Accounts payable and Other noncurrent liabilities - Narrative (Details) - Vendor Agreement - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2023	Sep. 30, 2022
Accounts payable and other noncurrent liabilities
Imputed interest rate	5.50%
Interest expense	$ 229	$ 260
Payable to vendor	$ 3,300	$ 16,100
Percentage of accounts payable and noncurrent liabilities	26.00%	63.00%

Percentage of accounts payable and noncurrent liabilities.

No definition available.

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- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.

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- Definition

Reflects the effective interest rate as of the balance sheet date on interest-bearing trade payables.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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