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Note 14 - Commitments and Contingencies (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 04, 2023 | Oct. 02, 2020 | Dec. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Increase (Decrease) in Other Employee-Related Liabilities |  |  | $ 40 | $ 548 |  |  |
Share Price |  |  | $ 2.03 |  |  |  |
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock |  |  | $ 527 |  |  |  |
Additional Paid-in Capital [Member] |  |  |  |  |  |  |
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock |  |  | $ 527 |  |  |  |
Assets Acquisition of Amika Mobile Corporation [Member] |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares, Each Anniversaries |  | 191,267 |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) |  | 573,801 | 69,564 |  | 69,564 |  |
Share Price |  | $ 5.98 |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable |  | $ 3,431 |  |  |  |  |
Assets Acquisition of Amika Mobile Corporation [Member] | Former Owner of Amika Mobile [Member] |  |  |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions |  |  | 69,564 |  | 69,564 | 69,564 | 365,109
Evertel Technologies, LLC [Member] |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | 986,486 |  |  |  |  |  |
Share Price | $ 1.95 |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High | $ 1,050 |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability | $ 890 |  | $ 926 |  |  |  |
Evertel Technologies, LLC [Member] | Acquisition Holdback Liability [Member] |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability |  |  | $ 235 |  |  |  |
Evertel Technologies, LLC [Member] | Agreement to Issue Stock [Member] |  |  |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | 270,270 |  |  |  |  |  |
Share Price | $ 1.95 |  |  |  |  |  |
Evertel Technologies, LLC [Member] | Agreement to Issue Stock [Member] | Additional Paid-in Capital [Member] |  |  |  |  |  |  |
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock | $ 527 |  |  |  |  |  |

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