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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Income Tax Disclosure [Abstract]
Income tax (benefit) provision	$ 8,775	$ 15,420	$ 38,988	$ 14,143
Income tax (benefit) provision tax rate	29.50%		26.60%
U.S. corporate federal statutory income tax rate			21.00%

X

- Definition

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

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

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

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