Annual report pursuant to Section 13 and 15(d)

Revenue Recognition (Details)

v3.21.2
Revenue Recognition (Details) - USD ($)
 1 Months Ended 12 Months Ended
Jun. 30, 2020
Apr. 30, 2020
Jul. 31, 2021
Jul. 31, 2020
Jul. 31, 2019
Revenue Recognition (Details) [Line Items]          
Income grants (in Dollars) $ 1,496 $ 1,496      
Clinical Services Revenue [Member]          
Revenue Recognition (Details) [Line Items]          
Percentage of clinical services business     74.00% 63.00% 63.00%