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Convertible Notes (Tables)
 12 Months Ended
Dec. 31, 2022
Debt Disclosure [Abstract]  
Schedule of convertible notes
The Company’s convertible notes are shown in the following table:
As of December 31,
(In thousands)20222021
2023 Notes$10,381 $172,500 
Unamortized discount — 2023 Notes (1)
— (8,266)
Unamortized debt issuance costs — 2023 Notes(3)(547)
Total convertible notes10,378 163,687 
Less current portion10,378 163,687 
Total long-term convertible notes$— $— 
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(1)    On January 1, 2022, the Company adopted ASU No. 2020-06. Refer to Note 3, “Recent Accounting Pronouncements,” for additional information.
Schedule of interest expense on notes
Interest expense related to the convertible notes for the years ended December 31, 2022, 2021 and 2020 was as follows:
Years Ended December 31,
(In thousands)202220212020
2023 Notes coupon interest at a rate of 1.375%
$610 $2,372 $2,372 
2023 Notes amortization of discount and debt issuance cost194 7,656 7,243 
Total interest expense on convertible notes
$804 $10,028 $9,615