Annual report pursuant to Section 13 and 15(d)

Note 4 - Stock-based Compensation (Details Textual)

v3.22.1
Note 4 - Stock-based Compensation (Details Textual) - USD ($)
12 Months Ended
Nov. 23, 2021
Dec. 31, 2021
Dec. 31, 2020
Share-based Payment Arrangement, Expense   $ 471,000 $ 231,000
Share-based Payment Arrangement, Expense, Tax Benefit   $ 0 $ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in shares)   549,024  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)   $ 1.46 $ 1.36
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)   4,000 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value   $ 2,500  
Proceeds from Stock Options Exercised   4,240  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value   122,000 $ 0
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total   $ 320,000  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)   1 year 9 months 18 days  
Share-based Payment Arrangement, Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period (in shares)   4,000  
Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)   70,000 15,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value   $ 113,000 $ 17,000
Former Chief Executive Officer [Member]      
Share-based Payment Arrangement, Expense $ 243,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number (in shares) 69,918    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in shares) 333,332    
Reversal of Allocated Share Based Compensation Expense $ 503,000    
Former Chief Executive Officer [Member] | Share-based Payment Arrangement, Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) 5 years    
Former Chief Executive Officer [Member] | Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) 33,333    
Share-based Compensation Arrangement by Share-based Payment Award, Award Settlement Period (Day) 30 days    
Director [Member] | Restricted Stock [Member] | Vesting As Scheduled [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)   20,000 15,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value   $ 43,000 $ 17,000