Note 9 - Stockholders' Equity (Deficit) - Summary of Activity of Stock Payable (Details)  | 
12 Months Ended | 
|---|---|
| 
 Dec. 31, 2021  
USD ($)  
shares 
 | |
| Ending balance | $ | $ 0 | 
| Ending balance, shares (in shares) | shares | 0 | 
| Additions, net | $ | $ 654,166 | 
| Additions, net, shares (in shares) | shares | 782,736 | 
| Issuances, net | $ | $ 0 | 
| Issuances, net, shares (in shares) | shares | 0 | 
| Ending balance | $ | $ 654,166 | 
| Ending balance, shares (in shares) | shares | 782,736 | 
| X | ||||||||||
- Definition Amount of common stock payable. No definition available. 
  | 
| X | ||||||||||
- Definition Number of shares to be issued of common stock. No definition available. 
  | 
| X | ||||||||||
- Definition Amount of decrease in common stock payable from issuances. No definition available. 
  | 
| X | ||||||||||
- Definition The decrease in shares to be issued from issuances. No definition available. 
  | 
| X | ||||||||||
- Definition Amount of increase in common stock payable from additions No definition available. 
  | 
| X | ||||||||||
- Definition Amount of increase in shares to be issued from additions. No definition available. 
  |