v3.26.1
Note 8 - Notes Payable and Convertible Notes Payable (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Dec. 08, 2023
Feb. 28, 2019
May 31, 2026
Aug. 31, 2025
May 31, 2022
Apr. 30, 2019
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2022
Unamortized Debt Issuance Expense             $ 916,000   $ 916,000        
Unrealized Gain (Loss) on Derivatives             (3,333,000) $ (439,000) (2,620,000) $ 708,000      
The 2019 Cecil Loan [Member] | Advance Cecil Inc. [Member]                          
Debt Instrument, Face Amount           $ 100,000              
Debt Instrument, Interest Rate, Stated Percentage           8.00%              
Phantom Shares for Potential Repayment (in shares)           1,199              
The 2019 MD Loan [Member] | Department of Housing and Community Development [Member]                          
Debt Instrument, Face Amount   $ 500,000                      
Debt Instrument, Interest Rate, Stated Percentage   8.00%                      
Phantom Shares for Potential Repayment (in shares)   5,995                      
The 2022 MD Loan [Member] | Department of Housing and Community Development [Member]                          
Debt Instrument, Face Amount         $ 3,000,000                
Debt Instrument, Interest Rate, Stated Percentage         6.00%                
Proceeds from Loans         $ 1,000,000                
Debt Instrument, Unfunded Balance         2,000,000                
Debt Instrument, Monthly Interest-only Payments, Maximum Amount, First Eighteen Installments         15,000                
Debt Instrument, Monthly Principal and Interest Payment, for the Next Thirty Installments         33,306                
Interest Payable             50,000   50,000   $ 50,000    
Debt Issuance Costs, Gross         $ 31,000                
The 2022 DHCD Loan [Member] | Department of Housing and Community Development [Member]                          
Debt Instrument, Face Amount $ 5,000,000                       $ 5,000,000
Debt Instrument, Interest Rate, Stated Percentage                         6.00%
Interest Payable             300,000   300,000   300,000    
Debt Instrument, Convertible, Minimum Increment of Principal for Exercise $ 1,000,000                        
Debt Conversion, Conversion Price, Percent of 30-day Trailing Volume-weighted Average Sale Price of Common Stock 97.00%                        
Debt Instrument, Convertible, Conversion Price (in dollars per share) $ 80                        
Unamortized Debt Issuance Expense             $ 100,000   $ 100,000        
Debt Instrument, Interest Rate, Effective Percentage             5.99%   5.99%        
The 2024 S S C P Notes [Member]                          
Debt Instrument, Face Amount                       $ 10,000,000  
Debt Instrument, Interest Rate, Stated Percentage                       12.00%  
Interest Payable             $ 1,200,000   $ 1,200,000   500,000    
Debt Instrument, Convertible, Conversion Price (in dollars per share)             $ 5.668   $ 5.668        
Debt Issuance Costs, Net       $ 700,000               $ 1,500,000  
Unrealized Gain (Loss) on Derivatives     $ (1,600,000)                    
Debt Instrument, Covenant, Cash and Certain Cash Equivalents, Minimum             $ 2,000,000   $ 2,000,000        
Debt Instrument, Convertible, Maximum Conversion Amount, Percentage of Principal Oustanding             65.00%   65.00%        
Debt Instrument, Convertible, Accrued Interest Conversion (in dollars per share)             $ 4.44   $ 4.44        
Debt Instrument, Cash Payment in the Event of Change in Control or Restructuring Process, Percentage Of Principal Outstanding                 115.00%        
The 2024 S S C P Notes [Member] | Derivative Instrument Related to Senior Secured Convertible Promissory Notes [Member]                          
Debt Instrument, Interest Rate, Effective Percentage             18.08%   18.08%        
Derivative Liability                       $ 1,400,000  
The 2025 S S C P Notes [Member]                          
Debt Instrument, Face Amount       $ 1,500,000                  
Debt Instrument, Interest Rate, Stated Percentage       12.00%                  
Interest Payable             $ 200,000   $ 200,000   100,000    
Debt Instrument, Convertible, Conversion Price (in dollars per share)             $ 4.44   $ 4.44        
Debt Issuance Costs, Net       $ 200,000                  
Unrealized Gain (Loss) on Derivatives     $ (200,000)                    
Debt Instrument, Periodic Payment, Principal       $ 150,000                  
Debt Instrument, Convertible, Maximum Conversion Amount, Percentage of Principal Oustanding             65.00%   65.00%        
Debt Instrument, Convertible, Maximum Conversion Amount, Amount of Principal Outstanding             $ 975,000   $ 975,000        
Debt Instrument, Cash Payment in the Event of Change in Control or Restructuring Process, Percentage Of Principal Outstanding                 115.00%        
The 2025 S S C P Notes [Member] | Derivative Instrument Related to Senior Secured Convertible Promissory Notes [Member]                          
Debt Instrument, Interest Rate, Effective Percentage             18.78%   18.78%        
Derivative Liability                     $ 200,000    
The 2024 and 2025 S S C P Notes [Member]                          
Debt Instrument, Collateral Deficiency Fee, Percentage             10.00%   10.00%        
Debt Instrument, Registration Fee Penalty Amount, Percentage of Face Value of Debt             2.00%   2.00%        
Debt Instrument, Aggregate Registration Fee Penalty Amount, Maximum Percentage of Face Value of Debt             10.00%   10.00%