Leases - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Leases [Abstract]
Operating lease cost	$ 2.2	$ 2.4	$ 4.2	$ 4.7
Operating lease, payments	$ 2.5	$ 2.4	$ 4.8	$ 4.8
Weighted average remaining lease term for operating leases	5 years 7 months 6 days	4 years 3 months 18 days	5 years 7 months 6 days	4 years 3 months 18 days
Weighted average discount rate for operating leases	5.10%	5.00%	5.10%	5.00%