Product Warranties (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018	Sep. 30, 2016
Product Warranty Liability [Line Items]
Product Warranty Accrual, Current	$ 4,922	$ 8,907
Product warranties	2,332	3,360
Other Current Liabilities [Member]
Product Warranty Liability [Line Items]
Product Warranty Accrual, Current	4,922	8,907	$ 11,164	$ 8,907	$ 16,860
Business combination recognition	0	0	285
Warranty provision for sales	5,745	4,930	5,970
Settlement of warranty claims	(6,529)	(6,836)	(11,817)
Foreign currency translation and other	63	(351)	(134)
Amounts reclassified to liabilities held for sale	(3,264)	0	0
Other Noncurrent Liabilities [Member]
Product Warranty Liability [Line Items]
Product warranties	2,332	3,360	6,110	$ 3,360	$ 6,449
Business combination recognition	0	0	0
Warranty provision for sales	1,915	654	727
Settlement of warranty claims	(999)	(3,132)	(852)
Foreign currency translation and other	(350)	(272)	(214)
Amounts reclassified to liabilities held for sale	$ (1,594)	$ 0	$ 0

Disposal Group, Including Discontinued Operation, Product Warranty, Current

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Amount of increase in the standard and extended product warranty accrual from a business acquisition.

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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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