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Note 9 - Property and Equipment (Tables)
 9 Months Ended
Jan. 31, 2017
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
January 31,
    
April 30,
  
($ in thousands)
  
2017
    
2016
  
Land
   $
-
    $
726
 
Building and leasehold improvements
    
510
     
5,190
 
Furniture and equipment
   
3,748
     
4,156
 
     
4,258
     
10,072
 
Accumulated depreciation and amortization
    
(3,360
 )    
(6,451
 )
Total property and equipment, net
   $
898
    $
3,621