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OTHER ASSETS (Tables)
9 Months Ended
Jan. 31, 2018
Disclosure Text Block Supplement [Abstract]  
Schedule of Other Assets [Table Text Block]
Other assets consist of:
 
 
 
January 31,
 
April 30,
 
 
 
2018
 
2017
 
 
 
(in thousands)
 
Prepaid expenses
 
$
1,426
 
$
1,491
 
Deferred order entry costs
 
 
533
 
 
553
 
Other
 
 
279
 
 
266
 
 
 
$
2,238
 
$
2,310