SUPPLEMENTAL BALANCE SHEET INFORMATION - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Prepaid Expense and Other Assets, Current [Abstract]
Advances to suppliers	$ 19,247	$ 30,292
Prepaid research models	4,300	3,575
Tax-related receivables	1,813	366
Note receivable	1,226	0
Other	6,822	8,250
Prepaid expenses and other current assets	$ 33,408	$ 42,483

Information related to prepaid research models.

No definition available.

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- Definition

Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable classified as current. Excludes net investment in lease.

+ References

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- Definition

Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Amount of current assets classified as other.

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- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

+ References

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- References

No definition available.

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- Definition

Amount of consideration paid in advance for supplies that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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