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Trade Accounts Receivable (Tables)
12 Months Ended
Jul. 31, 2022
Receivables [Abstract]  
Schedule of trade accounts receivable
   July 31,
2022
   July 31,
2021
 
   (in thousands)   (in thousands) 
Trade Accounts Receivable  $196   $315 
Accounts Receivable - Related Party   158    113 
Less Allowance for Doubtful Accounts   (197)   (193)
Trade Accounts Receivable, net  $157   $235