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Note 8 - Net (Loss) Income Per Share (Tables)
9 Months Ended
Dec. 31, 2017
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three
M
onths
E
nded
December
3
1
,
   
Nine
M
onths
E
nded
December
3
1
,
 
   
201
7
   
201
6
   
201
7
   
201
6
 
Net
(loss) income available for shareholders
  $
(11,086
)   $
3,252
    $
(7,216
)   $
7,540
 
Weighted average outstanding shares of common stock
   
3,781
     
3,688
     
3,765
     
3,668
 
Dilutive effect of stock options
   
--
     
180
     
--
     
167
 
Common stock and equivalents
   
3,781
     
3,868
     
3,765
     
3,835
 
                                 
Net
(loss) income per share:
                               
Basic
  $
(2.93
)   $
0.88
    $
(1.92
)   $
2.06
 
Diluted
   
(2.93
)    
0.84
     
(1.92
)    
1.97