Note 17 - Quarterly Results (unaudited) (Tables)
 12 Months Ended
Mar. 31, 2017
Notes Tables  
Quarterly Financial Information [Table Text Block]
 
 
First
 
 
Second
 
 
Third
 
 
Fourth
 
2017
 
Quarter
 
 
Quarter
 
 
Quarter
 
 
Quarter
 
Revenues
   $
21,114
     $
24,409
     $
23,843
    $
24,299
 
Gross profit
    
12,014
      
13,724
      
13,537
      
13,964
  
Net income
    
1,930
      
2,358
      
3,252
      
3,643
  
Net Income per share – basic
   $
0.53
     $
0.64
     $
0.88
     $
0.98
 
Net Income per share – diluted
    
0.51
      
0.62
      
0.84
      
0.94
  
 
 
First
 
 
Second
 
 
Third
 
 
Fourth
 
201
6
 
Quarter
 
 
Quarter
 
 
Quarter
 
 
Quarter
 
Revenues
   $
18,158
     $
21,776
    $
19,913
    $
24,812
 
Gross profit
    
11,141
      
13,067
      
12,209
      
14,996
  
Net income
    
2,755
      
1,826
      
2,597
      
3,991
  
Net Income per share – basic
   $
0.77
     $
0.51
     $
0.72
     $
1.10
 
Net Income per share – diluted
    
0.74
      
0.48
      
0.69
      
1.06
  
 
 
First
 
 
Second
 
 
Third
 
 
Fourth
 
201
5
 
Quarter
 
 
Quarter
 
 
Quarter
 
 
Quarter
 
Revenues
   $
16,400
     $
18,540
    $
17,830
    $
18,560
 
Gross profit
    
9,705
      
11,123
      
11,052
      
11,512
  
Net income
    
1,881
      
3,060
      
2,403
      
2,239
  
Net Income per share – basic
   $
0.54
    $
0.87
    $
0.68
    $
0.63
 
Net Income per share – diluted
    
0.51
      
0.84
      
0.66
      
0.61