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Note 4 - Revenue Recognition - Contract Asset and Contract Liabilities (Details) - USD ($) | 9 Months Ended |
--- | --- | ---
Jun. 30, 2020 | Sep. 30, 2019
Balance | $ 6,122,498 |
New performance obligations | 7,015,397 |
Recognition of revenue as a result of satisfying performance obligations | (6,467,136) |
Effect of exchange rate on deferred revenue | 11,132 |
Balance | 6,681,891 |
Less: non-current portion | (383,413) |
Current portion | 6,298,478 |
Customer Deposits [Member] |  |
Balance | 5,063,091 |
New performance obligations | 6,469,112 |
Recognition of revenue as a result of satisfying performance obligations | (5,765,395) |
Effect of exchange rate on deferred revenue |  |
Balance | 5,766,808 |
Less: non-current portion |  |
Current portion | 5,766,808 | $ 5,063,091
Deferred Revenue [Member] |  |
Balance | 1,059,407 |
New performance obligations | 546,285 |
Recognition of revenue as a result of satisfying performance obligations | (701,741) |
Effect of exchange rate on deferred revenue | 11,132 |
Balance | 915,083 |
Less: non-current portion | (383,413) | (550,885)
Current portion | $ 531,670 | $ 508,522

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