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Note 13 - Equity-based Compensation - Summary of Stock-based Compensation Expense Included in Results of Operations (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Stock-based compensation expense   $ 184
General and administrative $ 75  
Research and Development Expense [Member]    
Stock-based compensation expense 6 4
Selling and Marketing Expense [Member]    
Stock-based compensation expense 15 12
General and Administrative Expense [Member]    
Stock-based compensation expense   $ 168
General and administrative $ 54