Income Taxes - Summary of Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Apr. 30, 2025	Apr. 30, 2024
Deferred tax assets
Loss carryforwards	$ 52,281	$ 34,572
Interest carryforward	7,211	5,786
Accrued liabilities	4,553	2,261
Operating lease liability	539	354
Disposable medical equipment supplies	224	161
U.S. research and development credits	5,517	5,116
Intangible asset	35,375	35,375
Share-based compensation	4,998
Total deferred tax assets	110,698	83,625
Less: valuation allowance for deferred tax assets	(103,815)	(79,028)
Net deferred tax assets	6,883	4,597
Deferred tax liabilities
Property and equipment	(6,233)	(4,161)
Prepaid expenses	(533)	(228)
Right-of-use assets	(257)	(284)
Total deferred tax liabilities	(7,023)	(4,673)
Net deferred tax liabilities	$ (140)	$ (76)

Deferred tax asset operating lease liability.

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Deferred tax assets disposable medical equipment supplies.

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Deferred tax liabilities right of use assets.

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible interest carryforward.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from in-process research and development cost acquired in business combination or from joint venture formation or both.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities.

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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, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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