Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Summary of Nonperforming Assets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013		Sep. 30, 2013
Summary of Nonperforming Assets [Abstract]
Nonaccrual loans	$ 5,366		$ 5,732		$ 10,194
Restructured loans in nonaccrual	2,360		852		1,042
Total nonperforming loans	7,726	[1]	6,584	[1]	11,236
Other real estate owned, net	5,145		4,712		973
Total nonperforming assets	$ 12,871		$ 11,296		$ 12,209
Ratio of nonperforming assets to loans, net of unearned income and deferred fees, plus other real estate owned	2.14%		1.88%		2.06%
Ratio of allowance for loan losses to nonperforming loans(1)	103.95%	[2]	124.95%	[2]	72.00%	[2]

[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.