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Note 4 - Business Combinations (Details Textual) - USD ($) |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 04, 2023 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024
Share Price |  |  | $ 2.12 |  |  |  |  |
Stock Issued During Period, Value, Acquisitions |  |  |  | $ 1,924,000 |  |  |  |
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock |  |  | $ 158,000 | 527,000 |  |  |  |
Payment for Contingent Consideration Liability, Financing Activities |  |  |  |  |  | $ 219,000 | $ (0) |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  |  |  |  |  | (16,000) | $ 0 |
Contingent Consideration Liability [Member] |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Acquisitions |  | $ 0 | 656,000 |  |  |  |  |
Additional Paid-in Capital [Member] |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Acquisitions |  |  |  | 1,924,000 |  |  |  |
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock |  |  | 158,000 | 527,000 |  |  |  |
Additional Paid-in Capital [Member] | Contingent Consideration Liability [Member] |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Acquisitions |  |  | 656,000 |  |  |  |  |
Evertel Technologies, LLC [Member] |  |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | 986,486 |  |  |  |  |  |  |
Share Price | $ 1.95 |  |  |  |  |  |  |
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock |  | 158,000 |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability | $ 890,000 | 0 |  |  |  | 0 |  | $ 0
Business Combination, Consideration Transferred, Working Capital Adjustment | $ 15,000 |  | 15,000 |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  | 62,000 | $ 12,000 | $ 39,000 |  |  | $ 113,000
Finite-Lived Intangible Asset, Useful Life | 6 years 9 months 18 days |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability Settled |  |  |  |  |  | 874,000 |  |
Payment for Contingent Consideration Liability, Financing Activities |  |  |  |  |  | 219,000 |  |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  |  |  |  |  | 16,000 |  |
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual |  | 291,000 |  |  |  | 706,000 |  |
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual |  | $ 72,000 |  |  |  | $ 504,000 |  |
Evertel Technologies, LLC [Member] | Holdback Liability [Member] |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability | $ 230,000 |  |  |  |  |  |  |
Evertel Technologies, LLC [Member] | Contingent Consideration Liability [Member] |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions |  |  |  |  |  | 236,343 |  |
Evertel Technologies, LLC [Member] | Additional Paid-in Capital [Member] |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Acquisitions | 1,924 |  |  |  |  |  |  |
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock | $ 527,000 |  | $ 158,000 |  |  |  |  |
Evertel Technologies, LLC [Member] | Additional Paid-in Capital [Member] | Contingent Consideration Liability [Member] |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Acquisitions |  |  |  |  |  | $ 656,000 |  |

X
- Definition Amount of working capital adjustment on consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References No definition available. + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479405/805-10-25-23 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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