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Note 16 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Oct. 02, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2021 | Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares) |  | 15,000 | 25,899 |  |
Gross Proceeds from Stock Options Exercised |  | $ 46 | $ 54 |  |
Stock Repurchased During Period, Value |  | $ 441 |  |  |
Common Stock, Dividends, Per Share, Declared (in dollars per share) |  | $ 0 | $ 0 |  |
Share Buyback Program [Member] |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  | $ 5,000
Stock Repurchased and Retired During Period, Shares (in shares) |  | 116,868 | 0 |  |
Stock Repurchased During Period, Value |  | $ 441 |  |  |
Assets Acquisition of Amika Mobile Corporation [Member] |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares, Each Anniversaries (in shares) | 191,267 |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | 573,801 | 139,128 |  |  |
Business Acquisition, Share Price (in dollars per share) | $ 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 (in shares) |  | 69,564 |  | 365,109 |

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