Note 8 - Employee Benefit Plans (Tables)
 12 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]
 
 
Restricted Stock
Awards
 
 
Weighted-Average
Grant Date Fair
Value Per Share
 
Outstanding at June 30, 2016
    
3,564
     $
15.33
  
Expired
    
(2,135
 )    
15.05
  
Non-vested at June 30, 2017
    
1,429
      
15.75