Short-Term Borrowings (Details) (USD $)
9 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2012
Minimum [Member]
Sep. 30, 2012
Maximum [Member]
Short-Term Borrowings (Textual) [Abstract]        
Maturity period of federal funds     1 day 4 days
Short-Term Borrowings (Additional Textual) [Abstract]        
Federal funds purchased $ 0 $ 0    
Treasury tax and loan deposits 0 0    
Securities sold under repurchase agreements 1,332,380 355,787    
Federal fund lines from correspondent banks $ 17,800,000