Annual report pursuant to Section 13 and 15(d)

Fair Value Hierarchy (Details)

v3.22.2
Fair Value Hierarchy (Details)
Apr. 30, 2022
USD ($)
Available For Sale Securities Level 1 [Member]  
Money market funds $ 799,936
Asset-backed securities
Corporate bonds
Total 799,936
Available For Sale Securities Level 2 [Member]  
Money market funds
Asset-backed securities 2,861,559
Corporate bonds 41,128,874
Total 43,990,433
Available For Sale Securities Level 3 [Member]  
Money market funds
Asset-backed securities
Corporate bonds
Total
Available For Sale Securities Total [Member]  
Money market funds 799,936
Asset-backed securities 2,861,559
Corporate bonds 41,128,874
Total $ 44,790,369