Nominal or face amount used to calculate payments on the derivative liability.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

Name:	us-gaap_DerivativeLiabilityNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

Fair Value of Financial Instruments - Narrative (Details) - USD ($)	Mar. 31, 2020	Sep. 30, 2021
Convertible Debt \| 2026 Notes: \| Level 2
Derivative [Line Items]
Long-term debt, fair value		$ 794,356,000
Convertible Debt \| 2027 Notes: \| Level 2
Derivative [Line Items]
Long-term debt, fair value		$ 585,258,000
Interest Rate Swap \| Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	$ 200,000,000
Term of contract (in years)	10 years