Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CASH DIVIDENDS DECLARED PER COMMON SHARE	$ 0.76	$ 0.72	$ 0.72
Accretion of discount on preferred stock			$ 196,000
Deemed dividend on company's exit from the U.S. Treasury's Capital Purchase Program			$ 4,400,000
RETAINED EARNINGS
CASH DIVIDENDS DECLARED PER COMMON SHARE	$ 0.76	$ 0.72	$ 0.72