v3.26.1
Note 6 - Stock Based Compensation (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 10, 2026
Apr. 17, 2017
Mar. 31, 2026
Mar. 31, 2025
Share-Based Payment Arrangement, Expense     $ 33 $ 22
Director [Member]        
Stock Issued During Period, Shares, Treasury Stock Reissued (in shares)     28,740 16,116
Share-Based Payment Arrangement, Expense     $ 200 $ 200
Restricted Stock [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) 4,552      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options Granted in Period, Total Fair Value $ 100      
The 2017 Stock Incentive Plan [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)   370,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)     16,583  
The 2017 Stock Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)   10 years    
The 2017 Stock Incentive Plan [Member] | Incentive Option [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)   5 years    
The 2017 Stock Incentive Plan [Member] | Share-Based Payment Arrangement, Option, Treasury Stock [Member]        
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)       3,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)       $ 5.51
The 2017 Stock Incentive Plan [Member] | Minimum [Member] | Share-Based Payment Arrangement, Option [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   2 years    
The 2017 Stock Incentive Plan [Member] | Maximum [Member] | Share-Based Payment Arrangement, Option [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   3 years