Annual report pursuant to Section 13 and 15(d)

Note 4 - Stock-based Compensation (Details Textual)

v3.21.1
Note 4 - Stock-based Compensation (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Share-based Payment Arrangement, Expense $ 231,000 $ 232,000
Share-based Payment Arrangement, Expense, Tax Benefit $ 0 $ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) $ 1.36 $ 1.65
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares) 0 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value $ 0 $ 0
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total $ 292,000  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) 1 year 182 days  
Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) 15,000 5,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 17,000 $ 14,000
Restricted Stock [Member] | Director [Member] | Vesting As Scheduled [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value $ 17,000 $ 14,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) 15,000 5,000