Property, Plant And Equipment (Tables)

12 Months Ended

Apr. 30, 2014

Property, Plant And Equipment [Abstract]

Components Of Property, Plant And Equipment

		APRIL 30
(in thousands)		2014		2013
Land	$	5,929	$	5,929
Buildings and improvements		68,224		67,444
Buildings and improvements - capital leases		11,202		11,202
Machinery and equipment		155,162		152,154
Machinery and equipment - capital leases		28,111		26,966
Construction in progress		2,461		1,481
		271,089		265,176
Less accumulated amortization and depreciation		(197,040)		(191,112)
Total	$	74,049	$	74,064