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
9 Months Ended 12 Months Ended
Jan. 31, 2023
Jan. 31, 2022
Apr. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Shares, Outstanding, Beginning Balance 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   707,293 707,293
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 542,151 to pay taxes and 9,000 to repay a Note 534,318   225,637
Vesting of restricted stock units to Board of Directors 95,366   48,124
Vesting of restricted stock units to consultants 7,042   7,042
Shares issued for services   111,667 111,667
Shares, Outstanding, Ending Balance 54,385,461 53,637,971 53,748,735