v3.26.1
Summary of Significant Accounting Policies (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Summary of Significant Accounting Policies [Line Items]          
Restricted cash $ 3,930,000   $ 3,930,000 $ 0  
Customer deposits 968,000   391,000 1,115,000  
Recognized revenue 100,000 $ 531,000 724,000 2,442,000  
Backlog relating to remaining performance obligations 134,700,000        
Stock-based compensation expense for employees 950,000 435,000 939,000 640,000  
Stock-based compensation for directors 14,000 39,000 108,000 157,000  
Expenditures for repairs and improvements     10,000    
Contract costs receivable     296,000  
Customer deposits balance         $ 3,557,000
Freight expenses     52,000 67,000  
Director [Member]          
Summary of Significant Accounting Policies [Line Items]          
Stock-based compensation for directors 429,000 39,000 108,000 157,000  
Long-Term Agreements [Member]          
Summary of Significant Accounting Policies [Line Items]          
Backlog relating to remaining performance obligations 134,700,000   136,800,000    
Share-Based Payment Arrangement, Employee [Member]          
Summary of Significant Accounting Policies [Line Items]          
Stock-based compensation expense for employees $ 535,000 $ 435,000 $ 939,000 $ 640,000