Stockholders Equity Parenthetical (Parentheticals) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash Dividends Paid, per Share	$ 0.25	$ 0.243
Stock Options Exercised - Shares	56,226	14,717
Shares Issued Under the Employee Stock Purchase Plan - Shares	4,542	4,721
Shares Issued for Dividend Reinvestment Plans - Shares	19,032	18,896
Purchase of Treasury Stock - Shares	90,017	31,385
Acquisition of Subsidiary - Shares	0	129,447
Allocation of ESOP Stock - Shares	7,563	9,414