Restructuring Charges (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring charges, net	$ 4,609	$ (198)	$ 1,525
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring charges, net	3,100
Facility Closing | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date	1,000
Facility Closing | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Cost Incurred to Date		$ 2,500
Employee Severance and Separation
Restructuring Cost and Reserve [Line Items]
Restructuring charges, net	2,648
Restructuring charges, tax	(200)
Employee Severance and Separation | Reduction in Force
Restructuring Cost and Reserve [Line Items]
Restructuring charges, net	1,500
Employee Severance and Separation | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring charges, net	1,500
Accelerated Depreciation | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring charges, net	700
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Exchange | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring charges, net	700
Facilities and Professional Fees | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring charges, net	$ 200