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3. Note Payable (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jul. 31, 2020
Jul. 31, 2019
Apr. 23, 2020
Apr. 17, 2020
Repayment of PPP loan $ 4,379 $ 0    
Promissory note [Member]        
Proceeds from PPP loan       $ 4,379
Repayment of PPP loan     $ 4,379  
Note payable balance $ 0