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Note 17 - Net Income Per Share (Tables) | 6 Months Ended
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Mar. 31, 2020
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months Ended |  |  | Six months Ended |
|  | March 31, |  |  | March 31, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Net income |  | $ | 301,575 |  |  | $ | 1,178,850 |  |  | $ | 921,902 |  |  | $ | 2,224,790 |
Basic income per share |  | $ | 0.01 |  |  | $ | 0.04 |  |  | $ | 0.03 |  |  | $ | 0.07 |
Diluted income per share |  | $ | 0.01 |  |  | $ | 0.04 |  |  | $ | 0.03 |  |  | $ | 0.07 |
Weighted average shares outstanding - basic |  |  | 33,094,596 |  |  |  | 32,584,952 |  |  |  | 33,036,786 |  |  |  | 32,738,871 |
Assumed exercise of dilutive options |  |  | 638,023 |  |  |  | 492,303 |  |  |  | 672,046 |  |  |  | 533,293 |
Weighted average shares outstanding - diluted |  |  | 33,732,619 |  |  |  | 33,077,255 |  |  |  | 33,708,832 |  |  |  | 33,272,164 |
Potentially diluted securities outstanding at period end excluded from diluted computation as the inclusion would have been antidilutive: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options |  |  | 1,602,477 |  |  |  | 976,750 |  |  |  | 1,602,477 |  |  |  | 976,750 |

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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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