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Goodwill (Tables)
12 Months Ended
Jul. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of reconciles the change in the carrying amount of goodwill
(in thousands)    
     
Balance at July 31, 2019  $2,266 
Foreign currency translation adjustments   (70)
Balance at July 31, 2020   2,196 
Foreign currency translation adjustments   66 
Balance at July 31, 2021  $2,262