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PROPERTY, PLANT AND EQUIPMENT (Tables)
9 Months Ended
Jan. 31, 2018
Property, Plant and Equipment Disclosure [Abstract]  
Property, Plant and Equipment [Table Text Block]
Property, plant and equipment, net consist of:
 
 
 
January 31,
 
April 30,
 
 
 
2018
 
2017
 
 
 
(in thousands)
 
Land, buildings and improvements
 
$
15,925
 
$
15,995
 
Furniture and equipment
 
 
18,473
 
 
18,350
 
 
 
 
34,398
 
 
34,345
 
Less accumulated depreciation
 
 
(24,370)
 
 
(23,493)
 
 
 
$
10,028
 
$
10,852