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Revenue (Details) - Schedule of revenue by type of service - USD ($)
$ in Thousands
 12 Months Ended
Jul. 31, 2021
Jul. 31, 2020
Revenue (Details) - Schedule of revenue by type of service [Line Items]    
Total Revenues $ 19,569 $ 9,470
Advertising revenue [Member]    
Revenue (Details) - Schedule of revenue by type of service [Line Items]    
Total Revenues 15,741 7,410
Paid subscription revenue [Member]    
Revenue (Details) - Schedule of revenue by type of service [Line Items]    
Total Revenues 3,311 1,599
Other revenues [Member]    
Revenue (Details) - Schedule of revenue by type of service [Line Items]    
Total Revenues $ 517 $ 461