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 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Stock based compensation $ 514 $ 582 $ 938 $ 1,081
Selling and Marketing Expense [Member]        
Stock based compensation 76 72 140 141
Research and Development Expense [Member]        
Stock based compensation 131 104 213 183
General and Administrative Expense [Member]        
Stock based compensation $ 307 $ 406 $ 585 $ 757