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Note 18 - Segment Information - Segment Disclosures (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2019
Revenues | $ 8,781,702 | $ 10,177,559 |
Operating Income | 696,657 | 1,289,875 |
Depreciation and amortization | 208,537 | 201,267 |
Interest expense | 172,390 | 283,003 |
Long-lived assets | 5,715,931 |  | $ 5,750,890
Total assets | 52,647,396 |  | 47,119,983
Intersegment Eliminations [Member] |  |  |
Revenues | 384,995 | 186,972 |
Hardware [Member] |  |  |
Revenues | 8,362,042 | 9,656,702 |
Operating Income | 696,070 | 1,302,646 |
Depreciation and amortization | 131,167 | 124,301 |
Interest expense | 172,390 | 283,003 |
Long-lived assets | 2,226,938 |  | 2,283,344
Total assets | 47,904,766 |  | 42,470,356
Hardware [Member] | Intersegment Eliminations [Member] |  |  |
Revenues |  |  |
Software [Member] |  |  |
Revenues | 419,660 | 520,857 |
Operating Income | 587 | (12,771) |
Depreciation and amortization | 77,370 | 76,966 |
Interest expense |  |  |
Long-lived assets | 3,488,993 |  | 3,467,546
Total assets | 4,742,630 |  | $ 4,649,627
Software [Member] | Intersegment Eliminations [Member] |  |  |
Revenues | $ 384,995 | $ 186,972 |

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