XML 55 R41.htm IDEA: XBRL DOCUMENT v3.25.3
Note 2 - Summary of Significant Accounting Policies (Details Textual)
$ / shares in Units, shares in Thousands
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
May 31, 2025
USD ($)
$ / shares
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Jun. 20, 2025
Feb. 28, 2025
Cash, Uninsured Amount   $ 800,000   $ 800,000        
Number of Operating Segments       1        
Financing Receivable, Number of Portfolio Segments   3   3        
Tangible Asset Impairment Charges       $ 0   $ 0    
Accrued Liabilities, Current   $ 1,563,000   1,563,000   1,548,000    
Revenue from Contract with Customer, Excluding Assessed Tax   226,000 $ 96,000 581,000 $ 271,000      
Advertising Expense   $ 15,000 $ 31,000 $ 148,000 127,000      
Series A Convertible Preferred Stock [Member]                
Preferred Stock, Shares Outstanding (in shares) | shares   0   0        
Software Upgrade Services [Member]                
Revenue from Contract with Customer, Excluding Assessed Tax       $ 0 $ 0      
Related Party [Member]                
Notes Payable, Current   $ 1,696,000   1,696,000   $ 0    
KardioNav, Inc. [Member]                
Other Assets, Current   138,000   138,000        
Accrued Liabilities, Current   16,000   16,000        
KardioNav, Inc. [Member] | Related Party [Member]                
Notes Payable, Current   303,000   303,000        
Cardionomix Inc. [Member]                
Notes Payable   $ 1,300,000   1,300,000        
Cardionomix Inc. [Member] | Restricted Stock [Member]                
Stock Issued During Period, Value, New Issues       $ 300,000        
Cardionomix Inc. [Member]                
Subsidiary, Ownership Percentage, Parent   82.00%   82.00%       82.00%
Cardionomix Inc. [Member] | Chief Executive Officer and Chairman of the Board [Member]                
Subsidiary, Ownership Percentage, Parent   12.00%   12.00%        
Cardionomix Inc. [Member] | Certain Third Parties [Member]                
Subsidiary, Ownership Percentage, Parent   6.00%   6.00%        
KardioNav, Inc. [Member]                
Subsidiary, Ownership Percentage, Parent   57.00%   57.00%     57.00%  
KardioNav, Inc. [Member] | Chief Executive Officer and Chairman of the Board [Member]                
Subsidiary, Ownership Percentage, Parent   10.00%   10.00%        
KardioNav, Inc. [Member] | Certain Third Parties [Member]                
Subsidiary, Ownership Percentage, Parent   33.00%   33.00%        
QHSLabs Notes [Member]                
Debt Securities, Available-for-Sale $ 864,000 $ 981,000   $ 981,000        
Debt Securities, Unrealized Gain (Loss)   $ 107,000   $ 117,000        
QHSLabs Notes [Member] | The 2021 Note [Member]                
Receivable with Imputed Interest, Face Amount $ 806,000              
Receivable with Imputed Interest, Effective Yield (Interest Rate) 5.00%              
Receivable with Imputed Interest, Default Yield (Default Interest Rate) 18.00%              
Receivable with Imputed Interest, Conversion Rate (in dollars per share) | $ / shares $ 20              
QHSLabs Notes [Member] | The 2022 Note [Member]                
Receivable with Imputed Interest, Face Amount $ 440,000              
Receivable with Imputed Interest, Effective Yield (Interest Rate) 5.00%              
Receivable with Imputed Interest, Default Yield (Default Interest Rate) 18.00%              
Receivable with Imputed Interest, Conversion Rate (in dollars per share) | $ / shares $ 0.2              
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]                
Number of Major Customers   4 3 2 5      
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer One [Member]                
Concentration Risk, Percentage   25.00% 38.00% 33.00% 30.00%      
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Two [Member]                
Concentration Risk, Percentage   14.00% 36.00% 13.00% 24.00%      
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Three [Member]                
Concentration Risk, Percentage   13.00% 16.00%   12.00%      
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Four [Member]                
Concentration Risk, Percentage   10.00%     10.00%      
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Five [Member]                
Concentration Risk, Percentage         10.00%      
Customer Concentration Risk [Member] | Accounts Receivable [Member]                
Number of Major Customers       3   4    
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member]                
Concentration Risk, Percentage       24.00%   46.00%    
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member]                
Concentration Risk, Percentage       23.00%   19.00%    
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Three [Member]                
Concentration Risk, Percentage       22.00%   16.00%    
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Four [Member]                
Concentration Risk, Percentage           13.00%    
Supplier Concentration Risk [Member] | Accounts Payable [Member]                
Number of Vendors       3   3    
Supplier Concentration Risk [Member] | Accounts Payable [Member] | Vendor One [Member]                
Concentration Risk, Percentage       55.00%   28.00%    
Supplier Concentration Risk [Member] | Accounts Payable [Member] | Vendor Two [Member]                
Concentration Risk, Percentage       16.00%   18.00%    
Supplier Concentration Risk [Member] | Accounts Payable [Member] | Vendor Three [Member]                
Concentration Risk, Percentage       10.00%   15.00%