Debt (Tables)

9 Months Ended

Jun. 30, 2024

Debt Disclosure [Abstract]

Schedule of Long Term Debt Instruments

The following table presents the Company's debt instruments outstanding:

	June 30, 2024						June 30, 2023						September 30, 2023
(in thousands)	Gross Amount		Debt Issuance Costs		Carrying Amount		Gross Amount		Debt Issuance Costs		Carrying Amount		Gross Amount		Debt Issuance Costs		Carrying Amount
2029 Convertible Notes	$	230,000	$	(6,002)	$	223,998	$	230,000	$	(6,970)	$	223,030	$	230,000	$	(6,716)	$	223,284
2025 Convertible Notes	103,373		(433)		102,940		103,373		(940)		102,433		103,373		(810)		102,563
2024 Convertible Notes	34,389		(3)		34,386		34,389		(166)		34,223		34,389		(124)		34,265
Total	$	367,762	$	(6,438)	$	361,324	$	367,762	$	(8,076)	$	359,686	$	367,762	$	(7,650)	$	360,112
Less current portion	137,762		(436)		137,326		—		—		—		34,389		(124)		34,265
Total long-term debt	$	230,000	$	(6,002)	$	223,998	$	367,762	$	(8,076)	$	359,686	$	333,373	$	(7,526)	$	325,847

Schedule of Maturities of Long-Term Debt

The following table presents the Company’s contractual maturities related to the debt instruments as of June 30, 2024:

	Schedule of Contractual Maturities
(in thousands)	2029 Convertible Notes		2025 Convertible Notes		2024 Convertible Notes		Total
Remaining 2024	$	—	$	—	$	34,389	$	34,389
Fiscal 2025	—		103,373		—		103,373
Fiscal 2026	—		—		—		—
Fiscal 2027	—		—		—		—
Fiscal 2028	—		—		—		—
Thereafter	230,000		—		—		230,000
Total long-term debt	$	230,000	$	103,373	$	34,389	$	367,762

Schedule of Interest Expense

The following table presents the Company’s interest expense related to the Convertible Notes for the three and nine months ended June 30, 2024 and 2023:

	Three Months Ended June 30,				Nine Months Ended June 30,
(in thousands)	2024		2023		2024		2023
2029 Convertible Notes:
Contractual interest expense	$	2,156	$	2,157	$	6,469	$	4,744
Amortization of deferred financing costs	242		239		714		488
Total interest expense	$	2,398	$	2,396	$	7,183	$	5,232
2025 Convertible Notes:
Contractual interest expense	$	613	$	614	$	1,841	$	2,170
Amortization of deferred financing costs	123		121		377		429
Gain on extinguishment	—		—		—		(5,389)
Total interest expense	$	736	$	735	$	2,218	$	(2,790)
2024 Convertible Notes:
Contractual interest expense	$	248	$	247	$	742	$	1,370
Amortization of deferred financing costs	40		39		121		218
Loss on extinguishment	—		—		—		8,935
Total interest expense	$	288	$	286	$	863	$	10,523