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Investment Securities (Schedule Of Gross Realized Losses On Equity And Debt Securities) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	$ 572	$ 454
Gross realized losses	(79)	(378)
Other-than-temporary impairment losses		(97)
Net gains	493	(21)
Equity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	427	140
Other-than-temporary impairment losses		(97)
Net gains	427	43
Debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	145	314
Gross realized losses	(79)	(378)
Net gains	$ 66	$ (64)

The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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