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Note 14 - Commitments and Contingencies (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2024 | Oct. 04, 2023 | Oct. 02, 2020 | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Increase (Decrease) in Other Employee-Related Liabilities |  |  |  |  |  | $ 81 | $ 589 |  |  |
Share Price | $ 2.37 |  |  | $ 2.37 |  | $ 2.37 |  |  |  |
Payment for Contingent Consideration Liability, Financing Activities |  |  |  |  |  | $ 219 | (0) |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  |  |  |  |  | $ 44 | $ 0 |  |  |
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock |  |  |  | $ 158 | $ 527 |  |  |  |  |
Additional Paid-in Capital [Member] |  |  |  |  |  |  |  |  |  |
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock |  |  |  | 158 | $ 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 Settled |  |  |  |  |  | $ 874 |  |  |  |
Payment for Contingent Consideration Liability, Financing Activities |  |  |  |  |  | 219 |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability |  |  |  |  |  | 44 |  |  |  |
Business Combination, Contingent Consideration, Liability | $ 60 | 890 |  | 60 |  | $ 60 |  |  |  |
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock |  |  |  | 158 |  |  |  |  |  |
Evertel Technologies, LLC [Member] | Additional Paid-in Capital [Member] |  |  |  |  |  |  |  |  |  |
Increase in Additional Paid-in Capital, Obligation to Issue Common Stock |  | $ 527 |  | 158 |  |  |  |  |  |
Evertel Technologies, LLC [Member] | Contingent Consideration Liability [Member] |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions | 236,343 |  |  |  |  | 236,343 |  |  |  |
Evertel Technologies, LLC [Member] | Acquisition Holdback Liability [Member] |  |  |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability | $ 240 |  |  | $ 240 |  | $ 240 |  |  |  |
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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