Note 2 - Summary of Significant Accounting Policies Noncash Stock-based Compensation Expense (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Share-Based Payment Arrangement, Expense | $ 476,000 | $ 298,000 | $ 759,000 | $ 630,000 |
| Selling and Marketing Expense [Member] | ||||
| Share-Based Payment Arrangement, Expense | 163,000 | 132,000 | 251,000 | 254,000 |
| Research and Development Expense [Member] | ||||
| Share-Based Payment Arrangement, Expense | 8,000 | 6,000 | 13,000 | 17,000 |
| General and Administrative Expense [Member] | ||||
| Share-Based Payment Arrangement, Expense | $ 305,000 | $ 160,000 | $ 495,000 | $ 359,000 |
| X | ||||||||||
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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