Note 2 - Summary of Significant Accounting Policies - Summary of Contract Liabilities (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2024 |
Jun. 30, 2023 |
Jun. 30, 2024 |
Jun. 30, 2023 |
|
| Revenue recognized related to contract liabilities as of the beginning of the respective period | $ 13,000 | $ 234,000 | $ 0 | $ 82,000 |
| X | ||||||||||
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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