,297 | 746,501
Frozen [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 105,857 | 98,597 | 94,710
Fruit [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 256,687 | 286,464 | 253,658
Prepared Foods [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 92,826 |  |
Snack [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 10,110 | 12,430 | 12,336
Other [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 17,150 | $ 23,081 | $ 23,845
[1] | Green Giant includes canned and frozen vegetables exclusively for B&G Foods.

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 + Details
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