Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Schedule of Quantitative Information) (Details)

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Fair Value Measurements (Schedule of Quantitative Information) (Details) - item
6 Months Ended 12 Months Ended
Mar. 31, 2024
Sep. 30, 2023
Minimum [Member] | Estimated Change Of Control Dates [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Estimated change of control dates 2024-12 2024-12
Minimum [Member] | Discount Rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Significant unobservable input 0.151 0.141
Minimum [Member] | Probability Of Change Of Control [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Significant unobservable input 0.20 0.20
Maximum [Member] | Estimated Change Of Control Dates [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Estimated change of control dates 2026-12 2026-12
Maximum [Member] | Discount Rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Significant unobservable input 0.163 0.151
Maximum [Member] | Probability Of Change Of Control [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Significant unobservable input 0.90 0.90