Borrowed Funds (Summary of Long Term Borrowings) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Debt Instrument [Line Items]    
Total long-term debt $ 206,515 $ 207,044
Junior Subordinated Debt [Member]
   
Debt Instrument [Line Items]    
Junior subordinated debt, bearing variable interest rates 35,929 35,929
Junior subordinated debt, bearing fixed interest rate 10,801 10,801
Federal Home Loan Bank Advances [Member]
   
Debt Instrument [Line Items]    
FHLB advances $ 159,785 $ 160,314
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum 1.00%  
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Maximum 4.55%