Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation (Details)

v3.20.4
Basis of Presentation (Details)
3 Months Ended 6 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2021
Jan. 31, 2020
Clinical Services [Member] | Third-party payers” and “Health Maintenance Organizations [Member] | Revenue Benchmark [Member]        
Basis of Presentation (Details) [Line Items]        
Concentration risk, percentage 35.00% 33.00% 34.00% 33.00%