Consolidated Statements of Changes in Stockholders' Equity(Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Consolidated Statements of Changes in Shareholders' Equity
Common Stock, Dividends, Per Share, Declared	$ 0.44	$ 0.54
Treasury shares issued to fund dividend reinvestment plan, shares		34,837
Treasury shares issued under stock option plan, shares		1,611
Common stock issued under dividend reinvestment plan, shares	52,659