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Note F - Acquisition (Tables) | 12 Months Ended
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Sep. 30, 2019
Notes Tables |
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] |
|  | February 20, 2018
Inventories |  | $ | 2,781,000 |
Property, plant and equipment |  |  | 58,000 |
Trademarks |  |  | 563,000 |
Customer relationships |  |  | 3,742,000 |
Product certification |  |  | 1,068,000 |
Goodwill |  |  | 2,138,000 |
Total Assets |  | $ | 10,350,000 |
Business Acquisition, Pro Forma Information [Table Text Block] |
|  | Pro Forma |  | Pro Forma
|  | Year Ended |  | Year Ended
|  | September 30, 2018 |  | September 30, 2017
|  | (unaudited) |  | (unaudited)
Net sales |  | $ | 80,958,789 |  |  | $ | 89,672,074 |
Income from operations |  | $ | 5,554,766 |  |  | $ | 8,174,841 |
Net income |  | $ | 4,794,757 |  |  | $ | 5,809,018 |
Net income per share: |  |  |  |  |  |  |  |
Basic |  | $ | 0.36 |  |  | $ | 0.43 |
Diluted |  | $ | 0.36 |  |  | $ | 0.43 |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Tabular disclosure of the amounts recognized as of the acquisition date for each major class of assets acquired and liabilities assumed. May include but not limited to the following: (a) acquired receivables; (b) contingencies recognized at the acquisition date; and (c) the fair value of noncontrolling interests in the acquiree. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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