Basis of Presentation - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Jul. 31, 2020	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Primary Equity Holder [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Selling, general and administrative expenses charged by primary equity holder		$ 0.1		$ 0.2	$ 0.6
Primary Equity Holder [Member] | Maximum [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Selling, general and administrative expenses charged by primary equity holder			$ 0.1
Management [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Rent expense		$ 0.1	$ 0.5	$ 0.7	$ 1.5
American Industrial Partners [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Equity interest held by operating partnership, voting equity	53.20%