Note 4 - Fair Value Disclosure Measurements (Details) - Additional Quantitative Information About Assets Measured at Fair Value on Non-Recurring Basis (USD $) In Thousands, unless otherwise specified			9 Months Ended						9 Months Ended
	Sep. 30, 2013 Appraisal Adjustments [Member] Impaired Loans [Member]	Dec. 31, 2012 Appraisal Adjustments [Member] Impaired Loans [Member]	Sep. 30, 2013 Appraisal Adjustments [Member] Minimum [Member] Impaired Loans [Member]	Sep. 30, 2013 Appraisal Adjustments [Member] Maximum [Member] Impaired Loans [Member]	Sep. 30, 2013 Liquidation Expenses [Member] Minimum [Member] Impaired Loans [Member]	Sep. 30, 2013 Liquidation Expenses [Member] Maximum [Member] Impaired Loans [Member]	Sep. 30, 2013 Appraisal of Collateral [Member] Other Real Estate Owned [Member]	Dec. 31, 2012 Appraisal of Collateral [Member] Other Real Estate Owned [Member]	Sep. 30, 2013 Appraisal of Collateral [Member] Minimum [Member] Other Real Estate Owned [Member]	Sep. 30, 2013 Appraisal of Collateral [Member] Maximum [Member] Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Estimate	$ 15,467	$ 17,600					$ 2,719	$ 1,846
Range			0.00%	(68.00%)	0.00%	(45.80%)			0.00%	(10.00%)