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Note A - Organization and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Jun. 30, 2018
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
For the Years Ended June 30,
  
   
201
8
    
201
7
  
Numerator
  
 
 
 
  
 
 
 
Net income
   $
5,051
     $
7,235
  
Denominator
  
 
 
 
  
 
 
 
Basic weighted average common shares outstanding
    
6,641
      
6,577
  
Dilutive effect of stock options and restricted stock shares
    
245
      
79
  
Diluted weighted average common shares outstanding
    
6,886
      
6,656
  
Basic net income per common share
   $
0.76
     $
1.10
  
Diluted net income per common share
   $
0.73
     $
1.09