Long-Term Debt (Tables)

6 Months Ended

Mar. 31, 2023

Debt Disclosure [Abstract]

Schedule of Long-Term Debt

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

	March 31, 2023			September 30, 2022
3.00% Convertible Senior Notes due 2025, net of unamortized discount of $0 and $11,264, respectively, and deferred issuance costs of $2,546 and $2,832, respectively. Effective interest rate 3.70% and 6.29%, respectively.	$	172,454		$	160,904
Senior Credit Facilities, net of unamortized discount of $1,390 and $1,310, respectively, and deferred issuance costs of $127 and $158, respectively. Effective interest rate 8.41% and 5.37%, respectively.		104,733			109,470
Total debt	$	277,187		$	270,374
Less: current portion		(12,500	)		(10,938	)
Total long-term debt	$	264,687		$	259,436

Summary of Maturities of Borrowing Obligations

The following table summarizes the maturities of our borrowing obligations as of March 31, 2023 (in thousands):

Fiscal Year	Convertible Senior Notes			Senior Facilities			Total
2023	$	—		$	6,250		$	6,250
2024		—			12,500			12,500
2025		175,000			87,500			262,500
Total before unamortized discount and issuance costs and current portion	$	175,000		$	106,250		$	281,250
Less: unamortized discount and issuance costs		(2,546	)		(1,517	)		(4,063	)
Less: current portion of long-term debt		—			(12,500	)		(12,500	)
Total long-term debt	$	172,454		$	92,233		$	264,687

Schedule of Interest Expense Related to Notes

The interest expense recognized related to the Notes for the three and six months ended March 31, 2023 and 2022 was as follows (dollars in thousands):

	Three Months Ended March 31,				Six Months Ended March 31,
	2023		2022		2023		2022
Contractual interest expense	$	1,294	$	1,294	$	2,616	$	2,616
Amortization of debt discount		-		919		-		1,843
Amortization of issuance costs		276		231		556		463
Total interest expense related to the Notes	$	1,570	$	2,444	$	3,172	$	4,922