Restructuring Charges - Narrative (Details) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($) employee	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)
Restructuring Charges [Abstract]
Number of employees in reduction of force program \| employee		75
Restructuring charges \| $	$ 0	$ 7,800	$ 0	$ 7,800	$ 0

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration