Restructuring and Other Income, Net - Schedule of Progression of Liabilities Associated with Restructuring Activities, Combined with Reconciliation to Restructuring and Other Income, Net (Parenthetical) (Detail) - USD ($)			3 Months Ended
	Oct. 31, 2022	Jun. 14, 2022	Nov. 30, 2022
Tulsa, Oklahoma
Restructuring Cost and Reserve [Line Items]
Net cash proceeds		$ 5,775,000
Pre-tax gain on sale of joint venture facility		$ 1,177,000
WSP Joint Venture
Restructuring Cost and Reserve [Line Items]
Net cash proceeds	$ 21,277,000
Amount held in escrow	2,000,000
Pre-tax gain on sale of joint venture facility	$ 3,926,000
Cleveland [Member]
Restructuring Cost and Reserve [Line Items]
Net cash proceeds			$ 3,298,000