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Note 9 - Comprehensive Income
 6 Months Ended
Sep. 30, 2017
Notes to Financial Statements  
Comprehensive Income (Loss) Note [Text Block]
Note
9
- Comprehensive Income
 
The following table summarizes the changes in each component of accumulated other comprehensive income (“AOCI”), net of tax (in thousands):
 
   
Foreign Currency
Translation
    
 
AOCI
  
Balance at
June 30, 2017
   $
(1,009
 )   $
(1,009
 )
Quarter ended September 30
, 2017:
                
Unrealized gain
arising during the period
    
948
      
948
  
Balance at
September 30, 2017
   $
(61
 )   $
(61
 )
 
   
Foreign Currency
Translation
    
 
AOCI
  
Balance at June 30
, 2016
   $
(1,101
 )   $
(1,101
 )
Quarter ended September 30, 2016:
                
Unrealized loss
arising during the period
    
(185
 )    
(185
 )
Balance at September 30
, 2016
   $
(1,286
 )   $
(1,286
 )
 
   
Foreign Currency
Translation
    
 
AOCI
  
Balance at March 31
, 2017
   $
(1,760
 )   $
(1,760
 )
Six months ended September 30, 2017:
                
Unrealized gain
arising during the period
    
1,699
      
1,699
  
Balance at September 30
, 2017
   $
(61
 )   $
(61
 )
 
   
Foreign Currency
Translation
    
 
AOCI
  
Balance at March 31
, 2016
   $
(1,151
 )   $
(1,151
 )
Six months ended September 30, 2016:
                
Unrealized loss
arising during the period
    
(135
 )    
(135
 )
Balance at September 30
, 2016
   $
(1,286
 )   $
(1,286
 )