Property, Plant and Equipment (Tables)

9 Months Ended

Jan. 31, 2021

Property, Plant and Equipment [Abstract]

Components Of Property, Plant And Equipment

The components of property, plant and equipment were:

	January 31,		April 30,
(in thousands)	2021		2020
Land	$	4,431	$	4,431
Buildings and improvements	115,515		120,819
Buildings and improvements - finance leases	11,636		11,636
Machinery and equipment	309,152		312,806
Machinery and equipment - finance leases	31,440		30,911
Construction in progress	19,608		8,164
	491,782		488,767
Less accumulated amortization and depreciation	(290,897)		(284,943)
Total	$	200,885	$	203,824