Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Nonperforming Assets - USD ($) $ in Thousands		Sep. 30, 2015		Dec. 31, 2014		Sep. 30, 2014
Nonperforming assets:
Nonaccrual loans		$ 3,207		$ 3,999		$ 5,366
Restructured loans in nonaccrual		5,781		5,288		2,360
Total nonperforming loans		8,988	[1]	9,287	[1]	7,726
Other real estate owned, net		4,194		4,744		5,145
Total nonperforming assets		$ 13,182		$ 14,031		$ 12,871
Ratio of nonperforming assets to loans, net of unearned income and deferred fees, plus other real estate owned		2.09%		2.30%		2.14%
Ratio of allowance for loan losses to nonperforming loans(1)	[2]	90.31%		88.97%		103.95%

[1] Only classes with past-due or nonaccrual loans are shown.

[2] The Company defines nonperforming loans as nonaccrual loans. Loans 90 days or more past due and still accruing and accruing restructured loans are excluded.