Segment Information - Net Income Reconciliation (Detail) - USD ($) $ in Thousands	3 Months Ended
Oct. 31, 2022	Oct. 31, 2021
Segment Reconciliation [Abstract]
Total profit from reportable segments	$ 57,903	$ 51,109
Unallocated amounts:
Administrative costs	(6,517)	(6,774)
Investment and other (expense) income	(157)	543
Interest expense	(894)	(182)
Income before income taxes	$ 50,335	$ 44,696

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details