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Note 4 - Debt and Equity Securities (Detail) - Credit loss component recognized in earnings on debt securities: (USD $)	3 Months Ended
	Mar. 31, 2013
Balance	$ 6,178,000
Recognition of actual losses	(169)
Balance	$ 6,009,000

The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

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