Summary of Significant Accounting Policies - Additional Information (Details)	9 Months Ended	12 Months Ended
	Jun. 30, 2022 USD ($)	Sep. 30, 2022 USD ($) Customer Unit Segment	Sep. 30, 2021 USD ($) Customer	Sep. 30, 2020 USD ($)	Jun. 02, 2020
Summary Of Significant Accounting Policies [Line Items]
Goodwill impairment charge	$ 0	$ 213,700,000	$ 0	$ 0
Number of operating segment | Segment		1
Number of reporting unit | Unit		1
Impairment of long-lived asset group, disposition		$ 0	0	0
Estimate fair value	995,000,000	713,000,000.0
Reporting unit, carrying value	950,000,000
Reporting unit, amount of fair value in excess of carrying amount	$ 45,000,000
Reporting Unit, Percentage of fair value in excess of carrying amount	5.00%
Undistributed earnings in our foreign subsidiaries are expected		0	0
Foreign currency transaction gain (loss)		$ 100,000	(1,700,000)	$ 2,400,000
Operating lease, existence of option to extend		true
Operating lease, option to extend		Some of our leases include options to extend or terminate the lease prior to the end of the agreed upon lease term. For purposes of calculating lease liabilities, lease terms include options to extend or terminate the lease when it is reasonably certain that we will exercise such options.
Operating lease, existence of option to terminate		true
Operating lease, option to terminate		Some of our leases include options to extend or terminate the lease prior to the end of the agreed upon lease term. For purposes of calculating lease liabilities, lease terms include options to extend or terminate the lease when it is reasonably certain that we will exercise such options.
Deferred tax assets valuation allowance		$ 126,860,000	$ 12,209,000
Netherlands
Summary Of Significant Accounting Policies [Line Items]
Deferred tax assets valuation allowance	$ 107,600,000
3.00% Convertible Senior Notes Due 2025
Summary Of Significant Accounting Policies [Line Items]
Debt instrument conversion ratio		26.7271
Conversion of notes to common stock per principal amount		$ 1,000
Debt instrument, interest rate		3.00%			3.00%
Minimum
Summary Of Significant Accounting Policies [Line Items]
Operating lease remaining term		1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
Operating lease remaining term		6 years
Concentration of Credit Risk | Accounts Receivable, Net
Summary Of Significant Accounting Policies [Line Items]
Number of major customers | Customer		1	1
Concentration of Credit Risk | Customer One | Accounts Receivable, Net
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage		17.40%	12.10%