Quarterly report pursuant to Section 13 or 15(d)

Note 13 - Stock-based Compensation - Stock Based Compensation Expense (Details)

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Note 13 - Stock-based Compensation - Stock Based Compensation Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Stock based compensation $ 441 $ 537 $ 1,379 $ 1,618
Selling and Marketing Expense [Member]        
Stock based compensation 69 61 209 202
Research and Development Expense [Member]        
Stock based compensation 107 90 320 273
General and Administrative Expense [Member]        
Stock based compensation $ 265 $ 386 $ 850 $ 1,143