v3.26.1
Note 2 - Summary of Significant Accounting Policies (Details Textual)
 1 Months Ended 3 Months Ended 12 Months Ended
Nov. 05, 2025
USD ($)
Nov. 04, 2025
USD ($)
Mar. 07, 2025
USD ($)
$ / shares
shares
Nov. 05, 2024
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
Nov. 30, 2022
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
shares
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2022
USD ($)
Dec. 31, 2020
USD ($)
shares
Oct. 27, 2025
USD ($)
Mar. 06, 2024
USD ($)
Dec. 31, 2023
USD ($)
May 31, 1988
USD ($)
Net Income (Loss) Attributable to Parent               $ (34,151,000) $ (31,140,000)            
Working Capital             $ 2,900,000 2,900,000              
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation               (18,930,000) (21,532,000)            
Proceeds from Issuance of Debt               $ 15,000,000 20,000,000            
Number of Operating Segments               2              
Number of Reportable Segments               2              
Revenues               $ 16,313,000 9,608,000            
Deferred Revenue                 $ 1,200,000            
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares                     0        
Weighted Average Number of Shares Outstanding, Diluted, Adjustment (in shares) | shares               10,802,000 9,861,000            
Capitalized Interest Costs, Including Allowance for Funds Used During Construction             75,000                
Goodwill, Ending Balance             5,714,000 $ 5,714,000 $ 5,714,000           $ 7,006,000
Goodwill Amortized Portion                     $ 3,193,000        
Goodwill, Impairment Loss                   $ 0          
Impairment of Intangible Assets, Finite-Lived               0              
Debt Discount, Addition               8,000,000 4,700,000            
Interest Paid, Excluding Capitalized Interest, Operating Activity               1,700,000              
Dividends Payable, Current             $ 1,265,000 1,265,000 1,288,000            
Capital Expenditures Incurred but Not yet Paid               $ 2,500,000              
Stock Issued During Period, Shares, Issued to Lenders (in shares) | shares               975,000              
Stock Issued During Period, Value, Issued to Lenders               $ 5,128,000 481,000            
Income Taxes Paid               $ 11,000 11,000            
ATEC Acquisition [Member]                              
Goodwill, Acquired During Period           $ 1,900,000                  
Land, Buildings and Improvements [Member] | Minimum [Member]                              
Property, Plant and Equipment, Useful Life (Year)             5 years 5 years              
Land, Buildings and Improvements [Member] | Maximum [Member]                              
Property, Plant and Equipment, Useful Life (Year)             45 years 45 years              
Machinery and Equipment [Member] | Minimum [Member]                              
Property, Plant and Equipment, Useful Life (Year)             5 years 5 years              
Machinery and Equipment [Member] | Maximum [Member]                              
Property, Plant and Equipment, Useful Life (Year)             15 years 15 years              
General and Administrative Expense [Member]                              
Share-Based Payment Arrangement, Expense               $ 5,300,000 4,600,000            
Intersegment Eliminations [Member]                              
Revenues               $ 0 $ 0            
November 2024 Direct Offering [Member] | Certain Institutional and Individual Investors [Member]                              
Stock Issued During Period, Shares, New Issues (in shares) | shares       7,000,000                      
Shares Issued, Price Per Share (in dollars per share) | $ / shares       $ 3.34                      
Proceeds from Issuance of Common Stock, Gross       $ 23,400,000                      
Proceeds from Issuance of Common Stock, Net       $ 22,100,000                      
March 2025 Direct Offering [Member] | Certain Institutional and Individual Investors [Member]                              
Stock Issued During Period, Shares, New Issues (in shares) | shares     5,715,000                        
Shares Issued, Price Per Share (in dollars per share) | $ / shares     $ 3.5                        
Proceeds from Issuance of Common Stock, Gross     $ 20,000,000                        
Proceeds from Issuance of Common Stock, Net     $ 18,300,000                        
Senior Secured Convertible Terms Loans [Member]                              
Debt Instrument, Face Amount                         $ 20,000,000    
Secured Non Convertible Terms Loans [Member]                              
Debt Instrument, Face Amount                         21,200,000 $ 20,000,000  
Convertible Loans [Member]                              
Debt Instrument, Face Amount                         $ 16,000,000    
Lytton Agreement [Member]                              
Debt Instrument, Face Amount                       $ 51,000,000      
Proceeds from Issuance of Debt $ 15,000,000 $ 15,000,000                          
Lytton Agreement [Member] | Subsequent Event [Member]                              
Proceeds from Issuance of Debt         $ 15,000,000