Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Operating Loss Carryforwards [Line Items]
Less valuation allowance	$ 550	$ 250
Unrecognized tax benefits	10,747	10,957	$ 10,259
Unrecognized tax benefits that would impact effective tax rate	8,490
Increase (decrease) in unrecognized tax benefits	(210)
Accrued interest and penalties	350	386
Increase (decrease) in tax expense	(36)	$ 15
Decrease in unrecognized tax benefits is reasonable possible	2,000
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	126,681
Tax credit carryforward	$ 2,319

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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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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