Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016	Oct. 31, 2016
Goodwill And Other Intangible Assets [Line Items]
Accumulated goodwill impairment loss	$ 0		$ 0		$ 0
Amortization expense	3,100,000	$ 4,300,000	6,900,000	$ 8,500,000
Future amortization expense, 2017	13,200,000		13,200,000
Future amortization expense, 2018	12,200,000		12,200,000
Future amortization expense, 2019	12,100,000		12,100,000
Future amortization expense, 2020	11,500,000		11,500,000
Future amortization expense, 2021	10,000,000		10,000,000
Flexible Products & Services
Goodwill And Other Intangible Assets [Line Items]
Accumulated goodwill impairment loss	$ 50,300,000		$ 50,300,000		$ 50,300,000