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15. Derivative financial instruments (Tables)
9 Months Ended
Sep. 30, 2013
Investments, All Other Investments [Abstract]  
Derivative financial instrument

A summary of this sole derivative financial instrument as of September 30, 2013 follows:

 

    September 30, 2013  
          Derivative     Net Ineffective  
    Notional     Fair Value     Hedge Gains  
Dollars in thousands   Amount     Asset     Liability     (Losses)  
CASH FLOW HEDGES                        
Pay-fixed/receive-variable interest rate swaps                    
Long term borrowings   $ 40,000     $ -     $ 117     $ -  
    $ 40,000     $ -     $ 117     $ -