Borrowed Funds (Summary of Long Term Borrowings) (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2012
Junior Subordinated Debt [Member]
Sep. 30, 2012
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]        
FHLB advances $ 136,020 $ 160,314    
Junior subordinated debt, bearing variable interest rates 35,929 35,929    
Junior subordinated debt, bearing fixed interest rate 10,801 10,801    
Total long-term debt $ 182,750 $ 207,044    
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum     2.24% 1.00%
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Maximum     3.14% 3.69%
Debt Instrument, Interest Rate, Effective Percentage     9.88%