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Note 3 - Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Weighted Average Number of Shares [Table Text Block] |
|  | 2020 |  |  | 2019 |
Weighted-average common shares issued |  |  | 7,302,845 |  |  |  | 7,286,554 |
Average treasury stock shares |  |  | (917,495 | ) |  |  | (816,146 | )
Weighted-average common shares and common stock equivalents used to calculate basic earnings per share |  |  | 6,385,350 |  |  |  | 6,470,408 |
Additional common stock equivalents (stock options and restricted stock) used to calculate diluted earnings per share |  |  | 19,174 |  |  |  | 32,398 |
Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share |  |  | 6,404,524 |  |  |  | 6,502,806 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + 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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