Note 3 - Revenues (Details Textual) Pure in Thousands, $ in Millions |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
Jun. 30, 2026
USD ($)
|
Jun. 30, 2025
USD ($)
|
Dec. 31, 2025 |
|
| Contract with Customer, Liability, Revenue Recognized | $ 1.0 | $ 1.1 | $ 2.4 | $ 2.8 | |
| Customer Concentration Risk [Member] | Revenue Benchmark [Member] | |||||
| Number of Major Customers | 0 | 0 | 0 | 0 | |
| Customer Concentration Risk [Member] | Accounts Receivable [Member] | |||||
| Number of Major Customers | 0 | 0 | |||