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Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021
Operating Loss Carryforwards [Line Items]
Less valuation allowance	$ 250	$ 250
Unrecognized tax benefits	10,957	10,259	$ 9,316
Unrecognized tax benefits that would impact effective tax rate	8,656
Increase (decrease) in unrecognized tax benefits	698
Accrued interest and penalties	386	371
Increase in tax expense	1	$ 15
Decrease in unrecognized tax benefits is reasonable possible	2,500
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	94,897
Tax Credit Carryforward, Amount	$ 1,868

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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