Note 9 - Fair Value Measurements (Detail) - Assets measured at fair value on a nonrecurring basis (USD $) In Thousands	Sep. 30, 2011		Dec. 31, 2010
Fair Value	$ 16,036		$ 6,643
Total losses	(1,045)		(1,493)
Non-Covered Other Real Estate Owned [Member]
Fair Value	5,513	[1]	1,863	[1]
Total losses	(600)		(664)
Non-Covered Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value	5,513	[1]	1,863	[1]
Covered Other Real Estate Owned [Member]
Fair Value	8,651	[2]
Total losses	(445)
Covered Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value	8,651	[2]
Originated Impaired Loans [Member]
Fair Value	1,872	[3]	4,780	[3]
Total losses			(829)
Originated Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value	1,872	[3]	4,780	[3]
Fair Value, Inputs, Level 2 [Member]
Fair Value	$ 16,036		$ 6,643

[1] Represents the fair value of foreclosed real estate owned that was measured at fair value subsequent to their initial classification as foreclosed assets.

[2] Represents the fair value of foreclosed real estate owned that is covered by the Indemnification Agreement with the FDIC where the real estate was written down subsequent to its initial classification as foreclosed assets. Total losses are reduced by the 80% indemnified loss percentage.

[3] Represents carrying value of loans for which adjustments are predominantly based on the appraised value of the collateral and loans considered impaired under FASB ASC 310-10-35, Subsequent Measurement of Receivables, where a specific reserve has been established or a chargeoff has been recorded.