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Note 14 - Accumulated Other Comprehensive Loss (Tables)
 12 Months Ended
Mar. 31, 2017
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
 
 
Foreign
Currency
Translation
 
 
AOCL
 
Balance at March 31, 2014
   $
--
     $
--
  
Unrealized losses arising during the year
    
(234
 )    
(234
 )
Balance at March 31, 2015
    
(234
 )    
(234
 )
Unrealized losses arising during the year
    
(917
 )    
(917
 )
Balance at March 31, 2016
    
(1,151
 )    
(1,151
 )
Unrealized losses arising during the year
    
(609
 )    
(609
 )
Balance at March 31, 2017
   $
(1,760
 )   $
(1,760
 )