Convertible Senior Notes (Tables)

6 Months Ended

Jun. 30, 2022

Debt Disclosure [Abstract]

Convertible Debt Balances

The Notes consisted of the following balances reported in the Condensed Consolidated Balance Sheets as of June 30, 2022 and December 31, 2021:

	June 30, 2022 (2)		December 31, 2021
	(In thousands)
Liability:
Principal amount	$	575,000	$	575,000
Unamortized discount	—		(77,136)
Unamortized debt issuance costs	(9,965)		(9,712)
Convertible senior notes, liability component (1)	$	565,035	$	488,152
Convertible senior notes, equity component	$	—	$	72,732

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(1)    Classified as a long-term liability as of June 30, 2022, and a current liability as of December 31, 2021, in the Condensed 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 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 Condensed Consolidated Statements of Operations for the three and six months ended June 30, 2022 and 2021:

	Three Months Ended June 30,				Six Months Ended June 30,
	2022 (1)		2021		2022 (1)		2021
	(In thousands)
Contractual coupon interest	$	359	$	359	$	719	$	719
Amortization of discount	$	—	$	4,624	$	—	$	9,195
Amortization of debt issuance costs	$	766	$	583	$	1,530	$	1,158

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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.