Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Stock-based Incentive Plans (Details Textual)

v3.24.3
Note 8 - Stock-based Incentive Plans (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Feb. 07, 2023
Mar. 15, 2021
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Restricted Stock [Member]              
Share-Based Payment Arrangement, Expense     $ 34,000 $ 38,000 $ 109,000 $ 123,000  
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount     $ 167,000   $ 167,000    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)     8 months 12 days        
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)         22,768    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares)     35,854   35,854   62,320
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)         3,698    
Equity Incentive Plan 2016 [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)     2,500,000   2,500,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)     1,129,047   1,129,047    
The Phantom Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)   10 years          
The Phantom Plan [Member] | Phantom Shares [Member] | Employees and Non-Employee Directors [Member]              
Share-Based Payment Arrangement, Expense     $ 181,000 $ 144,000 $ 362,000 $ 404,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) 212,937            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Maximum Payment Per Share (in dollars per share) $ 12            
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)         159,702    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares)     26,618   26,618    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)         26,617    
The Phantom Plan [Member] | Phantom Shares [Member] | Employees and Non-Employee Directors [Member] | Vesting Increments [Member]              
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 3 years