Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Stock Based Compensation (Details Textual)

v3.22.2.2
Note 9 - Stock Based Compensation (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Feb. 27, 2015
Share-Based Payment Arrangement, Expense $ 163 $ 139 $ 332 $ 285  
Share Based Compensation Expense, Estimated Future Compensation, Total     $ 1,500    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)     2 years 1 month 6 days    
2015 Stock Option and Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)         250,000
2015 Stock Option and Incentive Plan [Member] | Restricted Stock [Member] | Minimum [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     3 years    
2015 Stock Option and Incentive Plan [Member] | Restricted Stock [Member] | Maximum [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     5 years