Investment in Derivative Instruments - Income Statement Classification (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized Gain (Loss)	$ 2,619	$ 1,936
Unrealized Gain (Loss)	(226)	(1,007)
Total Gain (Loss)	2,393	929
Cost of revenues
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized Gain (Loss)	(19)	601
Unrealized Gain (Loss)	(226)	(1,007)
Total Gain (Loss)	(245)	(406)
Interest expense, net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Realized Gain (Loss)	2,638	1,335
Unrealized Gain (Loss)	0	0
Total Gain (Loss)	$ 2,638	$ 1,335