Convertible Senior Notes (Tables)

12 Months Ended

Dec. 31, 2022

Debt Disclosure [Abstract]

Convertible Debt Balances

The Notes consisted of the following balances reported in the Consolidated Balance Sheets as of December 31, 2022 and 2021:

	December 31,
	2022 (2)		2021
	(In thousands)
Liability:
Principal amount	$	575,000	$	575,000
Unamortized discount	—		(77,136)
Unamortized debt issuance costs	(8,429)		(9,712)
Convertible senior notes, liability component (1)	$	566,571	$	488,152
Convertible senior notes, equity component	$	—	$	72,732

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(1)    Classified as a long-term liability as of December 31, 2022, and a current liability as of December 31, 2021, in the Consolidated Balance Sheets.

(2)    Refer to Note 1, Organization and Summary of Significant Accounting Policies, for further information regarding the impact of the adoption of ASU 2020-06, effective January 1, 2022.

Summary of the Components of Interest Expense

The following table summarizes the components of interest expense resulting from the Notes recognized in interest and other income (expense), net in the Consolidated Statements of Operations for the years ended December 31, 2022, 2021 and 2020:

	Year Ended December 31,
	2022 (1)		2021		2020
	(In thousands)
Contractual coupon interest	$	1,438	$	1,438	$	379
Amortization of discount	$	—	$	18,608	$	4,766
Amortization of debt issuance costs	$	3,066	$	2,343	$	600

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(1)    Refer to Note 1, Organization and Summary of Significant Accounting Policies, for further information regarding the impact of the adoption of ASU 2020-06, effective January 1, 2022.