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v3.25.3

Note 7 - Segment Reporting (Details Textual) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024
Number of Reportable Segments |  |  | 2 |  |
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | UNITED STATES |  |  |  |  |
Concentration Risk, Percentage | 80.00% | 83.00% | 79.00% | 79.00% |
Geographic Concentration Risk [Member] | Long-lived Assets [Member] | UNITED STATES |  |  |  |  |
Concentration Risk, Percentage |  |  | 74.00% |  | 76.00%
Clean Energy Product [Member] |  |  |  |  |
Provision for Product Charges |  | $ 0 |  | $ 365 |
Certain Patent Lawsuits [Member] |  |  |  |  |
Legal Fees | $ 2,736 | $ 2,382 | $ 5,923 | $ 4,915 |
Multi-district Class Action Lawsuit [Member] |  |  |  |  |
Legal Fees |  |  | 15,000 |  |
Class Action Lawsuits [Member] |  |  |  |  |
Legal Fees | 17,759 |  | 21,643 |  |
Government Inquiries and Other Matters [Member] |  |  |  |  |
Legal Fees | $ 2,713 |  | $ 4,304 |  |

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