Quarterly report pursuant to Section 13 or 15(d)

Note 15 - Supplemental Disclosure for Statements of Cash Flows (Details Textual)

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Note 15 - Supplemental Disclosure for Statements of Cash Flows (Details Textual) - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Interest Paid, Excluding Capitalized Interest, Operating Activities $ 3,712 $ 2,900
Proceeds from Issuance of Preferred Stock and Preference Stock $ 0 $ 8,175,000
Stock Issued During Period, Shares, Employee Benefit Plan (in shares) 53,238 30,018
Stock Issued During Period, Value, Employee Benefit Plan $ 44,720 $ 76,846
Issuance of Stock to Defined Contribution Plan for Employer Matching Contribution $ 44,720 $ 76,846
Common Stock [Member]    
Stock Issued During Period, Shares, Employee Benefit Plan (in shares) 53,238 30,018
Stock Issued During Period, Value, Employee Benefit Plan   $ 30
Stock Issued During Period, Shares, Issued for Employee Bonuses (in shares) 16,632  
Employees [Member] | Common Stock [Member]    
Stock Issued During Period, Shares, Issued for Employee Bonuses (in shares) 16,632  
Issuance of Stock to Defined Contribution Plan for Employer Matching Contribution $ 16,965  
Series D Preferred Stock [Member] | Keystone Capital Partners, LLC [Member]    
Proceeds from Issuance of Preferred Stock and Preference Stock   $ 2.925