Goodwill and Intangible Assets Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Balance at September 30, 2019	$ 291,371
Amortization	(37,613)	$ (41,703)
Effect of foreign currency translation	(344)
Balance at March 31, 2020	$ 253,414

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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-Name Accounting Standards Codification
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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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-Publisher FASB
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