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Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements Of Changes In Shareholders' Equity [Abstract]
Unrealized loss, income tax expense	$ 1,316	$ 1,691	$ 128
Post-retirement health insurance benefit adjustment, tax	$ 42
Cash dividends per share	$ 0.19	$ 0.28	$ 0.73

Tax effect on the accumulated change in the value of either the projected benefit obligation or plan assets resulting from experience different from that assumed or from a change in an actuarial assumption that has not been recognized in net periodic benefit cost.

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- Definition

Tax effect on gross appreciation or the gross loss in value of the total of unsold securities during the period being reported on.

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