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Note 18 - Quarterly Results of Operations (Unaudited) (Tables)
 12 Months Ended
Jun. 30, 2018
Notes Tables  
Quarterly Financial Information [Table Text Block]
   
201
8
  
   
First
    
Second
    
Third
    
Fourth
  
Net sales
   $
214,379
     $
209,751
     $
216,743
     $
227,508
  
Gross profit
    
74,181
      
71,526
      
73,772
      
82,320
  
Net income
    
13,998
      
(2,807
 )    
12,800
      
12,610
  
EARNINGS PER SHARE
(1)
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Basic
   $
1.10
     $
(0.22
 )   $
1.01
     $
0.99
  
Diluted
   $
1.10
     $
(0.22
 )   $
1.00
     $
0.99
  
   
 
201
7
  
   
First
    
Second
    
Third
    
Fourth
  
Net sales
   $
179,600
     $
173,854
     $
184,715
     $
217,089
  
Gross profit
    
61,776
      
56,894
      
61,348
      
72,736
  
Net income
    
14,344
      
10,442
      
7,660
      
14,131
  
EARNINGS PER SHARE
(1)
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
Basic
   $
1.13
     $
0.82
     $
0.60
     $
1.12
  
Diluted
   $
1.12
     $
0.82
     $
0.60
     $
1.11