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Note 5 - Revenue Recognition - Contract Asset and Contract Liabilities (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Sep. 30, 2023
Balance as of September 30, 2022 | $ 4,020 |
New performance obligations | 6,199 |
Recognition of revenue as a result of satisfying performance obligations | (5,134) |
Effect of exchange rate on deferred revenue | (2) |
Balance as of March 31, 2023 | 5,083 |
Less: non-current portion | (445) | $ (551)
Current portion as of March 31, 2023 | 4,638 |
Customer Deposits [Member] |  |
Balance as of September 30, 2022 | 766 |
New performance obligations | 2,272 |
Recognition of revenue as a result of satisfying performance obligations | (2,116) |
Effect of exchange rate on deferred revenue | 0 |
Balance as of March 31, 2023 | 922 |
Less: non-current portion | 0 |
Current portion as of March 31, 2023 | 922 |
Deferred Revenue [Member] |  |
Balance as of September 30, 2022 | 3,254 |
New performance obligations | 3,927 |
Recognition of revenue as a result of satisfying performance obligations | (3,018) |
Effect of exchange rate on deferred revenue | (2) |
Balance as of March 31, 2023 | 4,161 |
Less: non-current portion | (445) |
Current portion as of March 31, 2023 | $ 3,716 |

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-2 + Details
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