Accrued Liabilities (Changes in Accrued Product Warranties) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Accrued Liabilities [Abstract]
Warranties, beginning of period	$ 18,927	$ 20,156	$ 27,309	$ 20,130
Impact from adoption of ASC 606				594
Expense, net of recoveries		3,695	3,782	5,767
Expense, net of recoveries	8,115
Reductions for settlement of previous warranty liabilities	(5,177)	(2,012)	(9,454)	(4,549)
Foreign currency exchange rate changes	(95)	(159)	133	(262)
Warranties, end of period	$ 21,770	$ 21,680	$ 21,770	$ 21,680

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- Definition

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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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- Definition

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.

+ References

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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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Product Warranty Expense Recoveries

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