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Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Ratios of Allowance for Loan Losses | 6 Months Ended | 12 Months Ended
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Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Ratios of Allowance for Loan Losses [Abstract] |  |  |  |
Ratio of allowance for loan losses to the end of period loans, net of unearned income and deferred fees |  | 1.30% | 1.34% | 1.36%
Ratio of net charge-offs to average loans, net of unearned income and deferred fees(1) | [1] | 0.22% | 0.36% | 0.27%
[1] | Net charge-offs are on an annualized basis.

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- Definition Represents ratio of allowance for loan losses to the end of period loans, net of unearned income and deferred fees. + References No definition available. + Details
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- Definition Represents ratio of net charge-offs to average loans, net of unearned income and deferred fees. + References No definition available. + Details
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Data Type: | num:percentItemType
Balance Type: | na
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- References No definition available. + Details
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