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16. Other Comprehensive Income (Loss)
 12 Months Ended
Apr. 30, 2017
Disclosure Text Block Supplement [Abstract]  
Other Comprehensive Income, Noncontrolling Interest [Text Block]
16. Other Comprehensive Income (Loss)

Changes in Accumulated Other Comprehensive Income (“AOCI”) by component and reclassifications out of AOCI are as follows (in thousands):

 
Change in
   
Foreign
        
 
Market Value
   
Currency
        
 
of Marketable
   
Translation
        
 
Securities
   
Adjustment
    
Total
  
Balance April 30, 2015, net of taxes
      
$
985
    
$
1,905
    
$
2,890
  
Items of other comprehensive income (loss)
before reclassification, pretax
        
(150
)
    
(753
)
    
(903
)
Tax effect
        
51
      
-
      
51
  
Items of other comprehensive income (loss)
before reclassification, net of taxes
        
(99
)
    
(753
)
    
(852
)
Reclassification adjustments, pretax **
    
(131
)
                        
Tax effect
    
57
      
(74
)
    
-
      
(74
)
Total other comprehensive income (loss), net of taxes
            
(173
)
    
(753
)
    
(926
)
Balance April 30, 2016, net of taxes
            
812
      
1,152
      
1,964
  
Items of other comprehensive income (loss)
before reclassification, pretax
            
534
      
(38
)
    
496
  
Tax effect
            
(182
)
    
-
      
(182
)
Items of other comprehensive income (loss)
before reclassification, net of taxes
            
352
      
(38
)
    
314
  
Reclassification adjustments, pretax **
    
28
                          
Tax effect
    
(25
)
    
3
      
-
      
3
  
Total other comprehensive income (loss), net of taxes
            
355
      
(38
)
    
317
  
Balance April 30, 2017, net of taxes
          
$
1,167
    
$
1,114
    
$
2,281
  

**The reclassification adjustments represent net realized gains on the sale or redemption of available-for-sale marketable securities that were reclassified from AOCI to Other income (expense), net.