Quarterly report pursuant to Section 13 or 15(d)

Note 3 ??? Marketable Securities (Tables)

v3.22.2.2
Note 3 – Marketable Securities (Tables)
 6 Months Ended
Oct. 31, 2022
Investments, Debt and Equity Securities [Abstract]  
[custom:ScheduleOfAmortizedCostNetUnrealizedGainLossFairValues]
    Cost   Unrealized Gains (Losses)   Fair Value
Asset-backed securities   $ 1,663,414     $ (27,702 )   $ 1,635,712  
Corporate bonds     31,330,997       (1,663,821 )     29,667,176  
Total   $ 32,994,411     $ (1,691,523 )   $ 31,302,888  
[custom:ScheduleOfContractualMaturitiesFairValueMeasurements]
    One Year or Less   One to
Five Years		   Over Five Years   Total
Asset-backed securities   $ —       $ 1,635,712     $ —       $ 1,635,712  
Corporate bonds     14,785,077       14,577,260       304,839       29,667,176  
Total   $ 14,785,077     $ 16,212,972     $ 304,839     $ 31,302,888  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
    Level 1   Level 2   Level 3   Total
Asset-backed securities   $ —       $ 1,635,712     $ —       $ 1,635,712  
Corporate bonds     —         29,667,176       —         29,667,176  
Total   $ —       $ 31,302,888     $ —       $ 31,302,888