v3.26.1
Fair Value Measurement (Narrative) (Details)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Convertible promissory notes maturity terms which were amended post maturity, which were assumed to be 100%. The probability of default was determined in reference to a 1-year PD rate for a 'CCC+' rating at issuance, and a combination of 'CC' and 'CCC-' credit ratings at December 31, 2025 and 2024.  
Probability of default [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Convertible promissory notes, measurement input 75.00% 75.00%
Expected volatility [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Convertible promissory notes, measurement input 320.80%  
Expected volatility [Member] | Minimum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Convertible promissory notes, measurement input   220.40%
Expected volatility [Member] | Maximum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Convertible promissory notes, measurement input   247.80%
Discount for lack of marketability [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Convertible promissory notes, measurement input 10.00% 10.00%
Credit spread [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Convertible promissory notes, measurement input 22.28%  
Credit spread [Member] | Minimum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Convertible promissory notes, measurement input   22.95%
Credit spread [Member] | Maximum [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Convertible promissory notes, measurement input   22.95%