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Note 3 - Acquisition Activity - Pro Forma Financial Information (Details) - The Peoples Bank [Member] - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Summary of Operations |  |
Net interest income | $ 37,630 | $ 35,104
Provision for loan and lease losses | 2,622 | 2,242
Net interest income after provision for loan and lease losses | 35,008 | 32,862
Non-interest income | 5,786 | 5,472
Non-interest expense | 35,251 | 32,666
Income before income taxes | 5,543 | 5,668
Provision for income taxes | 1,440 | 4,037
Net income | $ 4,103 | $ 1,631
Basic net income per share (in dollars per share) | $ 0.66 | $ 0.26
Diluted net income per share (in dollars per share) | $ 0.62 | $ 0.24

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