Note 6 - Deposits (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Contractual Maturities of Time Deposits [Table Text Block]
2017
   $
178,607
 
2018
    
39,613
 
2019
    
16,594
 
2020
    
14,129
 
2021
    
24,187
 
Total time deposits
   $
273,130