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Note 23 - Quarterly Data (Unaudited) - Summary of Quarterly Data (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015
Interest income | $ 7,721 | $ 7,760 | $ 7,478 | $ 7,196 | $ 7,513 | $ 7,328 | $ 7,735 | $ 7,321 | $ 30,155 | $ 29,897
Interest expense | 588 | 587 | 561 | 535 | 549 | 561 | 565 | 614 | 2,271 | 2,289
Net interest income | 7,133 | 7,173 | 6,917 | 6,661 | 6,964 | 6,767 | 7,170 | 6,707 | 27,884 | 27,608
Provision for loan losses | 1,814 | 680 | 536 | 167 | 415 | (78) | 45 | (166) | 3,197 | 216
Net interest income after provision (reduction in reserve) for loan losses | 5,319 | 6,493 | 6,381 | 6,494 | 6,549 | 6,845 | 7,125 | 6,873 | 24,687 | 27,392
Non-interest income: |  |  |  |  |  |  |  |  |  |
Income | 1,165 | 1,567 | 1,480 | 989 | 1,176 | 996 | 1,068 | 1,291 | 5,201 | 4,531
Expense | 6,826 | 7,348 | 7,255 | 7,066 | 7,203 | 7,090 | 7,107 | 6,977 | 28,495 | 28,377
Income (loss) before income taxes | (342) | 712 | 606 | 417 | 522 | 751 | 1,086 | 1,187 |  |
Provision for (benefit from) income taxes | (237) | 162 | 144 | 100 | 81 | 207 | 312 | 351 | 169 | 951
Net income | $ (105) | $ 550 | $ 462 | $ 317 | $ 441 | $ 544 | $ 774 | $ 836 | $ 1,224 | $ 2,595
Earnings per common share: |  |  |  |  |  |  |  |  |  |
Basic net income per share (in dollars per share) | $ (0.02) | $ 0.09 | $ 0.08 | $ 0.05 | $ 0.07 | $ 0.09 | $ 0.13 | $ 0.14 | $ 0.20 | $ 0.42
Diluted net income per share (in dollars per share) | $ (0.02) | $ 0.09 | $ 0.07 | $ 0.05 | $ 0.07 | $ 0.09 | $ 0.12 | $ 0.13 | $ 0.19 | $ 0.41

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