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Note 6 - Other Borrowed Funds (Tables)
 3 Months Ended
Mar. 31, 2017
Notes Tables  
Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank [Table Text Block]
   
FHLB Borrowings
    
Promissory Notes
    
Totals
  
                         
March 31, 2017
   $
31,515
     $
7,770
     $
39,285
  
December 31, 2016
   $
29,203
     $
7,882
     $
37,085
  
Schedule of Maturities of Long-term Debt [Table Text Block]
   
FHLB
Borrowings
    
Promissory
Notes
    
Totals
  
                         
2017
   $
5,200
     $
1,827
     $
7,027
  
2018
    
2,623
      
2,261
      
4,884
  
2019
    
2,489
      
1,219
      
3,708
  
2020
    
2,335
      
519
      
2,854
  
2021
    
2,059
      
541
      
2,600
  
Thereafter
    
16,809
      
1,403
      
18,212
  
    $
31,515
     $
7,770
     $
39,285