v3.26.1
Note 7 - Notes Payable (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 26, 2025
Oct. 01, 2025
Sep. 26, 2024
Dec. 31, 2025
Dec. 31, 2024
Jul. 11, 2025
May 05, 2025
Aug. 23, 2024
Aug. 22, 2024
Jul. 25, 2024
Jul. 18, 2024
Jul. 01, 2024
Jun. 25, 2024
May 30, 2024
Long-Term Debt $ 3,078,000       $ 3,078,000                    
Debt Instrument, Unamortized Discount 209,000       209,000                    
Interest Payable 39,000       $ 39,000                    
Class of Warrant or Right, Issued in Period (in shares)         579,098                    
Debt Instrument, Unamortized Premium $ 248,000       $ 248,000                    
Gain (Loss) on Extinguishment of Debt         (3,260,000) $ 0                  
Series M Warrants [Member]                              
Class of Warrant or Right, Issued in Period (in shares) 340,000                            
Mr. Jenkins [Member]                              
Debt Instrument, Face Amount $ 500,000       500,000                    
Interest Payable 0       0                    
Debt Instrument, Unamortized Premium 82,000       82,000                    
FatBoy Capital [Member] | Notes Payable 1 [Member]                              
Debt Instrument, Face Amount 150,000       150,000                    
Interest Payable 0       0                    
Debt Instrument, Unamortized Premium 26,000       26,000                    
FatBoy Capital [Member] | Notes Payable 2 [Member]                              
Debt Instrument, Face Amount 250,000       250,000                    
Interest Payable 0       0                    
Debt Instrument, Unamortized Premium 41,000       41,000                    
FatBoy Capital [Member] | Notes Payable 3 [Member]                              
Debt Instrument, Face Amount 100,000       100,000                    
Interest Payable 0       0                    
Debt Instrument, Unamortized Premium 17,000       17,000                    
Jenkins Family Charitable Institute [Member]                              
Debt Instrument, Face Amount 500,000       500,000                    
Interest Payable 0       0                    
Debt Instrument, Unamortized Premium 82,000       82,000                    
Related Party [Member] | KardioNav, Inc. [Member]                              
Notes Payable, Current 306,000       306,000                    
Cardionomix Promissory Note [Member]                              
Debt Instrument, Face Amount               $ 1,500,000              
Debt Instrument, Interest Rate, Stated Percentage               4.00%              
Interest Expense, Debt         84,000                    
Long-Term Debt               $ 1,300,000              
Debt Instrument, Unamortized Discount 209,000       209,000     $ 254,000              
Debt Instrument, Interest Rate, Effective Percentage               10.00%              
Notes Payable 1,300,000       1,300,000                    
Notes Payable, Principal 1,500,000       1,500,000                    
Interest Payable 39,000       39,000                    
Related Party Notes [Member] | Mr. Jenkins [Member]                              
Debt Instrument, Face Amount                             $ 500,000
Related Party Notes [Member] | FatBoy Capital [Member] | Notes Payable 1 [Member]                              
Debt Instrument, Face Amount                           $ 150,000  
Related Party Notes [Member] | FatBoy Capital [Member] | Notes Payable 2 [Member]                              
Debt Instrument, Face Amount                         $ 250,000    
Related Party Notes [Member] | FatBoy Capital [Member] | Notes Payable 3 [Member]                              
Debt Instrument, Face Amount                       $ 100,000      
Related Party Notes [Member] | Jenkins Family Charitable Institute [Member]                              
Debt Instrument, Face Amount                     $ 500,000        
Related Party Notes [Member] | Related Party [Member]                              
Debt Instrument, Face Amount             $ 150,000                
Debt Instrument, Interest Rate, Stated Percentage             4.20%   12.00% 8.00%          
Interest Expense, Debt         180,000 81,000                  
Notes Payable 1,700,000       1,700,000 1,600,000                  
Notes Payable, Principal 1,500,000       1,500,000                    
Interest Payable           61,000     $ 21,000            
Debt Instrument, Fair Value Disclosure 1,700,000       1,700,000                    
Debt Instrument, Unamortized Premium 248,000       248,000                    
Gain (Loss) on Extinguishment of Debt $ (600,000)                            
Related Party Notes [Member] | Related Party [Member] | Series M Warrants [Member]                              
Class of Warrant or Right, Issued in Period (in shares) 170,000                            
KardioNav Notes [Member] | KardioNav, Inc. [Member]                              
Debt Instrument, Face Amount             $ 150,000                
Debt Instrument, Interest Rate, Stated Percentage             4.20%                
Interest Expense, Debt         6,000                    
Notes Payable $ 306,000       306,000                    
Interest Payable 6,000       6,000                    
Notes Payable, Principle 300,000       300,000                    
Boot Capital First Convertible Note Payable [Member]                              
Debt Instrument, Face Amount   $ 102,000                          
Debt Instrument, Unamortized Discount   2,000                          
Proceeds from Issuance of Debt   100,000                          
Boot Capital Second Convertible Note Payable [Member]                              
Debt Instrument, Face Amount   204,000                          
Debt Instrument, Unamortized Discount   4,000                          
Proceeds from Issuance of Debt   $ 200,000                          
Boot Capital Convertible Notes Payable [Member]                              
Debt Instrument, Interest Rate, Stated Percentage   10.00%                          
Debt Instrument, Default Interest Rate   22.00%                          
Payments of Debt Issuance Costs         7,000                    
Debt Instrument, Convertible, Conversion Price, Percent of VWAP   75.00%                          
Maximum Beneficial Ownership   4.99%                          
Debt Instrument, Percent of Outstanding Payable Within 90 Days   120.00%                          
Debt Instrument, Percent of Outstanding Payable Within 90 to 180 Days   125.00%                          
Debt Instrument, Percent of Outstanding Payable Upon Default   150.00%                          
Short-term Financing Arrangement With Insurance Carrier [Member]                              
Debt Instrument, Face Amount       $ 249,000                      
Debt Instrument, Term (Year)       10 months                      
Debt Instrument, Interest Rate, Stated Percentage       9.99%                      
Interest Expense, Debt         6,000                    
Notes Payable, Current 0       0 $ 177,000                  
Short-term Financing Arrangement With Insurance Carrier 2 [Member]                              
Malpractice Insurance, Coverage Floor     $ 77,000                        
Payments for Malpractice Insurance     15,000                        
Debt Instrument, Face Amount     $ 62,000                        
Debt Instrument, Term (Year)     3 months                        
Debt Instrument, Interest Rate, Stated Percentage     11.34%                        
Interest Expense, Debt         1,000                    
Notes Payable, Current $ 0       $ 0                    
Directors and Officers Liability Insurance [Member]                              
Malpractice Insurance, Coverage Floor       $ 293,000                      
Payments for Malpractice Insurance       $ 44,000