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Summary of Significant Accounting Policies - Schedule of Property Plant and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 71,983	$ 64,234
Less accumulated depreciation	(48,809)	(46,585)
Net property, plant and equipment	23,174	17,649
Depreciation	3,990	3,125
Land
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	41	41
Building and improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 18,240	17,280
Building and improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful Life (in years)	2 years
Building and improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful Life (in years)	40 years
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 53,702	$ 46,913
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful Life (in years)	2 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful Life (in years)	10 years

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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