Quarterly report pursuant to Section 13 or 15(d)

Summary of shares of common stock issued (Details)

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Summary of shares of common stock issued (Details) - Common Stock [Member] - USD ($)
 3 Months Ended 9 Months Ended 12 Months Ended
Jan. 31, 2024
Oct. 31, 2023
Jan. 31, 2024
Jan. 31, 2023
Apr. 30, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Shares, Outstanding, Beginning Balance 55,649,896 55,541,875 54,568,065 53,748,735 53,748,735
Vesting of restricted stock to employees, net of shares withheld of 27,189 to pay taxes     145,623   653,308
Vesting of restricted stock to Board of Directors     181,088   116,507
Vesting of restricted stock to consultants     1,761   9,683
Shares issued for services         39,832
Shares, Outstanding, Ending Balance 74,171,106 55,649,896 74,171,106 54,385,461 54,568,065
Conversion of preferred stock     $ 818,334    
Issuance of common stock through ATM facilities   53,235 53,235    
Issuance of common stock through public offering 18,400,000   18,400,000    
Exercise of stock options 3,000   3,000