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Intangible Assets (Tables)
9 Months Ended
Jan. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Components of Intangible Assets

The components of intangible assets, net as of January 31, 2023 and April 30, 2022 consisted of the following:

 

   January 31,
2023
   April 30,
2022
 
   (in thousands) 
Patents  $2,729   $2,729 
Trademarks   2,769    2,769 
Tradename   130    130 
Customer Relationships   150    150 
Intangible assets, gross  $5,778   $5,778 
Accumulated amortization   (1,761)   (1,642)
Intangible assets, net  $4,017   $4,136