Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Nonperforming Assets (Details) - USD ($) $ in Thousands		Dec. 31, 2016		Dec. 31, 2015
Nonperforming assets:
Nonaccrual loans		$ 1,168		$ 2,043
Restructured loans in nonaccrual		4,687		4,639
Total nonperforming loans		5,855	[1]	6,682
Other real estate owned, net		3,156		4,165
Total nonperforming assets		$ 9,011		$ 10,847
Ratio of nonperforming assets to loans, net of unearned income and deferred fees and costs, plus other real estate owned		1.38%		1.74%
Ratio of allowance for loan losses to nonperforming loans(1)	[2]	141.76%		124.17%

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

[2] 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.