Product Warranties (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Product Warranty Liability [Line Items]
Product Warranty Accrual, Current	$ 8,138	$ 6,115
Product warranties	2,966	1,724
Other Current Liabilities
Product Warranty Liability [Line Items]
Product Warranty Accrual, Current	8,138	6,115	$ 4,922	$ 8,907
Warranty provision for sales	6,939	4,738	5,745
Settlement of warranty claims	(4,720)	(4,890)	(6,529)
Foreign currency translation and other	(196)	550	63
Standard and Extended Product Warranty Accrual, Sale of Business	0	(795)	(3,264)
Other Noncurrent Liabilities
Product Warranty Liability [Line Items]
Product warranties	2,966	1,724	2,332	$ 3,360
Warranty provision for sales	2,065	701	1,915
Settlement of warranty claims	(830)	(1,170)	(999)
Foreign currency translation and other	7	(274)	(350)
Standard and Extended Product Warranty Accrual, Sale of Business	$ 0	$ (135)	$ (1,594)

Standard and Extended Product Warranty Accrual, Sale of Business

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer) for estimated claims under standard and extended warranty protection rights granted to customers.

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Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty.

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Amount of increase in the standard and extended product warranty accrual from warranties issued.

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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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Amount of foreign currency translation gain (loss) which decreases (increases) the standard and extended product warranty accrual.

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