XML 57 R48.htm IDEA: XBRL DOCUMENT v3.23.2
Investments (Details) - USD ($)
$ in Thousands
Jul. 29, 2023
Apr. 30, 2023
Long-term investments:    
Equity Method Investments. $ 18,623 $ 18,644
Total long-term investments 22,578 23,613
Investment in limited partnership fund    
Long-term investments:    
Equity Method Investments. 18,623 18,644
Available-for-sale securities.    
Long-term investments:    
Total long-term investments 3,955 4,969
Available-for-sale securities. | Equity securities and warrants    
Long-term investments:    
Total long-term investments $ 3,955 $ 4,969