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] - shares
3 Months Ended 6 Months Ended 12 Months Ended
Oct. 31, 2021
Jul. 31, 2021
Oct. 31, 2022
Oct. 31, 2021
Apr. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]          
Shares, Outstanding, Beginning Balance 48,489,085 29,431,264 53,748,735 29,431,264 29,431,264
Conversion of Series A preferred stock         1,321,996
Conversion of Series B preferred stock         818,333
Exercise of warrants   66,666     66,666
Acquisition of Skypersonic on May 7, 2021, see Note 1 21,972 685,321     707,293
Acquisition of Teal Drones on August 31, 2021, see Note 1 3,588,272       3,588,272
Public offerings which generated gross proceeds of $76 million and net proceeds of approximately $70.1 million   17,333,334     17,333,334
Exercise of stock options         89,107
Vesting of restricted stock units to employees, net of shares withheld of 512,643 to pay taxes and 9,000 to repay a Note     446,325   225,637
Vesting of restricted stock units to Board of Directors     30,078   48,124
Vesting of restricted stock units to consultants     4,401   7,042
Shares issued for services 20,000 91,667     111,667
Shares, Outstanding, Ending Balance 53,684,910 48,489,085 54,229,539 53,684,910 53,748,735