v3.26.1
FAIR VALUE MEASUREMENTS (Details - Fair values of financial instruments) - USD ($)
Apr. 30, 2026
Apr. 30, 2025
Marketable Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Fair value of financial assets $ 254,010 $ 366,316
Money Market Account [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Fair value of financial assets 2,100,703 76,287
Convertible Note Receivable [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Fair value of financial assets 0 3,696,000
Warrant asset - Femasys [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Fair value of financial assets 480,000 3,061,000
Investment in preferred stock - QCLS [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Fair value of financial assets 18,225,000 22,474,000
Warrant asset - QCLS [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Fair value of financial assets $ 8,845,000 $ 8,618,000