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Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Income Statement [Abstract]    
Revenues $ 2,732 $ 1,759
Cost of revenues 2,496 1,860
Gross profit (loss) 236 (101)
(Gain)/loss from change in fair value of consideration 1,112 (60)
Operating expenses 28,340 21,512
Total operating expenses 29,452 21,452
Operating loss (29,216) (21,553)
Interest income, net 902 124
Other income, employee retention credit 1,251
Other income, proceeds from insurance claim 458
Gain on extinguishment of PPP loan 890
Loss on liquidation of subsidiary (157)
Foreign exchange (loss) / gain 1 (1)
Loss before income taxes (26,604) (20,697)
Income tax benefit 278 1,823
Net loss $ (26,326) $ (18,874)
Earnings per share, basic $ (0.47) $ (0.35)
Earnings per share, diluted $ (0.47) $ (0.35)
Weighted average number of shares outstanding, basic 55,998,543 54,010,233
Weighted average number of shares outstanding, diluted 55,998,543 54,010,233