v3.26.1
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
12 Months Ended
Jul. 26, 2024
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
AccountingPolicies [Line Items]        
Cash equivalents   $ 4,500,000 $ 11,800,000  
Cash, FDIC insured limits   250,000    
Cash, SIPC insured limits   500,000    
Unsegregated cash   8,700,000    
Cash uninsured limits   7,200,000 4,300,000  
Revolving credit, maximum borrowing capacity   2,000,000.0    
Deposits   2,000,000.0    
Cash segregated in compliance with regulations   2,331,000 844,000  
Clearing deposits   2,000,000 1,738,000  
Prepaid and other expenses   433,000 513,000  
Intangible assets acquired   44,000 44,000  
Prepaid professional fees   50,000 50,000  
Security deposit   19,000 19,000  
Prepaid insurance   169,000 160,000  
Various prepaid expense   130,000 150,000  
Other assets   21,000 90,000  
Net unrealized gain (loss) on investment securities   (246,000) (275,000) [1]  
Impairment of securities   200,000 [2] $ 50,000
Research and development costs   0 2,800,000  
Grant drawdowns   0 2,000,000.0  
Net of grant received   0 3,400,000  
Patent and licensing legal and filing fees and costs   54,000 296,000  
Revolving Credit Facility [Member]        
AccountingPolicies [Line Items]        
Revolving credit, maximum borrowing capacity $ 2,000,000.0      
Deposits   2,100,000 2,100,000  
Maturity date Jul. 26, 2025      
Variable rate 2.25%      
Interest rate 7.75%      
Credit non-usage fee $ 5,000      
Outstanding indebtedness   0 0  
Interest payable   $ 0 $ 0  
SAFE [Member]        
AccountingPolicies [Line Items]        
Impairment of securities       $ 100,000
[1] Includes unrealized gains and losses on securities held by the broker-dealer.
[2] Includes impairment loss of assets from the reduced fair value of the asset.