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Note 9 - Short-Term Borrowings (Tables)
12 Months Ended
Dec. 31, 2012
Schedule of Short-term Debt [Table Text Block]
(Dollar amounts in thousands)
 
2012
   
2011
   
2010
 
                   
Balance at year-end
  $ 6,538     $ 7,392     $ 7,632  
Average balance outstanding
    7,005       7,276       7,320  
Maximum month-end balance
    7,458       7,552       8,178  
Weighted-average rate at year-end
    2.97 %     3.14 %     3.10 %
Weighted-average rate during the year
    3.15 %     3.23 %     3.40 %