SUPPLEMENTAL BALANCE SHEET INFORMATION - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022
Prepaid expenses and other current assets
Advances to suppliers	$ 29,195	$ 30,292
Income tax receivable	1,943	366
Prepaid research models	2,812	3,575
Other	6,529	8,250
Prepaid expenses and other current assets	$ 40,479	$ 42,483

Information related to prepaid research models.

No definition available.

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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.

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- Definition

Amount of current assets classified as other.

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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.

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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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