v3.26.1
Note 3 - Equity 1 (Details Textual)
 1 Months Ended 3 Months Ended 6 Months Ended 7 Months Ended 10 Months Ended 21840 Months Ended 21850 Months Ended
Apr. 01, 2026
shares
Nov. 21, 2025
USD ($)
Nov. 18, 2025
USD ($)
$ / shares
shares
Aug. 11, 2025
shares
Jul. 22, 2025
$ / shares
shares
Jul. 21, 2025
$ / shares
shares
Apr. 01, 2025
shares
Nov. 25, 2024
USD ($)
$ / shares
shares
Nov. 22, 2024
$ / shares
shares
Jul. 10, 2024
shares
Apr. 01, 2024
shares
Oct. 31, 2025
shares
Jul. 31, 2025
shares
Aug. 31, 2023
Jun. 30, 2026
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2025
USD ($)
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
Aug. 25, 2025
USD ($)
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 24, 2026
$ / shares
shares
Mar. 31, 2026
$ / shares
shares
Jul. 20, 2025
$ / shares
Feb. 28, 2025
USD ($)
Nov. 29, 2023
$ / shares
shares
Jun. 30, 2023
shares
Common Stock, Shares Authorized (in shares)                             500,000,000       500,000,000 500,000,000   500,000,000 500,000,000 500,000,000     500,000,000  
Preferred Stock, Shares Authorized (in shares)                             10,000,000       10,000,000 10,000,000   10,000,000   10,000,000     10,000,000  
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares                             $ 0.001       $ 0.001 $ 0.001   $ 0.001 $ 0.001 $ 0.001     $ 0.001  
Preferred Stock, Shares Outstanding (in shares)                             0       0 0   0   0        
Proceeds from Issuance of Common Stock | $                             $ 0   $ 2,121,000                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)       8,463                 2,734                              
Share-Based Payment Arrangement, Accelerated Cost | $                               $ 3,700,000                        
Class of Warrant or Right, Outstanding (in shares)                                               1,194        
Series A Warrants [Member]                                                        
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)               1                                        
Number of Warrants Per Pre-funded Unit (in shares)               1                                        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares               $ 137.34                                        
Warrants and Rights Outstanding, Term (Year)               5 years                                        
Class of Warrant or Right, Fair Value Per Share (in dollars per share) | $ / shares               $ 112.5537                                        
Class of Warrant or Right, Outstanding (in shares)                             2,643       2,643 2,643   2,643            
November 2024 Pre-funded Warrant [Member]                                                        
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)               1                                        
Number of Warrants Per Pre-funded Unit (in shares)               1                                        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares               $ 0.021                                        
Class of Warrants or Rights, Maximum Beneficial Ownership               4.99%                                        
Class of Warrant or Right, Fair Value Per Share (in dollars per share) | $ / shares               $ 132.909                                        
Representative's Warrants [Member]                                                        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares           $ 56.091                                            
Warrants and Rights Outstanding, Term (Year)           5 years                                            
Class of Warrant or Right, Lock-up Period (Day)               180 days                                        
Class of Warrant or Right, Fair Value Per Share (in dollars per share) | $ / shares           $ 31.5   $ 109.4625                                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)           4,223                                            
Class of Warrant or Right, Outstanding (in shares)                             8,606       8,606 8,606   8,606            
Series A Warrants and the Representative's Warrants [Member] | Black-Scholes Model [Member] | Measurement Input, Discount Rate [Member]                                                        
Warrants and Rights Outstanding, Measurement Input               0.0417                                        
Series A Warrants and the Representative's Warrants [Member] | Black-Scholes Model [Member] | Measurement Input, Price Volatility [Member]                                                        
Warrants and Rights Outstanding, Measurement Input               1.4415                                        
November 2025 Pre-funded Warrants [Member]                                                        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares                             $ 0.021       $ 0.021 $ 0.021   $ 0.021            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     214,366                                                  
Class of Warrant or Right, Exercised During Period (in shares)                                     214,366                  
Proceeds from Warrant Exercises | $                                     $ 4.5                  
Series C Warrants [Member]                                                        
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)     1                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 18.0747                                                  
Warrants and Rights Outstanding, Term (Year)     5 years 6 months                                                  
Class of Warrants or Rights, Maximum Beneficial Ownership     4.99%                                                  
Class of Warrant or Right, Fair Value Per Share (in dollars per share) | $ / shares     $ 17.01                                                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     428,731                                                  
Class of Warrant or Right, Outstanding (in shares)                             428,731       428,731 428,731   428,731            
Series C Warrants [Member] | Maximum [Member]                                                        
Class of Warrants or Rights, Maximum Beneficial Ownership     9.99%                                                  
Series C Warrants [Member] | Measurement Input, Discount Rate [Member]                                                        
Warrants and Rights Outstanding, Measurement Input     0.0376                                                  
Series C Warrants [Member] | Measurement Input, Price Volatility [Member]                                                        
Warrants and Rights Outstanding, Measurement Input     1.548                                                  
November 2025 Pre-funded and Series C Warrants [Member]                                                        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 0.021                                                  
Class of Warrant or Right, Purchase Price of Warrants or Rights (in dollars per share) | $ / shares     $ 23.304                                                  
Existing Warrants [Member]                                                        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares           $ 137.34                                            
Proceeds from Issuance or Sale of Equity | $   $ 2,500,000                                                    
Class of Warrant or Right, Outstanding (in shares)           70,366                                            
Class of Warrant or Right, Exchanges, Percentage of Underlying Shares           100.00%                                            
Payments for Warrant Issuance Fees | $   $ 300,000                                                    
Existing Warrants at 1.723 Exercise Price [Member]                                                        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares           $ 36.162                                     $ 36.183      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)           29,649                                            
Stock Issued During Period, Shares, Warrants Exercised (in shares)           40,717                                            
Class of Warrant or Right, Exercised During Period, Exercise Price (in dollars per share) | $ / shares           $ 36.183                                            
Modified Existing Warrants [Member]                                                        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares         $ 0.021 $ 0.021                                            
Warrants and Rights Outstanding, Term (Year)           5 years 6 months                                            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)           29,649                                            
Stock Issued During Period, Shares, Warrants Exercised (in shares)         29,649                                              
Series B Warrants [Member]                                                        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares           $ 36.183                                            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)           70,366                                            
Class of Warrant or Right, Outstanding (in shares)                             70,366       70,366 70,366   70,366            
Existing Warrants at 1.722 Exercise Price [Member]                                                        
Warrants and Rights Outstanding, Term (Year)           5 years 6 months                                            
Inducement Warrants [Member]                                                        
Class of Warrants or Rights, Maximum Beneficial Ownership           4.99%                                            
Class of Warrant or Right, Fair Value Per Share (in dollars per share) | $ / shares           $ 32.76                                            
Issued Warrants [Member] | Measurement Input, Discount Rate [Member] | Maximum [Member]                                                        
Warrants and Rights Outstanding, Measurement Input           0.0393                                            
Issued Warrants [Member] | Measurement Input, Discount Rate [Member] | Minimum [Member]                                                        
Warrants and Rights Outstanding, Measurement Input           0.0388                                            
Issued Warrants [Member] | Measurement Input, Price Volatility [Member] | Maximum [Member]                                                        
Warrants and Rights Outstanding, Measurement Input           1.51                                            
Issued Warrants [Member] | Measurement Input, Price Volatility [Member] | Minimum [Member]                                                        
Warrants and Rights Outstanding, Measurement Input           1.50                                            
Common Warrants [Member]                                                        
Class of Warrant or Right, Outstanding (in shares)                             1,582       1,582 1,582   1,582            
RF Innovations, Inc. [Member]                                                        
Stock Issued During Period, Shares, New Issues (in shares)                   595                                    
Underwriters [Member] | Series A Warrants [Member]                                                        
Equity Offering, Option, Maximum Warrants (in shares)                 9,830                                      
Class of Warrant or Right, Issued During Period (in shares)                 7,468                                      
Underwriters [Member] | Representative's Warrants [Member]                                                        
Class of Warrant or Right, Issued During Period (in shares)               4,383                                        
Share-Based Payment Arrangement, Option [Member]                                                        
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $                             $ 100,000       $ 100,000 $ 100,000   $ 100,000            
Share-Based Payment Arrangement, Expense | $                             $ 0   $ 300,000                      
Board of Directors Chairman [Member]                                                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)       418                                                
Executive Chair of the Board [Member]                                                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)       3,122                                                
Director [Member]                                                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)       179                                                
Chief Executive Officer [Member]                                                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)       2,143                                                
Chief Technology Officer [Member]                                                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)       418                                                
Chief Medical Officer [Member]                                                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)       627                                                
Chief Financial Officer [Member]                                                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)       1,556                                                
The 2023 Stock Plan [Member]                                                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)                                                       9,524
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum                           5.00%                            
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) 27,165           5,945       2,244 90,476                                
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)                             135,306       135,306 135,306   135,306            
ATM Agreement [Member]                                                        
Equity Offering, Maximum Offering Amount | $                                         $ 3,500,000         $ 2,100,000    
Stock Issued During Period, Shares, New Issues (in shares)                             113,629     62,097                    
Proceeds from Issuance of Common Stock | $                             $ 3,400,000     $ 2,100,000                    
Payments of Stock Issuance Costs | $                             $ 100,000                          
Amended ATM Agreement [Member]                                                        
Equity Offering, Increase in Offering Amount | $                                         1,400,000              
Lincoln Park Purchase Agreement [Member]                                                        
Equity Offering, Maximum Offering Amount | $                                         $ 15,000,000              
Stock Issued During Period, Shares, New Issues (in shares)                                         12,472 476            
Payments of Stock Issuance Costs | $                                       $ 300,000                
Underwritten Public Offering [Member]                                                        
Number of Common Units Issued (in shares)               21,843                                        
Number of Shares Per Common Unit (in shares)               1                                        
Number of Warrants Per Common Unit (in shares)               1                                        
Number of Pre-funded Units Issued (in shares)               43,696                                        
Common Units Issued, Purchase Price (in dollars per share) | $ / shares                 $ 137.34                                      
Pre-funded Units Issued, Purchase Price (in dollars per share) | $ / shares                 $ 137.319                                      
Commission Percentage               8.00%                                        
Proceeds from Issuance or Sale of Equity | $               $ 10,000,000                                        
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs | $               1,500,000                                        
Proceeds From Issuance of Common Stock, Net of Issuance Costs | $               9,000,000                                        
Underwritten Public Offering [Member] | Non-cash Expenses [Member]                                                        
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs | $               $ 500,000                                        
Over-Allotment Option [Member] | Underwriters [Member]                                                        
Stock Issued During Period, Shares, New Issues (in shares)                 7,468                                      
Equity Offering, Option Period (Day)                 45 days                                      
Equity Offering, Option, Maximum Shares (in shares)                 9,830                                      
Securities Purchase Agreement [Member]                                                        
Commission Percentage     8.00%                                                  
Proceeds from Issuance or Sale of Equity | $     $ 5,000,000                                                  
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs | $     $ 36,000                                                  
Equity Offering, Covenant, Common Stock Share Price (in dollars per share) | $ / shares     $ 23.325                                                  
Payments of Financing Costs for Warrants Issued | $     $ 450,000                                                  
Payments of Placement Agent Fees | $     $ 50,000