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Stockholders Equity (Narrative) (Details)
1 Months Ended 6 Months Ended 12 Months Ended
Jun. 21, 2024
May 02, 2024
USD ($)
Apr. 30, 2024
$ / shares
shares
Dec. 21, 2023
USD ($)
$ / shares
shares
Aug. 15, 2022
USD ($)
shares
Aug. 12, 2022
USD ($)
shares
Aug. 12, 2021
USD ($)
Jul. 31, 2017
$ / shares
shares
Jun. 30, 2024
USD ($)
$ / shares
shares
Jun. 30, 2023
shares
Jun. 30, 2022
shares
Dec. 31, 2023
$ / shares
shares
Apr. 29, 2024
$ / shares
shares
Mar. 14, 2024
Dec. 26, 2023
USD ($)
Oct. 30, 2023
Dec. 31, 2020
shares
Class of Stock [Line Items]                                  
Common stock, par value (in dollars per share) | $ / shares                 $ 0.001     $ 0.001          
Gross proceeds | $   $ 8,000,000.0                              
Dividend rate on convertible exchangeable preferred stock (in percent)                 6.00%                
Common stock, shares authorized                 100,000,000     100,000,000          
Cash placement fee, percentage of gross proceeds raised                         7.00%        
Management fee percentage                         1.00%        
July 2017 - Underwritten Public Offering                                  
Class of Stock [Line Items]                                  
Warrants, exercise price per share | $ / shares                 $ 600.00                
Warrants outstanding                 24,968                
December 2023 Private Placement                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares                 419,925                
Exercisable warrants                 396,156                
Warrant outstanding Term                 7 years                
Warrants, exercise price per share | $ / shares                 $ 3.19                
April 2024 Warrants                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares                 14,718,027                
Exercisable warrants                 15,059,972                
December 2023 Insider Private Placement                                  
Class of Stock [Line Items]                                  
Share issue price per share | $ / shares       $ 3.315                          
December 2023 Placement Agency Agreement                                  
Class of Stock [Line Items]                                  
Exercisable warrants                 23,769                
Warrant outstanding Term                 5 years                
Warrants, exercise price per share | $ / shares                 $ 4.14375                
Warrants exercised                 0                
Cash placement fee, percentage of gross proceeds raised       8.00%                          
April 2024, Securities purchase agreement                                  
Class of Stock [Line Items]                                  
Number of shares issued (in shares)     145,000                            
Common Stock Warrants | December 2023 Private Placement                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares       388,200                          
Warrant outstanding Term       7 years                          
Warrants, exercise price per share | $ / shares       $ 3.19                          
Total gross proceeds received | $                             $ 1,000,000.0    
Common Stock Warrants | December 2023 Insider Private Placement | Chief Executive Officer                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares       6,070                          
Common Stock Warrants | December 2023 Insider Private Placement | Chief Financial Officer and Chief Operating Officer                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares       1,886                          
Common Stock Warrants | April 2024, Securities purchase agreement                                  
Class of Stock [Line Items]                                  
Warrants, exercise price per share | $ / shares     $ 1.36                            
Pre-Funded Warrants | December 2023 Securities Purchase Agreement                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares       219,700                          
Warrants, exercise price per share | $ / shares       $ 0.001                          
Share issue price per share | $ / shares       $ 3.314                          
Pre-Funded Warrants | April 2024 Warrants                                  
Class of Stock [Line Items]                                  
Exercisable warrants                 4,823,945                
Warrants, exercise price per share | $ / shares                 $ 0.0001                
Warrants exercised                 341,945                
Pre-Funded Warrants | April 2024, Securities purchase agreement                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares     4,823,945                            
Warrants, exercise price per share | $ / shares     $ 0.0001                            
Placement Agent Warrants                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares                         298,137        
Warrant outstanding Term                         5 years 6 months        
Warrants, exercise price per share | $ / shares                         $ 2.0125        
Placement Agent Warrants | December 2023 Securities Purchase Agreement                                  
Class of Stock [Line Items]                                  
Aggregate fair value Warrants | $                 $ 47,000                
Placement Agent Warrants | December 2023 Private Placement                                  
Class of Stock [Line Items]                                  
Exercisable warrants                 7,956                
Placement Agent Warrants | April 2024 Warrants                                  
Class of Stock [Line Items]                                  
Exercisable warrants                 298,137                
Warrant outstanding Term                 5 years 6 months                
Warrants, exercise price per share | $ / shares                 $ 2.0125                
Placement Agent Warrants | December 2023 Placement Agency Agreement                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares       23,769                          
Warrants, exercise price per share | $ / shares       $ 4.14375                          
Percentage of outstanding common stock       6.00%                          
Placement Agent Warrants | April 2024, Securities purchase agreement                                  
Class of Stock [Line Items]                                  
Aggregate fair value Warrants | $                 $ 609,179                
Pre-funded warrants and common warrants | April 2024, Securities purchase agreement                                  
Class of Stock [Line Items]                                  
Share issue price per share | $ / shares     $ 1.6099                            
Series A warrants                                  
Class of Stock [Line Items]                                  
Warrant outstanding Term     5 years 6 months                            
Series A warrants | April 2024 Warrants                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares                 4,968,945                
Warrant outstanding Term                 5 years 6 months                
Warrants, exercise price per share | $ / shares                 $ 1.36                
Series A warrants | April 2024, Securities purchase agreement                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares     4,968,945                            
Series B Warrants | April 2024 Warrants                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares                 4,968,945                
Warrant outstanding Term                 18 months                
Warrants, exercise price per share | $ / shares                 $ 1.36                
Series B Warrants | April 2024, Securities purchase agreement                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares     4,968,945                            
Warrant outstanding Term     18 months                            
Maximum | December 2023 Placement Agency Agreement                                  
Class of Stock [Line Items]                                  
Placement agent fees | $       $ 85,000                          
Cantor Fitzgerald & Co.                                  
Class of Stock [Line Items]                                  
Aggregate offering price | $             $ 50,000,000.0                    
Number of share sold under the sales agreement         218,738                        
Proceeds from issuance of common stock, gross | $         $ 7,600,000                        
Cantor Fitzgerald & Co. | August 2021 Controlled Equity Offering Sales Agreement                                  
Class of Stock [Line Items]                                  
Number of share sold under the sales agreement           132,473                      
Aggregate purchase price | $           $ 4,494,496                      
Total gross proceeds received | $           $ 2,721,187                      
Reclassified shares           207,807                      
Reclassified shares for which no proceeds were received           75,333                      
Acorn Bioventures, LP                                  
Class of Stock [Line Items]                                  
Warrants to purchase shares                 44,657                
Warrant outstanding Term                 5 years                
Warrants, exercise price per share | $ / shares                 $ 61.95                
Warrants exercised                   0 0            
Co-Placement Agents                                  
Class of Stock [Line Items]                                  
Warrant Exercises (in shares)                   0 0            
Warrants, exercise price per share | $ / shares                 $ 75.00                
Number of warrant to purchase each share of our common stock                 1                
Warrants outstanding                 146,000                
Fractional shares issued                 0                
Co-Placement Agents | Common Stock Warrants                                  
Class of Stock [Line Items]                                  
Percentage of outstanding common stock                 4.99%                
Outstanding common stock at election of purchaser                 9.99%                
Notice period from the holder to increase the percentage of ownership of outstanding common stock after exercise of warrants                 61 days                
Co-Placement Agents | Common Stock Warrants | April 2024, Securities purchase agreement                                  
Class of Stock [Line Items]                                  
Percentage of outstanding common stock     4.99%                            
Outstanding common stock at election of purchaser     9.99%                            
Roth Capital Partners, LLC                                  
Class of Stock [Line Items]                                  
Percentage of compensation raised                           7.00%      
Ladenburg Thalmann & Co. Inc [Member]                                  
Class of Stock [Line Items]                                  
Percentage of compensation raised                               8.00%  
6% Convertible Exchangeable Preferred Stock                                  
Class of Stock [Line Items]                                  
Preferred stock, shares issued                 335,273     335,273          
Preferred stock, shares outstanding                 335,273     335,273          
Share issue price per share | $ / shares                 $ 10.00                
Share Price | $ / shares                 $ 888,300                
Dividend rate on convertible exchangeable preferred stock (in percent) 6.00%               6.00%     6.00%          
Liquidation preference (in dollars per share) | $ / shares                 $ 10.00                
Accrued and unpaid dividends | $                 $ 101,000                
Percentage of closing sales price of common stock that conversion price must exceed in order for preferred stock to be convertible                 150.00%                
Number of trading days within 30 trading days in which the closing price of common stock must exceed conversion price for preferred stock to be convertible                 20 days                
Number of trading days during which closing price of common stock must exceed conversion price for at least 20 days in order for the preferred stock to be convertible                 30 days                
Number of trading days prior to notice of automatic conversion                 5 days                
Redemption price per share (in dollars per share) | $ / shares                 $ 10.00                
Debt principal amount per share, basis for exchange (in dollars per share) | $ / shares                 $ 10.00                
Debt instrument, term                 25 years                
Series A Convertible Preferred Stock                                  
Class of Stock [Line Items]                                  
Preferred stock, shares issued               8,872 264     264          
Preferred stock, shares outstanding                 264     264          
Number of shares converted                 440                
Price per share used to determine number of shares of common stock | $ / shares               $ 1,000                  
Conversion price of convertible preferred stock | $ / shares               $ 600.00                  
Conversion percentage               9.99%                  
Measurement period of consecutive trading days used in determining whether specified triggers are met which would allow the entity to require the conversion of all or part of outstanding preferred stock                 30 days                
Percentage of blocker provision               4.99%                  
Series A Convertible Preferred Stock | Minimum                                  
Class of Stock [Line Items]                                  
Percentage by which the weighted average price of common stock during the measurement period exceeds the initial conversion price which triggers the right of the entity to cause all or part of the outstanding preferred stock to be converted                 300.00%                
Series A Convertible Preferred Stock | Maximum                                  
Class of Stock [Line Items]                                  
Threshold amount of daily trading volume on each trading day during the measurement period which triggers the right of the entity to cause all or part of the outstanding preferred stock to be converted | $                 $ 500,000                
Series B Convertible Preferred Stock                                  
Class of Stock [Line Items]                                  
Preferred stock, shares issued                 0     119,000         237,745
Preferred stock, shares outstanding                 0     119,000          
Outstanding common stock at election of purchaser                 9.99%                
Preferred stock conversion ratio                 1                
Number of common shares issued upon conversion                       39,582          
Number of shares converted                 119,000     118,745          
Shares reserved for future issuance upon conversion                 39,667                
Common Stock | December 2023 Securities Purchase Agreement                                  
Class of Stock [Line Items]                                  
Common stock, par value (in dollars per share) | $ / shares       $ 0.001                          
Share issue price per share | $ / shares       $ 3.315                          
Common stock, shares authorized       168,500                          
Common Stock | December 2023 Insider Private Placement | Chief Executive Officer                                  
Class of Stock [Line Items]                                  
Common stock, shares authorized       6,070                          
Common Stock | December 2023 Insider Private Placement | Chief Financial Officer and Chief Operating Officer                                  
Class of Stock [Line Items]                                  
Common stock, shares authorized       1,886                          
Common Stock | April 2024, Securities purchase agreement                                  
Class of Stock [Line Items]                                  
Share issue price per share | $ / shares     $ 1.61