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CONVERTIBLE SENIOR NOTES (Tables)

12 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Schedule of Carrying Values of Company's 2026 Notes

The carrying values of the 0.75% convertible notes due 2026 issued by the Company in an aggregate principal amount of $155.3 million (the “2026 Notes”) are as follows (amounts in thousands):

			September 30, 2023			September 30, 2022
2026 Notes:
Principal amount			$	155,250		$	155,250
Less: unamortized discount and issuance costs, net of amortization			(19,734)			(27,280)
Carrying amount			$	135,516		$	127,970

Schedule of Interest Costs Recognized Related to 2026 Notes

The following table presents the total amount of interest cost recognized relating to the 2026 Notes for the twelve months ended September 30, 2023 and 2022 (amounts in thousands):

						2023						2022
Contractual interest expense						$	1,615					$	1,179
Amortization of debt discount and issuance costs						7,546						7,053
Total interest expense recognized						$	9,161					$	8,232

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Interest Expense

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Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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