Goodwill and Intangible Assets - Identifiable Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Oct. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ 128,774		$ 124,784
Finite-Lived Intangible Assets, Gross	233,112		232,081
Intangible assets amortization expense	3,700	$ 4,000
Estimated Amortization Expense
2020 (remaining nine months)	10,594
2016	12,619
2017	11,998
2018	11,251
2019	10,520
Thereafter	47,356
Total	104,338		107,297
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	73,029		70,103
Finite-Lived Intangible Assets, Gross	154,727		153,950
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	35,811		35,210
Finite-Lived Intangible Assets, Gross	55,988		55,745
Patents And Other Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	19,934		19,471
Finite-Lived Intangible Assets, Gross	$ 22,397		$ 22,386