Quarterly report pursuant to Section 13 or 15(d)

Contingencies (Details)

v3.21.1
Contingencies (Details) - USD ($)
$ in Millions
1 Months Ended 9 Months Ended 12 Months Ended
Apr. 30, 2020
Apr. 30, 2021
Jul. 31, 2020
Loss Contingency [Abstract]      
Contingencies approval, percent   80.00%  
Legal and related expenses     $ 0.8
Litigation settlement, amount awarded from other party $ 0.8