XML 51 R42.htm IDEA: XBRL DOCUMENT v3.22.0.1
Operating Leases (Schedule of Additional Information Related to Leases) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jan. 31, 2022
Jan. 31, 2021
Jan. 31, 2022
Jan. 31, 2021
Other information:        
Operating cash flows from operating leases $ 528,073 $ 497,281 $ 1,055,287 $ 989,613