Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Nonperforming Assets - USD ($) $ in Thousands		Jun. 30, 2015		Dec. 31, 2014		Jun. 30, 2014
Nonperforming assets:
Nonaccrual loans		$ 2,870		$ 3,999		$ 2,335
Restructured loans in nonaccrual		6,035		5,288		2,674
Total nonperforming loans		8,905	[1]	9,287	[1]	5,009
Other real estate owned, net		4,441		4,744		5,293
Total nonperforming assets		$ 13,346		$ 14,031		$ 10,302
Ratio of nonperforming assets to loans, net of unearned income and deferred fees, plus other real estate owned		2.11%		2.30%		1.72%
Ratio of allowance for loan losses to nonperforming loans(1)	[2]	91.31%		88.97%		159.13%

[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.