Note 6 - Short-term Borrowings (Tables)
 12 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Short-term Debt [Table Text Block]
 
 
2017
 
 
2016
 
Balance at June 30
   $
23,986
     $
19,129
  
Average balance during the year
    
21,053
      
21,196
  
Maximum month-end balance
    
28,073
      
25,759
  
Average interest rate during the year
    
0.43
 %    
0.18
 %
Weighted average rate, June 30
    
0.82
 %    
0.20
 %
Schedule of Repurchase Agreements [Table Text Block]
 
 
Overnight and Continuous
 
 
 
2017
 
 
2016
 
U.S. government-sponsored entities and agencies pledged
   $
2,015
     $
2,066
  
Residential mortgage-backed securities pledged
    
20,923
      
16,864
  
Collateralized mortgage obligations pledged
    
2,355
      
1,510
  
Total pledged
   $
25,293
     $
20,440
  
Repurchase agreements
   $
23,986
     $
19,129