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Note 6 - Debt and Equity Securities (Detail) - Credit loss component recognized in earnings on debt securities for which a portion of OTTI was recognized in AOCI: (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Balance	$ 6,922
Recognition of actual losses	(1,271)
OTTI charges due to credit loss recorded in earnings	776	1,578	2,045
Securities sold during the period	(249)
Balance	$ 6,178	$ 6,922

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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- Definition

The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

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