Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Stock-based Compensation (Details Textual)

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Note 12 - Stock-based Compensation (Details Textual) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) 0    
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount $ 0    
Stock Issued During Period, Value, Employee Benefit Plan $ 237    
Defined Contribution Plan, Employer Matching Contribution, Percent of Match 50.00%    
Common Stock Contribution $ 29 $ 93  
Additional Paid-in Capital [Member]      
Stock Issued During Period, Shares, Employee Benefit Plan (in shares) 163   0
Stock Issued During Period, Value, Employee Benefit Plan $ 237    
Restricted Stock Units (RSUs) [Member]      
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount $ 1,007    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) 1 year 3 months 18 days