PROPERTY, PLANT AND EQUIPMENT: (Tables)

12 Months Ended

Apr. 30, 2013

Property, Plant and Equipment Disclosure [Abstract]

Property, Plant and Equipment [Table Text Block]

Property, plant and equipment consist of:	April 30,
	2013		2012
	(in thousands)
Land, buildings and improvements	$	29,500	$	29,624
Furniture and equipment		23,736		22,836
		53,236		52,460
Less accumulated depreciation		(27,950)		(26,536)
	$	25,286	$	25,924