v3.26.1
Note 2 - Summary of Significant Accounting Policies (Details Textual)
1 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
shares
Mar. 09, 2026
USD ($)
shares
Mar. 09, 2026
USD ($)
shares
Mar. 31, 2026
USD ($)
shares
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
shares
Feb. 06, 2026
USD ($)
Jun. 20, 2025
Feb. 28, 2025
Number of Reportable Segments       2          
Goodwill $ 9,725,000     $ 9,725,000   $ 0      
Deferred Consideration 8,151,000     8,151,000   0      
Equity Method Investment, Change in Fair Value       (2,302,000) $ 0        
Intangible Asset, Excluding Goodwill, Impairment Loss       0 0        
Accrued Liabilities, Current 2,325,000     2,325,000   1,697,000      
Short-Term Debt 6,540,000     6,540,000   $ 0      
Revenue from Contract with Customer, Excluding Assessed Tax       432,000 143,000        
Contract with Customer, Asset, after Allowance for Credit Loss $ 0     0          
Advertising Expense       $ 26,000 83,000        
Series X Preferred Stock [Member]                  
Preferred Stock, Shares Outstanding (in shares) | shares 0     0   0      
Software Upgrade Services [Member]                  
Revenue from Contract with Customer, Excluding Assessed Tax       $ 0 $ 0        
KardioNav, Inc. [Member]                  
Accrued Liabilities, Current $ 17,000     17,000          
Short-Term Debt 309,000     309,000          
May 2025 Notes [Member]                  
Notes Payable $ 1,400,000     $ 1,400,000          
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%  
KardioNav, Inc. [Member] | Chief Executive Officer and Chairman of the Board [Member]                  
Subsidiary, Ownership Percentage, Parent           10.00%      
KardioNav, Inc. [Member] | Certain Third Parties [Member]                  
Subsidiary, Ownership Percentage, Parent           33.00%      
Valuation Technique, If Converted Model [Member] | Measurement Input, Discount Rate [Member]                  
Deferred Consideration, Measurement Input 20.00% 20.00% 20.00% 20.00%          
FLYTE [Member]                  
Goodwill   $ 9,430,000 $ 9,430,000            
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares (in shares) | shares   5,778              
Deferred Consideration $ 8,200,000 $ 5,800,000 $ 5,800,000 $ 8,200,000     $ 5,300,000    
Equity Method Investment, Change in Fair Value $ 2,900,000                
FLYTE [Member] | Series D Preferred Stock [Member]                  
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares (in shares) | shares     11,028            
Preferred Stock, Stated Value   $ 1,000 $ 1,000            
FLYTE [Member]                  
Equity Method Investment, Ownership Percentage   19.98% 19.98%            
Equity Method Investment, Change in Fair Value       $ (2,300,000)          
Private Aviation [Member]                  
Goodwill   $ 9,700,000 $ 9,700,000            
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]                  
Number of Major Customers         3        
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer One [Member]                  
Concentration Risk, Percentage       12.00% 42.00%        
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Two [Member]                  
Concentration Risk, Percentage       10.00% 18.00%        
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Three [Member]                  
Concentration Risk, Percentage       10.00% 10.00%        
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Four [Member]                  
Concentration Risk, Percentage       10.00%          
Customer Concentration Risk [Member] | Accounts Receivable [Member]                  
Number of Major Customers           5      
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer One [Member]                  
Concentration Risk, Percentage       17.00%   27.00%      
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Two [Member]                  
Concentration Risk, Percentage       15.00%   15.00%      
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Customer Three [Member]                  
Concentration Risk, Percentage       12.00%          
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Three Customers [Member]                  
Concentration Risk, Percentage           10.00%