Property, Plant and Equipment (Tables)

9 Months Ended

Jan. 31, 2018

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)	2018			2017
Land	$	4,751		$	3,581
Buildings and improvements	93,902			81,172
Buildings and improvements - capital leases	11,203			11,202
Machinery and equipment	268,063			187,836
Machinery and equipment - capital leases	29,918			29,378
Construction in progress	28,600			10,838
	436,437			324,007
Less accumulated amortization and depreciation	(225,809		)	(216,074		)
Total	$	210,628		$	107,933