Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Stockholders' Equity and Equity-linked Instruments (Details Textual)

v3.23.2
Note 6 - Stockholders' Equity and Equity-linked Instruments (Details Textual) - USD ($)
 3 Months Ended 6 Months Ended 9 Months Ended
Nov. 22, 2022
Mar. 25, 2022
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2023
Dec. 31, 2022
Preferred Stock, Par or Stated Value Per Share (in dollars per share)     $ 0.001   $ 0.001   $ 0.001 $ 0.001
Tumim [Member]                
Common Stock, Maximum Shares Sold   10,000,000            
Warrants Issued With Placement Agent Agreement [Member]                
Warrants and Rights Outstanding, Term     5 years   5 years   5 years  
Class of Warrants and Rights, Number of Securities Called by Warrants or Rights, Percentage of Total Common Stock Issuable Upon Conversion of Preferred Shares     14.50%   14.50%   14.50%  
Subscription Agreements [Member] | Securities Purchase Agreement [Member]                
Percentage of Proceeds from Issuance of Equity to Redeem Debt Outstanding       50.00%        
Proceeds from Issuance of Preferred Stock Used in Connection With Redemption of Debt     $ 0   $ 719,000      
Placement Agency Agreement [Member]                
Aggregate Amount Required in Equity Offering for Agent Having Right to Appoint     $ 10,000,000   $ 10,000,000   $ 10,000,000  
Purchase Agreement [Member] | Tumim [Member]                
Stock Issued During Period, Shares, New Issues (in shares)   50,000            
Stock Issued During Period, Value, New Issues   $ 100,000            
Common Stock, Maximum Shares Allowed to Issue and Sell, Initial   7,361,833            
Common Stock, Maximum Shares Allowed to Issue and Sell, Percentage of Shares Issued and Outstanding, Initial   19.99%            
Beneficial Ownership, Minimum Percentage of Shares Outstanding, Initial   4.99%            
Purchase Agreement [Member] | Tumim [Member] | Maximum [Member]                
Beneficial Ownership, Minimum Percentage of Shares Outstanding, Initial   9.99%            
Series AA, AA-2, AA-3, and AA-4 Convertible Preferred Stock [Member]                
Stock Issued During Period, Shares, New Issues (in shares)     11,781          
Conversion Shares (in shares)     24,570,000   24,570,000   24,570,000  
Series AA, AA-2, AA-3, and AA-4 Convertible Preferred Stock [Member] | Subscription Agreements [Member]                
Stock Issued During Period, Shares, New Issues (in shares)     11,781          
Preferred Stock, Par or Stated Value Per Share (in dollars per share)     $ 0.001   $ 0.001   $ 0.001  
Shares Issued, Price Per Share (in dollars per share)     $ 1,000   $ 1,000   $ 1,000  
Preferred Stock, Beneficial Ownership Limitations, Percentage of Outstanding Shares Required to be Converted When Common Stock Volume-weighted Average Price Over Previous 10 Days as Reported Equals More Than 250% of Conversion Price     50.00%   50.00%   50.00%  
Preferred Stock, Beneficial Ownership Limitations, Percentage of Outstanding Shares Required to be Converted When Common Stock Volume-weighted Average Price Over Previous 10 Days as Reported Equals More Than 300% of Conversion Price     100.00%   100.00%   100.00%  
Preferred Stock Dividends, Percentage of Common Shares     20.00%   20.00%   20.00%  
Series A Preferred Stock [Member]                
Stock Issued During Period, Shares, New Issues (in shares) 5,359              
Conversion Shares (in shares) 8,644,000     3,500,000   3,500,000    
Series A Preferred Offerings [Member]                
Stock Issued During Period, Shares, New Issues (in shares)             12,622  
Conversion Shares (in shares)     22,414,000   22,414,000   22,414,000  
Series A Preferred Offerings [Member] | Subscription Agreements [Member]                
Stock Issued During Period, Shares, New Issues (in shares)           12,622    
Preferred Stock, Par or Stated Value Per Share (in dollars per share)       $ 0.001   $ 0.001    
Shares Issued, Price Per Share (in dollars per share)       $ 1,000   $ 1,000    
Preferred Stock, Beneficial Ownership Limitations, Percentage of Outstanding Shares Required to be Converted When Common Stock Volume-weighted Average Price Over Previous 10 Days as Reported Equals More Than 250% of Conversion Price     50.00%   50.00%   50.00%  
Preferred Stock, Beneficial Ownership Limitations, Percentage of Outstanding Shares Required to be Converted When Common Stock Volume-weighted Average Price Over Previous 10 Days as Reported Equals More Than 300% of Conversion Price     100.00%   100.00%   100.00%  
Preferred Stock Dividends, Percentage of Common Shares     20.00%   20.00%   20.00%  
Preferred Stock, Stated Value     $ 1,000   $ 1,000   $ 1,000  
Preferred Stock, Beneficial Ownership Limitation, Minimum Percentage of Outstanding Preferred Stock Shares Required       51.00%   51.00%    
Preferred Stock Voting Exceptions, Minimum Amount of Indebtedness Required     $ 5,000,000   $ 5,000,000   $ 5,000,000  
Series A Preferred Offerings [Member] | Placement Agency Agreement [Member]                
Placement Fee, Percentage of Proceeds from Issuance of Equity         10.00%      
Nonaccountable Expense, Percentage of Proceeds from Issuance of Equity         3.00%