Equity (parenthetical) (USD $) In Thousands, except Per Share data	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Cash Dividends Paid, per Share	$ 0.73	$ 0.71
Net Unrealized Securities Holding Gains Arising During the Period, Pre-tax	$ 8,115	$ 8,018
Reclassification Adjustment for Net Securities Gains Included In Net Income, Pre-tax	2,795	1,496
Amortization of Net Retirement Plan Actuarial Loss,Pre-tax	767	754
Accretion of Net Retirement Plan Prior Service Credit, Pre-tax	$ 94	$ 132

The change in other comprehensive income due to the amortization of the net prior service costs (credit) into net periodic pension costs.

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- Definition

Amounts recognized in other comprehensive income (but not yet recognized in net periodic benefit cost), including the net gain (loss) and net prior service cost (credit) arising during the period. Also includes reclassification adjustments out of other comprehensive income as a result of being recognized as components of net periodic benefit cost for the period. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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- Definition

Pre tax reclassification adjustment for gains or losses realized upon the sale of securities.

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+ Details

- Definition

Gross appreciation or the gross loss in value of the total of unsold available-for-sale securities during the period being reported (except when designated as a fair value hedge).

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