Consolidated Condensed Statements Of Changes In Stockholders' Equity (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Statement of Stockholders' Equity [Abstract]
Change in pension plan assets and benefit obligations, Tax effect	$ 222
Unrealized net holding gain (loss) on cash flow hedge, tax	139	104
Unrealized net holding gain (loss) on securities available-for-sale, tax	$ 326	$ (4,578)
Cash dividends on common stock per share	$ 1.88	$ 1.88