v3.26.1
9. Fair Value Measurements - Warrants Measured at Fair Value (Details) - USD ($)
Mar. 31, 2026
Dec. 31, 2025
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Warrants and Rights Outstanding $ 12,000 $ 14,000
Derivative Liability 462,000 508,000
[custom:WarrantAndDerivativeLiability-0] 474,000 522,000
Fair Value, Inputs, Level 1 [Member]    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Warrants and Rights Outstanding
Derivative Liability
[custom:WarrantAndDerivativeLiability-0]
Fair Value, Inputs, Level 2 [Member]    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Warrants and Rights Outstanding
Derivative Liability
[custom:WarrantAndDerivativeLiability-0]
Fair Value, Inputs, Level 3 [Member]    
Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items]    
Warrants and Rights Outstanding 12,000 14,000
Derivative Liability 462,000 508,000
[custom:WarrantAndDerivativeLiability-0] $ 474,000 $ 522,000