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Note 5 - Revenue Recognition (Tables) | 3 Months Ended
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Dec. 31, 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, 2020 |  | $ | 3,683 |  |  | $ | 1,024 |  |  | $ | 4,707 |
New performance obligations |  |  | 3,476 |  |  |  | 245 |  |  |  | 3,721 |
Recognition of revenue as a result of satisfying performance obligations |  |  | (2,221 | ) |  |  | (439 | ) |  |  | (2,660 | )
Effect of exchange rate on deferred revenue |  |  | - |  |  |  | 21 |  |  |  | 21 |
Balance at December 31, 2020 |  | $ | 4,938 |  |  | $ | 851 |  |  | $ | 5,789 |
Less: non-current portion |  |  | - |  |  |  | (275 | ) |  |  | (275 | )
Current portion at December 31, 2020 |  | $ | 4,938 |  |  | $ | 576 |  |  | $ | 5,514 |

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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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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
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Period Type: | duration