Note 10 - Balance Sheet Detail - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands  | 
Jun. 30, 2024  | 
Dec. 31, 2023  | 
|---|---|---|
| Total amount due from customer | $ 1,576 | $ 1,637 | 
| Less: unamortized discount | (15) | (12) | 
| Less: current portion included in accounts receivable | (809) | (828) | 
| Accounts Receivable, after Allowance for Credit Loss, Noncurrent | $ 752 | $ 797 | 
| X | ||||||||||
- Definition Represents the current portion of noncurrent accounts receivable. No definition available. 
  | 
| X | ||||||||||
- Definition Represents the amount of discount on accounts receivable classified as noncurrent. No definition available. 
  | 
| X | ||||||||||
- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
  | 
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as noncurrent. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
  |