Property, Plant and Equipment, Net (Tables)

12 Months Ended

Apr. 30, 2022

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property, plant and equipment, net at April 30, 2022 and 2021, consisted of the following (in thousands):

	April 30, 2022			April 30, 2021
Buildings and building improvements	$	2,576		$	2,721
Machinery, equipment and furniture		59,948			59,136
		62,524			61,857
Less accumulated depreciation		(53,960	)		(52,245	)
	$	8,564		$	9,612