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Note 16 - Income Taxes (Tables)
 9 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   
Three Months Ended
    
Nine Months Ended
  
   
March 31
    
March 31
  
   
2020
    
2019
    
2020
    
2019
  
Reconciliation of effective tax rate:
  
 
 
 
  
 
 
 
  
 
 
 
  
 
 
 
                                 
Provision for income taxes at the anticipated annual tax rate
    
10.8
%
    
(0.7
)%
    
16.7
%
    
13.6
%
Uncertain tax positions
    
1.5
      
(0.1
 )    
(0.3
 )    
0.6
  
Deferred income tax adjustments
    
(16.7
 )    
-
      
(2.5
 )    
6.7
  
Shared-based compensation
    
4.4
      
(3.6
 )    
3.7
      
(0.9
 )
Effective tax rate
    
-
%
    
(4.4
)%
    
17.6
%
    
20.0
%