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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | 2020 |  |  | 2019 |
Basic earning per share computation: |  |  |  |  |  |  |  |
Net income |  | $ | 18,850,063 |  |  | $ | 17,194,169 |
Weighted average common shares outstanding |  |  | 9,148,244 |  |  |  | 9,236,989 |
Basic EPS |  | $ | 2.06 |  |  | $ | 1.86 |

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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://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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