Quarterly report pursuant to Section 13 or 15(d)

Fair Value Hierarchy (Details)

v3.22.0.1
Fair Value Hierarchy (Details)
Jan. 31, 2022
USD ($)
Available For Sale Securities Level 1 [Member]  
Money market funds $ 1,599,536
Asset-backed securities
Corporate bonds
Total 1,599,536
Available For Sale Securities Level 2 [Member]  
Money market funds
Asset-backed securities 3,091,839
Corporate bonds 43,754,927
Total 46,846,766
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 1,599,536
Asset-backed securities 3,091,839
Corporate bonds 43,754,927
Total $ 48,446,302