Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Nonperforming Assets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Nonperforming Assets [Abstract]
Nonaccrual loans	$ 3,999		$ 5,732
Restructured loans in nonaccrual	5,288		852
Total nonperforming loans	9,287		6,584
Other real estate owned, net	4,744		4,712
Total nonperforming assets	$ 14,031		$ 11,296
Ratio of nonperforming assets to loans, net of unearned income and deferred fees, plus other real estate owned	2.30%		1.88%
Ratio of allowance for loan losses to nonperforming loans(1)	88.97%	[1]	124.95%	[1]

[1] The Company defines nonperforming loans as total nonaccrual and restructured loans that are nonaccrual. Loans 90 days past due and still accruing and accruing restructured loans are excluded.