Annual report [Section 13 and 15(d), not S-K Item 405]

Note 4 - Fair Value Measurements - Schedule of Valuation Approach and Technique (Details)

v3.25.3
Note 4 - Fair Value Measurements - Schedule of Valuation Approach and Technique (Details) - Fair Value, Inputs, Level 3 [Member] - Embedded Derivative Financial Instruments [Member] - Valuation, Scenario-based [Member]
Sep. 30, 2025
Sep. 30, 2024
Measurement Input, Probability of Change of Control [Member]    
Measurement input 1  
Maximum [Member] | Measurement Input, Discount Rate [Member]    
Measurement input   0.123
Maximum [Member] | Measurement Input, Probability of Change of Control [Member]    
Measurement input   0.90