| Note 11 - Investments and Fair Value | Note 11  Investments and fair value   The hierarchy of Level 1, Level 2 and Level 3 Assets are listed as follows:   
|   |   |   |   |   |   | Fair Value Measurement Using |  
|   |   | Unadjusted Quoted Market Prices |   | Quoted Prices for Identical or Similar Assets in Active Markets |   | Significant Unobservable Inputs |   | Significant Unobservable Inputs |   | Significant Unobservable Inputs |  
|   |   | (Level 1) |   | (Level 2) |   | (Level 3) |   | (Level 3) |   | (Level 3) |  
|   |   | Investment in Securities |   |   |   | Contractual interest Legal Recovery |   | Investment in Common Stock Warrants |   | Other Equity Investments |  
| Balance at December 31, 2018 | $ | 362,585 | $ | - | $ | 800,002 | $ | 5,669 | $ | 245,628 |  
|   |   |   |   |   |   |   |   |   |   |   |  
| Total gains or losses |   |   |   |   |   |   |   |   |   |   |  
| Included in earnings (or changes in net assets) |   | (76,395) |   | - |   | (600,002) |   | - |   | (41,600) |  
| Purchases, issuances, sales, and settlements |   |   |   |   |   |   |   |   |   |   |  
| Purchases |   | - |   | - |   | 146,195 |   | - |   | - |  
| Issuances |   | - |   | - |   | - |   | - |   | - |  
| Sales |   | (286,190) |   | - |   | - |   | - |   | - |  
| Settlements |   | - |   | - |   | - |   | - |   | - |  
| Balance at December 31, 2019 |   | - |   | - |   | 346,195 |   | 5,669 |   | 204,028 |  
|   |   |   |   |   |   |   |   |   |   |   |  
| Total gains or losses |   |   |   |   |   |   |   |   |   |   |  
| Included in earnings (or changes in net assets) |   | (10,292) |   | - |   | - |   | (4,669) |   | - |  
| Purchases, issuances, sales, and settlements |   |   |   |   |   |   |   |   |   |   |  
| Purchases |   | 83,536 |   | - |   | 50,717 |   | - |   | - |  
| Issuances |   | - |   | - |   | - |   | - |   | - |  
| Sales |   | (38,418) |   | - |   | - |   | - |   | - |  
| Settlements |   | - |   | - |   | (15,383) |   | - |   | - |  
| Balance at December 31, 2020 | $ | 34,826 | $ | - | $ | 381,529 | $ | 1,000 | $ | 204,028 |    The amortized costs, gross unrealized holding gains and losses, and fair values of the Companys investment securities classified as equity securities, at fair value, at December 31, 2020 consists of the following:   
| Type |   | Amortized Costs |   | Gross Unrealized Gains |   | Gross Unrealized Losses |   | Fair Values |  
| NYSE listed company stock | $ | 10,080 | $ | (1,025) | $ | - | $ | 9,055 |  
| NASDAQ listed company stock |   | 35,340 |   | (9,569) |   | - |   | 25,771 |  
|   | $ | 45,420 | $ | (10,594) | $ | - | $ | 34,826 |    The portion of unrealized gains and losses for the period related to equity securities still held at the reporting date is calculated as follows:   
|   |   | Year Ended December 31, |  
|   |   | 2020 |   | 2019 |  
| Net gains and losses recognized during the period on equity securities | $ | (10,291) | $ | (76,395) |  
|   |   |   |   |   |  
| Less: Net gains (losses) recognized during the period on equity securities sold during the period |   | 303 |   | (76,395) |  
|   |   |   |   |   |  
| Unrealized gains and losses recognized during the reporting period on equity securities still held at the reporting date | $ | (10,594) | $ | - |  |