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Note 10 - Earnings Per Share (Tables)
 12 Months Ended
Mar. 31, 2015
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
 
 
Net Income
(Numerator)
 
 
Shares
(Denominator)
 
 
Per Share
Amount
 
 
 
(in thousands, except per share amounts)
 
Year ended March 31, 2015:
                        
Basic loss per share
  $ (24
)
     5,517     $ (0.00
)
Diluted loss per share
  $ (24
)
     5,517     $ (0.00
)
Year ended March 31, 2014:
                        
Basic loss per share
  $ (420
)
     5,478     $ (0.08
)
Diluted loss per share
  $ (420
)
     5,478     $ (0.08
)
Year ended March 31, 2013:
                        
Basic income per share
  $ 4,164       5,455     $ 0.76  
Effective dilutive securities— Common stock options
    —       200       (0.02
)
Diluted income per share
  $ 4,164       5,655     $ 0.74