Other Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Jul. 31, 2019	Jul. 31, 2020
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization of Intangible Assets	$ 1,351	$ 1,291
Intangible Assets, Amortization Expense, Next Twelve Months	5,404
Intangible Assets, Amortization Expense, Year Two	5,116
Intangible Assets, Amortization Expense, Year Three	$ 2,191
Other Intangible Assets [Line Items]
Weighted Average Amortization Period	9 years		9 years
Intangible Assets, Gross (Excluding Goodwill)	$ 54,896			$ 55,004
Finite-Lived Intangible Assets, Gross	45,346			45,385
Accumulated Amortization	(33,986)			(32,670)
Finite-Lived Intangible Assets, Net	11,360			12,715
Net Book Value	20,910			22,334
Indefinite-lived Intangible Assets (Excluding Goodwill)	$ 9,550			$ 9,619