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Note 4 - Revenue Recognition - Contract Asset and Contract Liabilities (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019
Balance | $ 6,122,498 |
New performance obligations | 1,503,857 |
Recognition of revenue as a result of satisfying performance obligations | (2,328,682) |
Effect of exchange rate on deferred revenue | 9,136 |
Balance | 5,306,809 |
Less: non-current portion | (490,795) |
Current portion | 4,816,014 |
Customer Deposits [Member] |  |
Balance | 5,063,091 |
New performance obligations | 1,473,433 |
Recognition of revenue as a result of satisfying performance obligations | (2,089,763) |
Effect of exchange rate on deferred revenue |  |
Balance | 4,446,761 |
Less: non-current portion |  |
Current portion | 4,446,761 | $ 5,063,091
Deferred Revenue [Member] |  |
Balance | 1,059,407 |
New performance obligations | 30,424 |
Recognition of revenue as a result of satisfying performance obligations | (238,919) |
Effect of exchange rate on deferred revenue | 9,136 |
Balance | 860,048 |
Less: non-current portion | (490,795) | (550,885)
Current portion | $ 369,253 | $ 508,522

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