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Note 4 - Revenue Recognition (Tables) | 3 Months Ended
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Dec. 31, 2018
Notes Tables |
Contract with Customer, Asset and Liability [Table Text Block] |
|  | Prepaid maintenance |
|  | agreement |
Balance at September 30, 2018 |  | $ | 93,750 |
New prepaid maintenance agreements |  |  | - |
Recognition of expense as a result of performing services |  |  | (46,875 | )
Balance at December 31, 2018 |  | $ | 46,875 |
Less: non-current portion |  |  | - |
Current portion at December 31, 2018 |  | $ | 46,875 |
|  | Customer deposits |  |  | Deferred revenue |  |  | Total contract liabilities |
Balance at September 30, 2018 |  | $ | 199,596 |  |  | $ | 536,458 |  |  | $ | 736,054 |
New performance obligations |  |  | 137,431 |  |  |  | 159,907 |  |  |  | 297,338 |
Recognition of revenue as a result of satisfying performance obligations |  |  | (153,693 | ) |  |  | (270,461 | ) |  |  | (424,154 | )
Balance at December 31, 2018 |  | $ | 183,334 |  |  | $ | 425,904 |  |  | $ | 609,238 |
Less: non-current portion |  |  | - |  |  |  | (83,255 | ) |  |  | (83,255 | )
Current portion at December 31, 2018 |  | $ | 183,334 |  |  | $ | 342,649 |  |  | $ | 525,983 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045 + Details
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