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Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020	Apr. 30, 2021
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 195	$ (197)	$ 446	$ (176)
Effective income tax rate	(6.80%)	54.40%	(11.30%)	18.50%
Deferred tax liability, global tax exposure for unremitted earnings of international subsidiaries	$ 860		$ 860		$ 776

X

- Definition

Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiary and other recognized entity not within country of domicile. Includes, but is not limited to, other basis differences.

+ References

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- Definition

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

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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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