CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) (USD $)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY [Abstract]
Issuance of common stock for stock dividends and stock purchase plan, shares	19,628
Issuance of treasury stock upon exercise of employee stock options, shares	4,028	815
Cash dividends, per share	$ 0.75	$ 0.72