Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
Securities held to maturity, estimated fair value	$ 4,345	$ 1,007
Preferred stock, par value
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	3,373,793	3,352,346
Common stock, shares outstanding	3,372,949	3,351,566
Treasury stock, shares	844	780