Convertible Note - Liability and Equity Components of the Convertible Notes (Details) - Convertible Debt - the “Notes” - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Principal amount	$ 575,000	$ 575,000
Unamortized discount	0	(132,797)
Unamortized issuance costs	(13,612)	(12,298)
Net carrying amount of liability component	561,388	429,905
Conversion feature	0	136,402
Issuance costs	0	(3,928)
Net carrying amount of equity component	0	132,474
Estimated fair value	$ 476,789	$ 450,437

Debt Instrument, Convertible, Carrying Amount Of Equity Component, Gross

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- Definition

Debt Issuance Costs, Equity Component

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No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

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

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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.

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Amount, after accumulated amortization, of debt discount.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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