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Note 16 - Net Income (Loss) Per Share (Tables) | 6 Months Ended
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Mar. 31, 2019
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three months ended |  |  | Six months ended |
|  | 3/31/2019 |  |  | 3/31/2018 |  |  | 3/31/2019 |  |  | 3/31/2018 |
Net income (loss) |  |  | 1,178,850 |  |  |  | 460,908 |  |  |  | 2,224,790 |  |  |  | (1,222,344 | )
Basic income (loss) per share |  | $ | 0.04 |  |  | $ | 0.01 |  |  | $ | 0.07 |  |  | $ | (0.04 | )
Diluted income (loss) per share |  | $ | 0.04 |  |  | $ | 0.01 |  |  | $ | 0.07 |  |  | $ | (0.04 | )
Weighted average shares outstanding - basic |  |  | 32,584,952 |  |  |  | 32,275,647 |  |  |  | 32,738,871 |  |  |  | 32,212,286 |
Assumed exercise of dilutive options |  |  | 492,303 |  |  |  | 1,023,559 |  |  |  | 533,293 |  |  |  | - |
Weighted average shares outstanding - diluted |  |  | 33,077,255 |  |  |  | 33,299,206 |  |  |  | 33,272,164 |  |  |  | 32,212,286 |
Potentially diluted securities outstanding at period end excluded from diluted computation as the inclusion would have been antidilutive: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options |  |  | 976,750 |  |  |  | 1,766,250 |  |  |  | 976,750 |  |  |  | 2,706,567 |
RSU |  |  | - |  |  |  | 218,330 |  |  |  | - |  |  |  | 218,330 |
Total |  |  | 976,750 |  |  |  | 1,984,580 |  |  |  | 976,750 |  |  |  | 2,924,897 |

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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://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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