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Borrowings - Schedule of Debt Issuance Costs (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Sep. 30, 2024
Schedule of Debt Issuance Costs [Line Items]    
Aggregate Principal Available [1] $ 67,061 $ 68,588
Principal Amount Outstanding 138,761 137,234
Carrying Value 137,435 135,724
Fair Value 135,357 131,714
2028 Notes [Member]    
Schedule of Debt Issuance Costs [Line Items]    
Aggregate Principal Available [1] 57,500 57,500
Principal Amount Outstanding 57,500 57,500
Carrying Value 56,310 56,143
Fair Value 54,096 51,980
2028 Promissory Note [Member]    
Schedule of Debt Issuance Costs [Line Items]    
Aggregate Principal Available [1] 1,661 1,661
Principal Amount Outstanding 1,661 1,661
Carrying Value 1,525 1,508
Fair Value 1,661 1,661
Revolving Credit Facility [Member]    
Schedule of Debt Issuance Costs [Line Items]    
Aggregate Principal Available [1] 7,900 9,427
Principal Amount Outstanding 79,600 78,073
Carrying Value 79,600 78,073
Fair Value $ 79,600 $ 78,073
[1] For the 2028 Notes and 2028 Promissory Note, this represents the total principal amount and for the Revolving Credit Facility, this represents the undrawn principal amount.