Quarterly report pursuant to Section 13 or 15(d)

Contractual Maturities (Details)

v3.22.0.1
Contractual Maturities (Details)
Jan. 31, 2022
USD ($)
Contractual Maturities Period 1 [Member]  
Money market funds $ 1,599,536
Asset-backed securities
Corporate bonds 19,808,158
Total 21,407,694
Contractual Maturities Period 2 [Member]  
Money market funds
Asset-backed securities 3,091,839
Corporate bonds 23,366,723
Total 26,458,562
Contractual Maturities Period 3 [Member]  
Money market funds
Asset-backed securities
Corporate bonds 580,046
Total 580,046
Contractual Maturities Total [Member]  
Money market funds 1,599,536
Asset-backed securities 3,091,839
Corporate bonds 43,754,927
Total $ 48,446,302