Income Taxes - Schedule of Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Jul. 31, 2025	Jul. 31, 2024
Deferred tax assets:
Allowance for credit loss	$ 2,794	$ 2,483
Accrued compensation and benefits	24,868	22,957
Operating lease liabilities	21,213	24,897
Accrued other	3,233	5,528
Deferred revenue	5,989	5,544
Losses carried forward/interest disallowance	52,256	48,599
Federal tax benefit	7,974	12,821
Total gross deferred tax assets	118,327	122,829
Less: Valuation allowance	(50,311)	(47,377)
Net deferred tax assets	68,016	75,452
Deferred tax liabilities:
Vehicle pooling costs	(25,018)	(27,716)
Property and equipment	(58,782)	(74,741)
Operating lease right-of-use assets	(21,655)	(24,612)
Other prepaids	(2,420)	(2,339)
Intangibles and goodwill	(38,586)	(38,279)
Total gross deferred tax liabilities	(146,461)	(167,687)
Net deferred tax liabilities	$ (78,445)	$ (92,235)