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Derivative Instruments (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Derivative [Line Items]    
Gross notional amount related to interest rate swaps $ 21,600,000  
Other Liabilities
   
Derivative [Line Items]    
Fair value of interest rate derivative 2,800,000 0
Other Interest Income
   
Derivative [Line Items]    
Change in fair value of interest swaps recognized in earnings $ 200,000 $ 0