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Derivative Instruments (Table)
 9 Months Ended
Sep. 30, 2012
Derivative instruments and hedging activities disclosure abstract  
Schedule of Derivative Instruments [Table Text Block]
          Other
     Other Other  noninterest
     Assets Liabilities  income
     Estimated Estimated  Gains
(Dollars in thousands) Notional Fair Value Fair Value   (Losses)
Interest rate swap agreements:         
Pay fixed / receive variable$ 5,454 —      1,281 $ 44
Pay variable / receive fixed  5,454  1,281 —       (44)
 Total interest rate swap agreements$ 10,908  1,281  1,281 $—