Securities (Details Textual) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Securities (Textual) [Abstract]
Callable Securities in Investment Portfolio	$ 10.5	$ 13.0
Investment Securities Pledged	$ 380.3	$ 389.7
Investments in Obligations of Individual States Counties or Municipalities	exceeded 10% of Stockholders’ Equity	exceeded 10% of Stockholders’ Equity