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Derivative Activities (Narratives) (Details) (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]      
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss) $ 378,000 $ 1,462,000  
Notional Amount Purchased Option 23,800,000   28,000,000
Embedded Derivative, Fair Value of Embedded Derivative Liability 12,100,000   15,700,000
Notional Amount Embedded Option 22,900,000   26,900,000
Interest Rate Cap [Member]
      
Derivative Instruments, Gain (Loss) [Line Items]      
Derivative, Notional Amount 110,000,000   110,000,000
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss) $ 10,500,000