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Note 10 - Earnings Per Share (Tables) | 3 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended December 31, |
|  | 2021 |  |  | 2020 |
Net income |  | $ | 3,584,529 |  |  | $ | 4,723,263 |
Weighted average common shares |  |  | 8,383,986 |  |  |  | 8,167,793 |
Effect of dilutive securities: |  |  |  |  |  |  |  |
Options to purchase common stock |  |  | 9,046 |  |  |  | 14,390 |
Diluted average common shares |  |  | 8,393,032 |  |  |  | 8,182,183 |
Earnings per share of common stock: |  |  |  |  |  |  |  |
Basic |  | $ | 0.43 |  |  | $ | 0.58 |
Diluted |  | $ | 0.43 |  |  | $ | 0.58 |

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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=124432515&loc=d3e3550-109257 + Details
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