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Note 4 - Revenue Recognition (Tables) | 12 Months Ended
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Sep. 30, 2020
Notes Tables |
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] |
|  | Customer deposits |  |  | Deferred revenue |  |  | Total contract liabilities |
Balance at September 30, 2019 |  | $ | 5,063 |  |  | $ | 1,060 |  |  | $ | 6,123 |
New performance obligations |  |  | 7,089 |  |  |  | 962 |  |  |  | 8,051 |
Recognition of revenue as a result of satisfying performance obligations |  |  | (8,469 | ) |  |  | (1,022 | ) |  |  | (9,491 | )
Effect of exchange rate on deferred revenue |  |  | - |  |  |  | 24 |  |  |  | 24 |
Balance at September 30, 2020 |  | $ | 3,683 |  |  | $ | 1,024 |  |  | $ | 4,707 |
Less: non-current portion |  |  | - |  |  |  | (293 | ) |  |  | (293 | )
Current portion at September 30, 2020 |  | $ | 3,683 |  |  | $ | 731 |  |  | $ | 4,414 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration