Convertible Senior Notes - Net Carrying Value Of the Equity (Details) - Senior Notes Due 2025 - Convertible Notes Payable - USD ($) $ in Thousands	Mar. 31, 2021	Apr. 14, 2020
Line of Credit Facility [Line Items]
Proceeds allocated to the conversion option (debt discount)	$ 63,270	$ 230,000
Less: Issuance costs	(2,057)
Net carrying amount	$ 61,213

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870

Name:	us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant