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Note 17 - Stock-based Compensation (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Sep. 07, 2017
Aug. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum 10.00%        
Share Based Compensation Arrangement By Share Based Payment Award Award Term (Year) 10 years        
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period (in shares)     0    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)     0 20,000 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)       $ 2.3  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)     (0) (0) 20,000
Share-Based Payment Arrangement, Expense     $ 0 $ 46 $ 0
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount     $ 0 0  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)     4,310,167    
Restricted Stock [Member]          
Share-Based Payment Arrangement, Expense, Tax Benefit     $ 0 $ 19  
New Members of Board of Directors [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)   20,000