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Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Jul. 31, 2023
Jul. 31, 2022
Income Statement [Abstract]    
Revenues $ 1,272 $ 714
Cost of revenues 609 520
Gross margin 663 194
Gain from change in fair value of consideration (62) (131)
Operating expenses 8,103 6,318
Operating loss (7,378) (5,993)
Interest income, net 339 141
Loss before income taxes (7,039) (5,852)
Provision for income taxes
Net loss $ (7,039) $ (5,852)
Basic net loss per share $ (0.12) $ (0.10)
Diluted net loss per share $ (0.12) $ (0.10)
Weighted average shares used to compute basic net loss per common share 58,723,076 55,889,651
Weighted average shares used to compute diluted net loss per common share 58,723,076 55,889,651