Accrued Liabilities (Changes in Accrued Product Warranties) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Accrued Liabilities
Warranties, beginning of period	$ 20,130	$ 13,597	$ 15,993
Increases due to acquisition of L'Orange		6,045
Impact from adoption of ASC 606 (Note 3)	705
Expense, net of recoveries	14,559	5,158	9,135
Reductions for settling warranties	(7,540)	(4,413)	(11,692)
Foreign currency exchange rate changes	(545)	(257)	161
Warranties, end of period	$ 27,309	$ 20,130	$ 13,597

No definition available.

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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.

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

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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 (decrease) in the standard and extended product warranty accrual from changes in estimates attributable to preexisting product warranties.

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The expense charged against earnings for the period pertaining to standard and extended warranties on the entity's goods and services granted to customers.

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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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