Note 7 - Revenue Recognition (Details Textual) - USD ($) |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Sep. 30, 2025 |
Sep. 30, 2024 |
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| Accounts and Financing Receivable, after Allowance for Credit Loss | $ 4,657,001 | $ 4,657,001 | $ 6,455,910 | $ 4,428,535 | ||
| Unbilled Receivables, Current | 0 | 495,969 | ||||
| Accounts Receivable, Allowance for Credit Loss, Including Credit Memos, Current | 876,645 | 876,645 | 596,059 | 432,904 | ||
| Allowance for Credit Memos | 20,000 | 20,000 | 10,000 | 70,000 | ||
| Accounts Receivable, Allowance for Credit Loss, Writeoff | 62 | $ 44,536 | 339 | $ 270,054 | ||
| Contract with Customer, Liability | $ 32,000 | $ 32,000 | $ 0 | $ 0 | ||
| Revenue Benchmark [Member] | Product Concentration Risk [Member] | Monitoring and Other Related Services [Member] | ||||||
| Concentration Risk, Percentage | 94.00% | 89.00% | 94.00% | 93.00% | ||
| X | ||||||||||
- Definition The accounts receivable allowance for credit loss, including credit memos, classified as current. No definition available.
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- Definition The price reduction in price charged by a seller, due to a problem with the sold product or service. No definition available.
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- Definition Amount, after allowance for credit loss, of accounts and financing receivable. Includes, but is not limited to, notes and loan receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. No definition available.
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- Details
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- Details
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- Details
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