Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Jun. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Dec. 31, 2010
Consolidated Balance Sheets [Abstract]            
Loans, allowance for loan losses $ 5,979 $ 5,360 $ 4,776 $ 4,043 $ 3,739 $ 2,889