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Note 5 - Fair Value Measurements (Detail) - Impairment Charges Recorded In Earnings (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Impaired Loans [Member]
Impairment charges:
Impaired loans	$ 927	$ 1,975	$ 5,233	$ 3,109
OREO [Member]
Impairment charges:
OREO	641	1,339	1,150	1,568
Total [Member]
Impairment charges:
Total	$ 1,568	$ 3,314	$ 6,383	$ 4,677

Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities.

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- Definition

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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