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Note 2 - Investments in Affiliates (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	May 01, 2021
Equity Method Investments	$ 19,141		$ 19,887
Income (Loss) from Equity Method Investments, Total	(746)	$ (529)
Related Party Transaction, Amounts of Transaction	470	$ 0
Accounts Payable [Member]
Due to Related Parties, Total	$ 275

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