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Investments in Affiliates (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 29, 2022	Oct. 30, 2021	Oct. 29, 2022	Oct. 30, 2021	Apr. 30, 2022
Schedule of Investments [Line Items]
Equity method investments	$ 18,040		$ 18,040		$ 16,916
Equity in loss of affiliate	811	$ 819	1,701	$ 1,565
Accounts payable	52		52
Debt conversion, converted instrument, amount			2,824
Long-term Receivables, Less Current Maturities
Schedule of Investments [Line Items]
Purchase of convertible notes	2,882		$ 2,882
Product Design and Development
Schedule of Investments [Line Items]
Related party transaction, amounts of transaction	$ 672	$ 898

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