v3.26.1
Note 3 - Equity 1 (Details Textual)
 1 Months Ended 4 Months Ended 7 Months Ended 12 Months Ended 13 Months Ended
Apr. 01, 2026
shares
Nov. 21, 2025
USD ($)
Nov. 18, 2025
USD ($)
$ / shares
shares
Aug. 25, 2025
USD ($)
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
Jul. 10, 2024
USD ($)
shares
Feb. 15, 2024
USD ($)
$ / shares
shares
Oct. 31, 2025
shares
Jul. 31, 2025
shares
Aug. 31, 2023
Mar. 31, 2026
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
$ / shares
shares
Mar. 31, 2025
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
Feb. 28, 2025
USD ($)
Mar. 31, 2024
shares
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  
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  
Preferred Stock, Shares Authorized (in shares)                               10,000,000 10,000,000 10,000,000 10,000,000 10,000,000       10,000,000  
Preferred Stock, Shares Outstanding (in shares)                               0 0 0 0 0          
Proceeds from Issuance of Common Stock | $                                   $ 0 $ 2,000            
Payments of Stock Issuance Costs | $                                   $ (0) $ 176,000            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)         177,652                 57,331       234,983              
Share-Based Payment Arrangement, Accelerated Cost | $                                   $ 3,700,000              
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)                                   5,000 143,303            
Stock Issued During Period, Value, New Issues | $                                   $ 3,214,000 $ 103,000            
Payments of Financing Costs for Warrants Issued | $                                   485,000 (0)            
Proceeds from Warrant Exercises | $                                   $ 0 $ 1,000            
Class of Warrant or Right, Outstanding (in shares)                               25,003 25,003 25,003 25,003 25,003     25,003    
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                 $ 6.54                                
Warrants and Rights Outstanding, Term (Year)                 5 years                                
Class of Warrant or Right, Fair Value Per Share (in dollars per share) | $ / shares                 $ 5.3597                                
Class of Warrant or Right, Outstanding (in shares)                               55,500 55,500 55,500   55,500          
Pre-funded 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                 $ 0.001             $ 0.001 $ 0.001 $ 0.001   $ 0.001          
Class of Warrants or Rights, Maximum Beneficial Ownership                 4.99%                                
Class of Warrant or Right, Fair Value Per Share (in dollars per share) | $ / shares                 $ 6.329                                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     4,501,666                                            
Class of Warrant or Right, Exercised During Period (in shares)                               4,501,666                  
Proceeds from Warrant Exercises | $                               $ 4.5                  
Representative's Warrants [Member]                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares             $ 2.671                                    
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             $ 1.5   $ 5.2125                                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)             88,656                                    
Class of Warrant or Right, Outstanding (in shares)                               180,641 180,641 180,641   180,641          
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     $ 0.8607                                            
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     $ 0.81                                            
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     9,003,332                                            
Class of Warrant or Right, Outstanding (in shares)                               9,003,332 9,003,332 9,003,332   9,003,332          
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                                            
Pre-funded and Series C Warrants [Member]                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 0.001                                            
Class of Warrant or Right, Purchase Price of Warrants or Rights (in dollars per share) | $ / shares     $ 1.1097                                            
Existing Warrants [Member]                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares             $ 6.54                                    
Proceeds from Issuance or Sale of Equity | $   $ 2,500,000                                              
Class of Warrant or Right, Outstanding (in shares)             1,477,596                                    
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           $ 1.723 $ 1.723                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)           1,477,596                                      
Stock Issued During Period, Shares, Warrants Exercised (in shares)             855,000                                    
Class of Warrant or Right, Exercised During Period, Exercise Price (in dollars per share) | $ / shares             $ 1.723                                    
Existing Warrants at 1.722 Exercise Price [Member]                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares             $ 1.722                                    
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)             622,596                                    
Modified Existing Warrants [Member]                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares           $ 0.001                                      
Warrants and Rights Outstanding, Term (Year)             5 years 6 months                                    
Stock Issued During Period, Shares, Warrants Exercised (in shares)           622,596                                      
Series B Warrants [Member]                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares             $ 1.723                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)             1,477,596                                    
Class of Warrant or Right, Outstanding (in shares)                               1,477,596 1,477,596 1,477,596   1,477,596          
Inducement Warrants [Member]                                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares           $ 1.723                                      
Class of Warrants or Rights, Maximum Beneficial Ownership             4.99%                                    
Class of Warrant or Right, Fair Value Per Share (in dollars per share) | $ / shares             $ 1.56                                    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)           1,477,596                                      
Common Warrants [Member]                                                  
Class of Warrant or Right, Outstanding (in shares)                               33,131 33,131 33,131   33,131          
RF Innovations, Inc. [Member]                                                  
Stock Issued During Period, Shares, New Issues (in shares)                     12,500                            
Stock Issued During Period, Value, New Issues | $                     $ 100,000                            
Common Stock, Discount for Lack of Marketability                     25.60%                            
Maximum Percentage of Shares Sold in Thirty Days                     10.00%                            
Underwriters [Member] | Series A Warrants [Member]                                                  
Equity Offering, Option, Maximum Warrants (in shares)                   206,422                              
Class of Warrant or Right, Issued During Period (in shares)                   156,809                              
Underwriters [Member] | Representative's Warrants [Member]                                                  
Class of Warrant or Right, Issued During Period (in shares)                 91,985                                
Minimum [Member] | Issued Warrants [Member] | Measurement Input, Discount Rate [Member]                                                  
Warrants and Rights Outstanding, Measurement Input             0.0393                                    
Minimum [Member] | Issued Warrants [Member] | Measurement Input, Price Volatility [Member]                                                  
Warrants and Rights Outstanding, Measurement Input             1.50                                    
Maximum [Member] | Series C Warrants [Member]                                                  
Class of Warrants or Rights, Maximum Beneficial Ownership     9.99%                                            
Maximum [Member] | Issued Warrants [Member] | Measurement Input, Discount Rate [Member]                                                  
Warrants and Rights Outstanding, Measurement Input             0.0388                                    
Maximum [Member] | Issued Warrants [Member] | Measurement Input, Price Volatility [Member]                                                  
Warrants and Rights Outstanding, Measurement Input             1.51                                    
Black-Scholes Model [Member] | Series A Warrants and the Representative's Warrants [Member] | Measurement Input, Discount Rate [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                 0.0417                                
Black-Scholes Model [Member] | Series A Warrants and the Representative's Warrants [Member] | Measurement Input, Price Volatility [Member]                                                  
Warrants and Rights Outstanding, Measurement Input                 1.4415                                
The 2023 Stock Plan [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)                                                 200,000
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)               124,852         1,900,000                        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)                               2,270,968 2,270,968 2,270,968   2,270,968          
The 2023 Stock Plan [Member] | Subsequent Event [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) 570,467                                                
ATM Agreement [Member]                                                  
Equity Offering, Maximum Offering Amount | $                                         $ 3,500,000 $ 2,100,000      
Stock Issued During Period, Shares, New Issues (in shares)                                       2,386,216          
Proceeds from Issuance of Common Stock | $                                       $ 3,400,000          
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)       261,932                         10,000                
Payments of Stock Issuance Costs | $                                 $ 300,000                
Underwritten Public Offering [Member]                                                  
Number of Common Units Issued (in shares)                 458,691                                
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)                 917,596                                
Common Units Issued, Purchase Price (in dollars per share) | $ / shares                 $ 6.54                                
Pre-funded Units Issued, Purchase Price (in dollars per share) | $ / shares                 $ 6.539                                
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)                   156,809                              
Equity Offering, Option Period (Day)                   45 days                              
Equity Offering, Option, Maximum Shares (in shares)                   206,422                              
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     $ 1.1107                                            
Payments of Financing Costs for Warrants Issued | $     $ 450,000                                            
Payments of Placement Agent Fees | $     $ 50,000                                            
Board of Directors Chairman [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)         8,773                                        
Executive Chair of the Board [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)         65,542                                        
Director [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)         3,750                                        
Chief Executive Officer [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)         45,000                                        
Chief Technology Officer [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)         8,773                                        
Chief Medical Officer [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)         13,159                                        
Chief Financial Officer [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)         32,655                                        
Warrant [Member]                                                  
Preferred Stock, Shares Outstanding (in shares)                                     0            
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $                               $ 0 0 $ 0   0          
Share-Based Payment Arrangement, Expense | $                                   0 $ 100,000            
Restricted Stock [Member]                                                  
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $                               0 0 0   0          
Share-Based Payment Arrangement, Expense | $                                   0 116,375            
Restricted Stock [Member] | Marketing Consultant [Member]                                                  
Stock Issued During Period, Shares, Issued for Services (in shares)                       1,750                          
Shares Issued, Price Per Share (in dollars per share) | $ / shares                       $ 76                          
Stock Issued During Period, Value, Issued for Services | $                       $ 133,000                          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month)                       12 months                          
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, Option [Member] | Black-Scholes Model [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grant Date Fair Value | $                               $ 9,000 $ 9,000 $ 9,000 $ 2,600,000 $ 9,000          
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Discount Rate                                   4.06%              
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year)                                   6 years 3 months 6 years 3 months            
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate                                   139.00%              
Share-Based Payment Arrangement, Option [Member] | Black-Scholes Model [Member] | Minimum [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Discount Rate                                     4.17%            
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate                                     110.00%            
Share Price (in dollars per share) | $ / shares                                     $ 1.99            
Share-Based Payment Arrangement, Option [Member] | Black-Scholes Model [Member] | Maximum [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Discount Rate                                     4.39%            
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate                                     138.00%            
Share Price (in dollars per share) | $ / shares                                     $ 56.2            
Share-Based Payment Arrangement, Option [Member] | The 2023 Stock Plan [Member]                                                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Month)                                   4 years 4 years            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)                                   5,000 143,303            
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)                                     10 years