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Convertible Notes (Tables)
 9 Months Ended
Sep. 30, 2022
Debt Disclosure [Abstract]  
Schedule of convertible notes
The Company’s convertible notes are shown in the following table:
As of
(In thousands)September 30, 2022December 31, 2021
2023 Notes$10,381 $172,500 
Unamortized discount — 2023 Notes (1)
— (8,266)
Unamortized debt issuance costs — 2023 Notes(13)(547)
Total convertible notes10,368 163,687 
Less current portion10,368 163,687 
Total long-term convertible notes$— $— 
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(1)    On January 1, 2022, the Company adopted ASU No. 2020-06. Refer to Note 2, “Recent Accounting Pronouncements,” for additional information.
Schedule of interest expense on notes
Interest expense related to the convertible notes for the three and nine months ended September 30, 2022 and 2021 was as follows:
Three Months EndedNine Months Ended
 September 30,September 30,
(In thousands)2022202120222021
2023 Notes coupon interest at a rate of 1.375%
$90 $593 $575 $1,779 
2023 Notes amortization of discount and debt issuance cost33 1,927 184 5,702 
Total interest expense on convertible notes$123 $2,520 $759 $7,481