Valuation and Qualifying Accounts Schedule II (Detail) - Allowance for Doubtful Accounts - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 3,260	$ 3,260	$ 2,650
Charged (Credited) to Costs and Expenses	(2,000)	0	610
Deductions Describe	0	0	0
Balance at End of Period	$ 1,260	$ 3,260	$ 3,260