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Business Segment Information (Details) - Schedule of operating results for the business segments - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jan. 31, 2022
Jan. 31, 2021
Jan. 31, 2022
Jan. 31, 2021
Segment Reporting Information [Line Items]        
Revenues $ 1,110 $ 959 $ 2,136 $ 2,012
Loss from operations (1,710) (10,817) (51,206) (13,308)
Loss before income taxes (2,561) (8,329) (131,397) (9,851)
Pharmaceuticals [Member]        
Segment Reporting Information [Line Items]        
Revenues
Loss from operations (1,621) (10,301) (50,966) (12,435)
Loss before income taxes (2,472) (7,813) (131,157) (9,727)
Real Estate [Member]        
Segment Reporting Information [Line Items]        
Revenues 1,110 959 2,136 2,012
Loss from operations (89) (516) (240) (873)
Loss before income taxes $ (89) $ (516) $ (240) $ (124)