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Note 6 - Other Borrowed Funds (Tables)
3 Months Ended
Mar. 31, 2018
Notes Tables  
Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank [Table Text Block]
   
FHLB Borrowings
   
Promissory Notes
   
Totals
 
                         
March 31, 2018
  $
35,718
    $
6,885
    $
42,603
 
December 31, 2017
  $
28,625
    $
7,324
    $
35,949
 
Schedule of Maturities of Long-term Debt [Table Text Block]
   
FHLB
Borrowings
   
Promissory
Notes
   
 
Totals
 
                         
2018
  $
2,651
    $
1,403
    $
4,054
 
2019
   
3,651
     
3,018
     
6,669
 
2020
   
3,380
     
519
     
3,899
 
2021
   
3,000
     
541
     
3,541
 
2022
   
2,841
     
564
     
3,405
 
Thereafter
   
20,195
     
840
     
21,035
 
    $
35,718
    $
6,885
    $
42,603