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Note 14 - Commitments and Contingencies (Details Textual) $ / shares in Units, $ in Thousands, $ in Millions |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 02, 2020 USD ($) $ / shares | Oct. 02, 2020 CAD ($) | Oct. 02, 2020 USD ($) $ / shares shares | Oct. 02, 2020 CAD ($) shares | Mar. 31, 2022 USD ($) $ / shares shares | Mar. 31, 2021 USD ($) | Sep. 30, 2021 shares
Increase (Decrease) in Other Employee-Related Liabilities | $ |  |  |  |  | $ 845 | $ 898 |
Share Price (in dollars per share) | $ / shares | $ 5.98 |  | $ 5.98 |  | $ 2.75 |  |
Assets Acquisition of Amika Mobile Corporation [Member] |  |  |  |  |  |  |
Asset Purchase Agreement, Deduction From Liability | $ 799 | $ 1 | $ 799 | $ 1 |  |  |
Asset Purchase Agreement, Deduction, Term (Year) |  |  | 3 years | 3 years |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares, Each Anniversaries (in shares) |  |  | 191,267 | 191,267 |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) |  |  | 573,801 | 573,801 | 139,128 |  |
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 (in shares) |  |  |  |  | 69,564 |  | 365,109

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