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Subsequent Event Subsequent Event (Details) - shares
3 Months Ended 12 Months Ended
Apr. 30, 2019
Jan. 31, 2019
Oct. 31, 2017
Jul. 31, 2020
Subsequent Event [Line Items]        
Options Exercised 3,000,000 80,000 18,000,000  
Net Shares to Employees 1,248,799 68,004 7,335,706  
Subsequent Event [Member]        
Subsequent Event [Line Items]        
Options Exercised       4,000,000
Net Shares to Employees       1,902,686