Note 2 - Summary of Significant Accounting Policies Noncash Stock-based Compensation Expense (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Share-Based Payment Arrangement, Expense | $ 955,000 | $ 476,000 | $ 2,070,000 | $ 759,000 |
| Selling, Marketing and Advertising Expense [Member] | ||||
| Share-Based Payment Arrangement, Expense | 362,000 | 163,000 | 758,000 | 251,000 |
| Engineering, Technology and Development Expense [Member] | ||||
| Share-Based Payment Arrangement, Expense | 72,000 | 8,000 | 150,000 | 13,000 |
| General and Administrative [Member] | ||||
| Share-Based Payment Arrangement, Expense | $ 521,000 | $ 305,000 | $ 1,162,000 | $ 495,000 |