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Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Details) - USD ($)
$ in Thousands
 12 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]    
Net loss $ (26,326) $ (18,874)
Right of use assets 1,751 752
Total assets 53,374 73,393
Operating Segment [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues from external customers 2,732 1,759
Net loss (26,326) (18,874)
Right of use assets 1,751  
Long-lived assets 1,280 445
Total assets 53,374 73,393
North America [Member] | Operating Segment [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues from external customers 2,479 1,633
Net loss (26,375) (18,732)
Right of use assets 1,751  
Long-lived assets 1,280 445
Total assets 53,374 73,359
Europe [Member] | Operating Segment [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues from external customers 19
Net loss (11)
Right of use assets  
Long-lived assets
Total assets 19
Asia and Australia [Member] | Operating Segment [Member]    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Revenues from external customers 253 107
Net loss 49 (131)
Right of use assets  
Long-lived assets
Total assets $ 15