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Note 4 - Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2021
Notes Tables |
Schedule of Weighted Average Number of Shares [Table Text Block] |
|  | For the Three |  |  | For the Six |
|  | Months Ended |  |  | Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Weighted-average common shares issued |  |  | 7,324,475 |  |  |  | 7,298,829 |  |  |  | 7,320,989 |  |  |  | 7,298,785 |
Average treasury stock shares |  |  | (1,027,404 | ) |  |  | (929,362 | ) |  |  | (989,633 | ) |  |  | (905,497 | )
Weighted-average common shares and common stock equivalents used to calculate basic earnings per share |  |  | 6,297,071 |  |  |  | 6,369,467 |  |  |  | 6,331,356 |  |  |  | 6,393,288 |
Additional common stock equivalents (stock options and restricted stock) used to calculate diluted earnings per share |  |  | 15,159 |  |  |  | 18,651 |  |  |  | 16,989 |  |  |  | 19,297 |
Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share |  |  | 6,312,230 |  |  |  | 6,388,118 |  |  |  | 6,348,345 |  |  |  | 6,412,585 |

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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=124432515&loc=d3e3550-109257 + Details
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