XML 47 R36.htm IDEA: XBRL DOCUMENT v3.23.1
Note 7 - Stock Options (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)     100,000
Share-Based Payment Arrangement, Expense $ 36,174 $ 139,648  
Rolling Stock Option Plan [Member]      
Share-based Compensation Arrangement, Percent of Issued and Outstanding Common Shares Reserved 10.00%    
Rolling Stock Option Plan [Member] | Employee Stock Option, Expiration Date of August 1, 2024 [Member] | Vesting Every Six Months [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage 20.00%    
Rolling Stock Option Plan [Member] | Employee Stock Option, Expiration Date of July 21, 2023 [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) 0    
Share-Based Payment Arrangement, Expense $ 36,174    
Rolling Stock Option Plan [Member] | Employee Stock Option, Expiration Date of July 21, 2023 [Member] | Share-Based Payment Arrangement, Tranche One [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage 20.00%