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Note 12 - Supplemental Cash Flow Information (Tables)
 12 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
(In thousands)
 
2017
 
  
2016
    
2015
  
Cash payments for:
                        
Interest
 
$
529
 
   $
50
     $
48
  
Income taxes
 
$
2,618
 
   $
5,079
     $
1,078
  
Issuance of common shares as compensation
 
$
409
 
   $
248
     $
191