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Investment Securities (Details 4) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Company's gross gains and gross losses realized from the sale of securities
Gross realized gains	$ 315	$ 208	$ 434	$ 6,889
Gross realized losses	(87)	(30)	(164)	(1,651)
Net (loss) gain on sale of securities	$ 228	$ 178	$ 270	$ 5,238

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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