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Consolidated Statements of Changes in Shareholders' Equity (unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Dec. 31, 2011	Sep. 30, 2012	Sep. 30, 2011
Consolidated Statements of Changes in Shareholders' Equity (Unaudited) [Abstract]
Net changes in unrealized loss on available for sale securities, income tax expense	$ (155)	$ 597	$ 307
Net changes in unrecognized past service costs of employee benefit plans, income tax expense (benefit)	$ 54		$ (2)

Tax effect of the increase (decrease) in the value of the projected benefit obligation and the (increase) decrease in the value of the 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 of unrealized holding gain (loss) before reclassification adjustments and transfers on available-for-sale securities.

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