Income Taxes - Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ 2,909	$ 2,891	$ 3,781
Additions based on tax positions related to the current year	370	370	310
Additions for tax positions of prior years	4,068	547	40
Reductions for tax positions of prior years	0	0	(120)
Settlements	137	0	0
Lapse of statute of limitations	(493)	(899)	(1,120)
Balance at end of year	$ 6,717	$ 2,909	$ 2,891