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Note 4 - Per Share Data (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Years Ended |
|  | Dec. 31, |  |  | Dec. 31, |
|  | 2019 |  |  | 2018 |
Basic |  |  |  |  |  |  |  |
Net income |  | $ | 19,504,000 |  |  | $ | 22,013,000 |
Less: Dividends and undistributed earnings allocated to participating securities |  |  | (100,000 | ) |  |  | (110,000 | )
Net income attributable to common shares |  | $ | 19,404,000 |  |  | $ | 21,903,000 |
Basic weighted-average common shares outstanding |  |  | 13,298,736 |  |  |  | 12,219,209 |
Basic earnings per common share (a) |  | $ | 1.46 |  |  | $ | 1.79 |
Diluted |  |  |  |  |  |  |  |
Net income attributable to common shares |  | $ | 19,404,000 |  |  | $ | 21,903,000 |
Basic weighted-average common shares outstanding |  |  | 13,298,736 |  |  |  | 12,219,209 |
Dilutive effect of potential common stock arising from stock options |  |  | 22,823 |  |  |  | 38,159 |
Diluted weighted-average common shares outstanding |  |  | 13,321,559 |  |  |  | 12,257,368 |
Diluted earnings per common share (a) |  | $ | 1.46 |  |  | $ | 1.79 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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