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Note 12 - Common Stock and Stock-based Compensation Plans (Details Textual) - USD ($) |  | 9 Months Ended
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Feb. 10, 2025 | Sep. 30, 2025
Chief Financial Officer [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Addtional Shares Issuable, Performance Goals Exceeded | 7,268 |
Chief Operating Officer [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Addtional Shares Issuable, Performance Goals Exceeded | 6,460 |
Chief Commercial Officer [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Addtional Shares Issuable, Performance Goals Exceeded | 6,460 |
Share-Based Payment Arrangement, Option [Member] |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  | $ 174,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition |  | 1 year 7 months 6 days
Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Employee [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period |  | 3 years
Short-Term Executive PSUs [Member] | Chief Executive Officer [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Addtional Shares Issuable, Performance Goals Exceeded, Percentage | 100.00% |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Addtional Shares Issuable, Performance Goals Exceeded | 51,918 |
Short-Term Executive PSUs [Member] | CFO, COO, and CCO [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Addtional Shares Issuable, Performance Goals Exceeded, Percentage | 70.00% |
RSUs and PSUs [Member] |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  | $ 28,043
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition |  | 1 year 7 months 6 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period |  | 908,517
Share-Based Payment Arrangement, Tranche One [Member] | Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Nonemployee [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period |  | 1 year
Vesting on February 16, 2025 [Member] | Restricted Stock Units (RSUs) [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 33.40% |
Vesting on February 16, 2026 [Member] | Restricted Stock Units (RSUs) [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 33.30% |
Vesting on February 16, 2027 [Member] | Restricted Stock Units (RSUs) [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 33.30% |
Goals One [Member] | Short-Term Executive PSUs [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Threshold, Percentage | 90.00% |
Goals One [Member] | Short-Term Executive PSUs [Member] | Full Vesting Based on The Achievement of 2022 License Target [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 50.00% |
Goals One [Member] | Short-Term Executive PSUs [Member] | Increase in Eligible PSUs, Percent [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Conditional Increase in Shares, Percentage | 7.00% |
Goals One [Member] | Short-Term Executive PSUs [Member] | Chief Executive Officer [Member] | Increase in Eligible PSUs, Percent [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Conditional Increase in Shares, Percentage | 10.00% |
Goals One [Member] | Maximum [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Achievement In Excess of 90 Percent [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 99.00% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Threshold, Percentage | 99.00% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Actual Performance Results, in Excess of Performance Threshold, Percentage | 110.00% |
Goals One [Member] | Minimum [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Achievement In Excess of 90 Percent [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 91.00% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Actual Performance Results, in Excess of Performance Threshold, Percentage | 1.00% |
Goals Two [Member] | Short-Term Executive PSUs [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 25.00% |
Goals Two [Member] | Short-Term Executive PSUs [Member] | Increase in Eligible PSUs, Percent [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Conditional Increase in Shares, Percentage | 7.00% |
Goals Two [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return Being at Least 90 Percent of S&P500 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 25.00% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Threshold, Percentage | 90.00% |
Goals Two [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return In Excess of 100 Percent of S&P500 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Threshold, Percentage | 100.00% |
Goals Two [Member] | Short-Term Executive PSUs [Member] | Chief Executive Officer [Member] | Increase in Eligible PSUs, Percent [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Conditional Increase in Shares, Percentage | 10.00% |
Goals Two [Member] | Maximum [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return Being at Least 90 Percent of S&P500 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 99.00% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Threshold, Percentage | 99.00% |
Goals Two [Member] | Maximum [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return In Excess of 100 Percent of S&P500 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Actual Performance Results, in Excess of Performance Threshold, Percentage | 110.00% |
Goals Two [Member] | Minimum [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return Being at Least 90 Percent of S&P500 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 91.00% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Threshold, Percentage | 90.00% |
Goals Two [Member] | Minimum [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return In Excess of 100 Percent of S&P500 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Actual Performance Results, in Excess of Performance Threshold, Percentage | 1.00% |
Goals Three [Member] | Short-Term Executive PSUs [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 25.00% |
Goals Three [Member] | Short-Term Executive PSUs [Member] | Increase in Eligible PSUs, Percent [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Conditional Increase in Shares, Percentage | 7.00% |
Goals Three [Member] | Short-Term Executive PSUs [Member] | Full Vesting Based on The Achievement of Positive Shareholder Return [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 25.00% |
Goals Three [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return Being at Least 90 Percent of Russel 2000 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Threshold, Percentage | 90.00% |
Goals Three [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return In Excess of 100 Percent of Russel 2000 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Threshold, Percentage | 100.00% |
Goals Three [Member] | Short-Term Executive PSUs [Member] | Chief Executive Officer [Member] | Increase in Eligible PSUs, Percent [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Conditional Increase in Shares, Percentage | 10.00% |
Goals Three [Member] | Maximum [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return Being at Least 90 Percent of Russel 2000 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 99.00% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Threshold, Percentage | 99.00% |
Goals Three [Member] | Maximum [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return In Excess of 100 Percent of Russel 2000 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Actual Performance Results, in Excess of Performance Threshold, Percentage | 110.00% |
Goals Three [Member] | Minimum [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return Being at Least 90 Percent of Russel 2000 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 91.00% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Threshold, Percentage | 90.00% |
Goals Three [Member] | Minimum [Member] | Short-Term Executive PSUs [Member] | Vesting Based on Actual Return In Excess of 100 Percent of Russel 2000 Index [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Actual Performance Results, in Excess of Performance Threshold, Percentage | 1.00% |
Vesting On February 14, 2026 [Member] | Short-Term Executive PSUs [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 33.40% |
Vesting On February 14, 2027 [Member] | Short-Term Executive PSUs [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 33.30% |
Vesting On February 14, 2028 [Member] | Short-Term Executive PSUs [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 33.30% |
The2011 Stock Incentive Plan [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Remaining Vesting Period |  | 36 months
The2011 Stock Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Chief Executive Officer [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period | 34,612 |
The2011 Stock Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Chief Financial Officer [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period | 15,575 |
The2011 Stock Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Chief Operating Officer [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period | 13,844 |
The2011 Stock Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Chief Commercial Officer [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period | 13,844 |
The2011 Stock Incentive Plan [Member] | Performance Share Units [Member] | Chief Executive Officer [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period | 51,918 |
The2011 Stock Incentive Plan [Member] | Performance Share Units [Member] | Chief Financial Officer [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period | 10,383 |
The2011 Stock Incentive Plan [Member] | Performance Share Units [Member] | Chief Operating Officer [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period | 9,229 |
The2011 Stock Incentive Plan [Member] | Performance Share Units [Member] | Chief Commercial Officer [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period | 9,229 |
The2011 Stock Incentive Plan [Member] | Maximum [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period |  | 4 years
The2011 Stock Incentive Plan [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  | 25.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period |  | 1 year
The2011 Stock Incentive Plan [Member] | Vesting After the First Anniversary Grant Date [Member] | Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Nonemployee [Member] |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage | 50.00% |

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