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Note 11 - Pension Plans - Contributions for All Multi-employer Pension Plans (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2022 | May 01, 2021 | May 02, 2020
Fund | $ (2,460) | $ (2,381) | $ (2,408)
Fund | 2,460 | 2,381 | 2,408
CSSS Fund [Member] |  |  |
Fund | (1,462) | (1,469) | (1,424)
Fund | 1,462 | 1,469 | 1,424
WCT Fund [Member] |  |  |
Fund | (817) | (746) | (799)
Fund | 817 | 746 | 799
Other Multi-employer Pension Funds [Member] |  |  |
Fund | (181) | (166) | (185)
Fund | $ 181 | $ 166 | $ 185

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- Definition Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 35 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=29639808&loc=d3e29008-114946 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 + Details
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Balance Type: | debit
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- Details
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- Details
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- Details
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Balance Type: |
Period Type: |