v3.25.2
Note 6 - Segment Reporting (Details Textual)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2024
Number of Reportable Segments     2    
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | UNITED STATES          
Concentration Risk, Percentage 80.00% 78.00% 79.00% 77.00%  
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 $ 1,696 $ 363 $ 3,188 $ 2,533  
Class Action Lawsuits [Member]          
Legal Fees 2,540   3,883    
Government Inquiries and Other Matters [Member]          
Legal Fees $ 675   $ 1,591