Note 7 - Deposits (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Maturities of Certificates of Deposit [Table Text Block]
   
Under $250,000
    
$250,000 and over
  
2017
   $
72,001
    $
6,774
 
2018
    
24,134
     
3,219
 
2019
    
15,514
     
4,936
 
2020
    
14,811
     
763
 
2021
    
9,101
     
1,016
 
Thereafter
    
-
     
-
 
Total
   $
135,561
    $
16,708