Additional tax benefit related to share based payment transactions.

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- Definition

Income tax.

+ References

No definition available.

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- Definition

Tax Cuts and Jobs Act of 2017 measurement period.

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No definition available.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB
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-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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-Topic 740
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- Definition

Amount of income tax expense (benefit) for remeasurement of deferred tax from change in tax rate pursuant to Tax Cuts and Jobs Act.

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-Publisher FASB
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-Topic 740
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- Definition

Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	2 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2017	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018	Oct. 31, 2018
Income Tax [Line Items]
Effective tax rates		21.40%	22.70%	22.80%	15.60%
U.S. federal corporate income tax rate	35.00%			21.00%		23.30%
Provisional discrete tax (benefit) expense				$ 4,866	$ (22,089)
Discrete tax benefit		$ 210	$ 544	$ 3,227	$ 7,494
Favorable adjustment to unrecognized tax benefits		$ 858	$ 1,041
Maximum [Member]
Income Tax [Line Items]
Measurement period				1 year