Income Taxes (Details 3) - USD ($) $ in Thousands	Jul. 31, 2019	Jul. 31, 2018
Deferred tax assets:
Allowance for doubtful accounts	$ 919	$ 1,068
Accrued compensation and benefits	18,397	17,704
State taxes	559	580
Accrued other	3,312	1,930
Deferred revenue	(1,322)	(929)
Losses carried forward	7,631	3,065
Federal tax benefit	7,998	6,441
Total gross deferred tax assets	40,138	31,717
Less: Valuation allowance	(8,578)	(4,592)
Net deferred tax assets	31,560	27,125
Deferred tax liabilities:
Vehicle pooling costs	(15,731)	(6,523)
Deferred Tax Liabilities, Property, Plant and Equipment	(38,475)	(14,147)
Prepaid insurance	(987)	(708)
Intangibles and goodwill	(24,639)	(25,010)
Deferred Tax Liabilities, Gross	(79,832)	(46,388)
Total gross deferred tax liabilities	(48,272)	(19,263)
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 22,000	$ 16,000

The tax effect as of the balance sheet date of the amount of the estimated future tax deductions attributable to Federal tax benefit recognized only for tax purposes and which will reverse when recognized under generally accepted accounting principles.

No definition available.