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Note 4 - Revenue Recognition - Contract Asset and Contract Liabilities (Details) - USD ($) | 6 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Sep. 30, 2018
Balance | $ 736,054 |
New performance obligations | 1,553,032 |
Recognition of revenue as a result of satisfying performance obligations | (940,232) |
Balance | 1,348,854 |
Less: non-current portion | (146,043) |
Current portion | 1,202,811 |
Customer Deposits [Member] |  |
Balance | 199,596 |
New performance obligations | 951,719 |
Recognition of revenue as a result of satisfying performance obligations | (418,798) |
Balance | 732,517 |
Less: non-current portion |  |
Current portion | 732,517 | $ 199,596
Deferred Revenue [Member] |  |
Balance | 523,021 |
New performance obligations | 601,313 |
Recognition of revenue as a result of satisfying performance obligations | (521,434) |
Balance | 602,900 |
Less: non-current portion | (146,043) | (76,372)
Current portion | 456,857 | $ 460,086
Prepaid Maintenance Agreement [Member] |  |
Balance | 93,750 |
New prepaid maintenance agreements |  |
Recognition of expense as a result of performing services | (93,750) |
Balance |  |

X
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X
- Definition Amount of increase in obligation to transfer good or service to customer for which consideration from customer has been received or is due, from new contract. + References No definition available. + Details
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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130533-203044 + Details
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