Income Taxes - Income Tax Provision at Federal Statutory Rate (Detail) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Income Tax Expense (Benefit), Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income tax provision at federal statutory rate	$ 12.2	$ 4.1	$ 11.7
Taxes on foreign income which differ from the U.S. statutory rate			(0.1)
State tax expense	2.2	0.1	2.3
CARES Act impact			(4.2)
Manufacturing and research incentives	(3.5)	(1.9)	(0.6)
Nondeductible items	0.3	0.1	0.5
Uncertain tax positions	1.2	0.3
Valuation allowance	0.3	2.2	2.1
Bargain purchase gain			0.1
Stock-based compensation	0.2	(0.4)	(0.1)
Other items		0.1	(0.4)
Provision for income taxes	$ 12.9	$ 4.6	$ 11.3