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Note 13 - Equity-based Compensation (Details Textual) $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | ---
May 30, 2024 | [1] | Mar. 31, 2023 shares | Mar. 31, 2017 shares | Oct. 31, 2007 | Sep. 30, 2024 USD ($) shares | Sep. 30, 2023 USD ($) shares | Sep. 30, 2024 USD ($) shares | Sep. 30, 2023 USD ($) shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |  |  |  |  | 0 | 0 | 0 | 0
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ |  |  |  |  | $ 100 |  | $ 100 |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  |  |  |  |  | 1 year 3 months 18 days |
Share-Based Payment Arrangement, Expense | $ |  |  |  |  | $ 22 | $ 62 | $ 137 | $ 201
Share-Based Payment Arrangement, Nonemployee [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  |  |  | 36,000 |  | 36,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  | 0 | 0 | 0 |
Employees and Directors [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  |  |  |  | 0 | 6,150
Employees and Directors [Member] | Share-Based Payment Arrangement, Nonemployee [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  |  |  | 5,148
Reverse Stock Split [Member] |  |  |  |  |  |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio | 35 |  |  |  | 35 |  |  |
Restricted Stock [Member] | Share-Based Payment Arrangement, Nonemployee [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  | 0 |  |
Share-Based Payment Arrangement, Expense | $ |  |  |  |  | $ 0 | $ 3 | $ 13 | $ 7
Restricted Stock [Member] | Share-Based Payment Arrangement, Employee [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  | 0 |  |  |
Restricted Stock [Member] | Employees and Directors [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  |  | 5,148,000 |
Share-Based Payment Arrangement, Expense | $ |  |  |  |  | $ 22 | $ 59 | $ 124 | $ 194
Post-split Amount [Member] | Share-Based Payment Arrangement, Nonemployee [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) |  |  |  |  |  |  |  | 1,032
Post-split Amount [Member] | Employees and Directors [Member] | Share-Based Payment Arrangement, Nonemployee [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  |  |  |  |  | 150
The 2007 Omnibus Incentive Plan [Member] | Maximum [Member] | Incentive Stock Options (ISOs) [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  |  |  | 10 years |  |  |  |
The 2017 Omnibus Incentive Plan [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) |  |  | 66,243 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Annual Increase in Shares Authorized, Percentage of Outstanding Common Stock |  |  | 4.00% |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) |  | 12,219 |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) |  |  |  |  | 13,650 |  | 13,650 |
The 2017 Omnibus Incentive Plan [Member] | Incentive Stock Options (ISOs) [Member] |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percentage of Stock Owned by Shareholder, Minimum |  |  | 10.00% |  |  |  |  |
The 2017 Omnibus Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 4 years |  |  |  |  |
The 2017 Omnibus Incentive Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  |  | 10 years |  |  |  |  |
The 2017 Omnibus Incentive Plan [Member] | Maximum [Member] | Incentive Stock Options (ISOs) [Member] | Shareholder of More Than 10% [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  |  | 5 years |  |  |  |  |
The 2017 Omnibus Incentive Plan [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent |  |  | 100.00% |  |  |  |  |
The 2017 Omnibus Incentive Plan [Member] | Minimum [Member] | Incentive Stock Options (ISOs) [Member] | Shareholder of More Than 10% [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent |  |  | 110.00% |  |  |  |  |
[1] | After giving retroactive effect to the 1-for-35 Reverse Stock Split that became effective May 30, 2024.

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