Accrued Liabilities (Changes in Restructuring Reserve Activity) (Details) - Employee Severance [Member] - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period	$ 3,395	$ 507
Cash receipts (payments)	1,742	228
Foreign currency exchange rate changes	45
Non-cash activity	(102)	(24)
Restructuring charges, end of period	1,596	255
Duarte Relocation Restructuring Charge Reserve
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period		440
Cash receipts (payments)		228
Restructuring charges, end of period		212
Industrial Turbomachinery Business Realignment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period		67
Non-cash activity		(24)
Restructuring charges, end of period		$ 43
Covid-19 Pandemic [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges, beginning of period	3,395
Cash receipts (payments)	1,742
Foreign currency exchange rate changes	45
Non-cash activity	(102)
Restructuring charges, end of period	$ 1,596

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
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-Section 50
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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+ References

No definition available.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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