Long-Term Debt (Tables)

6 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Schedule of Long-Term Debt

Long-term debt consisted of the following (in thousands):

March 31, 2024
Description	Maturity Date	Convertible Debt Coupon Rate	Effective Interest Rate	Principal		Unamortized Discount			Deferred Issuance Costs			Carrying Value
2025 Modified Notes	6/1/2025	3.00%	3.70%	$	87,500	$	-		$	(701	)	$	86,799
2025 Modified Notes	7/1/2028	1.50%	8.65%		87,500		(3,294	)		(12,574	)		71,632
2028 Notes	7/1/2028	1.50%	1.91%		122,500		-			(2,041	)		120,459
Total debt				$	297,500	$	(3,294	)	$	(15,316	)		278,890
Less: current portion of long-term debt													—
Total long-term debt												$	278,890

September 30, 2023
Description	Maturity Date	Convertible Debt Coupon Rate	Effective Interest Rate	Principal		Unamortized Discount			Deferred Issuance Costs			Carrying Value
2025 Modified Notes	6/1/2025	3.00%	3.70%	$	87,500	$	-		$	(992	)	$	86,508
2025 Modified Notes	7/1/2028	1.50%	8.75%		87,500		(3,796	)		(14,490	)		69,214
2028 Notes	7/1/2028	1.50%	1.91%		122,500		-			(2,271	)		120,229
Total debt				$	297,500	$	(3,796	)	$	(17,753	)		275,951
Less: current portion of long-term debt													—
Total long-term debt												$	275,951

Summary of Maturities of Borrowing Obligations

The following table summarizes the maturities of our borrowing obligations as of March 31, 2024 (in thousands):

Fiscal Year	2028 Notes			2025 Modified Notes			Total
2024	$	—		$	—		$	—
2025		—			87,500			87,500
2026		—			—			—
2027		—			—			—
2028		122,500			87,500			210,000
Thereafter		—			—			—
Total before unamortized discount and issuance costs and current portion	$	122,500		$	175,000		$	297,500
Less: unamortized discount and issuance costs		(2,041	)		(16,569	)		(18,610	)
Less: current portion of long-term debt		—			—			—
Total long-term debt	$	120,459		$	158,431		$	278,890

Schedule of Interest Expense Related to Notes

The interest expense recognized related to the Notes for the three and six months ended March 31, 2024 and 2023 was as follows (dollars in thousands):

	Three Months Ended March 31,				Six Months Ended March 31,
	2024		2023		2024		2023
Contractual interest expense	$	1,439	$	1,294	$	2,881	$	2,616
Amortization of debt discount		251		-		502		-
Amortization of issuance costs		1,219		276		2,436		556
Total interest expense related to the Notes	$	2,909	$	1,570	$	5,819	$	3,172