Note 4 - Concentrations of Business and Credit Risk (Details Textual) Pure in Thousands, $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
|
Jun. 30, 2025
USD ($)
|
Jun. 30, 2024 |
Jun. 30, 2025
USD ($)
|
Jun. 30, 2024 |
Dec. 31, 2024
USD ($)
|
|
| Cash, Uninsured Amount | $ 0 | $ 0 | $ 140 | ||
| Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | |||||
| Number of Major Customers | 0 | 0 | 0 | 0 | |
| Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member] | |||||
| Number of Major Customers | 0 | 0 | 0 | 0 | |