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INVESTMENT ASSETS (Tables)
 9 Months Ended
Jan. 31, 2017
Investment Assets [Abstract]  
Schedule Of Investment Assets [Table Text Block]
Investment assets, net consist of the following (in thousands):
 
 
 
January 31, 
2017
 
April 30, 
2016
 
 
 
 
 
 
 
 
 
Land held for long-term investment
 
$
9,715
 
$
9,717
 
Other
 
 
-
 
 
609
 
 
 
$
9,715
 
$
10,326