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Long-Term Debt | 12 Months Ended
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Dec. 31, 2023
Debt Disclosure [Abstract] |
Long-Term Debt | Long-Term Debt The Company had no exchangeable senior notes as of December 31, 2023. Long-term debt as of December 31, 2022 is summarized as follows:
Exchangeable Senior Notes: |  |  |  | 2022
Principal amount of 4.50% exchangeable senior notes due October 2023 |  |  |  | $ | 117,375 |
Principal amount of 4.50% exchangeable senior notes due February 2023 |  |  |  | 17,500 |
Less: unamortized debt discount and issuance costs, net |  |  |  | (5,593) |
Net carrying amount of liability component |  |  |  | 129,282 |
Less: current maturities, net of $1,019 unamortized debt discount and issuance costs |  |  |  | (37,668) |
Long-term debt |  |  |  | $ | 91,614 |
For the years ended December 31, 2023, 2022 and 2021, the total interest expense for exchangeable senior notes was $6,143, $12,342 and $9,942, respectively, with coupon interest expense of $3,347, $6,405 and $6,469 for each period, respectively, and the amortization of debt issuance costs and debt discount of $2,796, $6,052 and $1,248 for each period, respectively. February 2023 Notes On February 16, 2018, the Issuer issued $125,000 aggregate principal amount of its 4.50% exchangeable senior notes due February 2023 (the “February 2023 Notes”) in a private placement (the “Offering”) to qualified institutional buyers pursuant to Rule 144A under the Securities Act. In connection with the Offering, the Issuer granted the initial purchasers of the February 2023 Notes a 30-day option to purchase up to an additional $18,750 aggregate principal amount of the February 2023 Notes, which was fully exercised on February 16, 2018. Net proceeds received by the Company, after issuance costs and discounts, were approximately $137,560. The February 2023 Notes were the Company’s senior unsecured obligations and ranked equally in right of payment with all of the Company’s existing and future senior unsecured indebtedness and effectively junior to any of the Company’s existing and future secured indebtedness, to the extent of the value of the assets securing such indebtedness. October 2023 Notes On April 5, 2022, the Issuer completed the exchange of $117,375 of its February 2023 Notes for a new series of its October 2023 Notes (the “2022 Exchange Transaction”). The remaining $26,375 aggregate principal amount of the February 2023 Notes were not exchanged and maintained a maturity date of February 1, 2023. On November 4, 2022, the Company repurchased $8,875 of its February 2023 Notes and on the maturity date of February 1, 2023, the Company repaid, with cash on hand, the remaining $17,500 aggregate principal amount of its February 2023 Notes. The Company accounted for the October 2023 Notes as a modification to the February 2023 Notes. The Company paid $4,804 in fees to note holders of the October 2023 Notes that are amortized over the remaining term of the October 2023 Notes. The Company paid approximately $5,450 in fees to third parties that were expensed as part of the completed 2022 Exchange Transaction. Additionally, the fair value of the unseparated, embedded conversion feature increased by $5,508, which reduced the carrying amount of the convertible debt instrument as an unamortized debt discount, with a corresponding increase in additional paid-in capital. The $5,508 was amortized over the remaining term of the October 2023 Notes as a component of interest expense. Over the course of April 3 and April 4, 2023, the Issuer completed an exchange of $96,188 of its $117,375 October 2023 Notes for $106,268 of the April 2027 Notes. The remaining $21,187 aggregate principal amount of the October 2023 Notes matured on October 2, 2023. The Issuer settled, with a combination of cash and ADSs, the remaining $21,187 aggregate principal amount of the October 2023 Notes in October 2023. The aggregate amount of cash and ADSs delivered to holders for the October 2023 Notes and accrued and unpaid interest was $21,641 and 408 ADSs, respectively. April 2027 Notes The Company accounted for the exchange of the October 2023 Notes for the April 2027 Notes as an extinguishment of $96,188 of its October 2023 Notes. The Company recorded a loss on the extinguishment of $13,129 as a result of the exchange. On June 26, 2023, and in accordance with the terms of the Indenture, the Company completed the Mandatory Exchange of $106,268 of aggregate principal amount of the April 2027 Notes, which represents all of the April 2027 Notes outstanding under the Indenture. The Mandatory Exchange consideration per one thousand dollars of principal Notes exchanged consisted of 116.1846 of ADSs representing a corresponding number of the Company’s ordinary shares, nominal value $0.01 per share, plus accrued and unpaid interest thereon. The aggregate amount of ADSs and cash in respect of accrued and unpaid interest delivered to holders of Notes in the Mandatory Exchange was 12,347 ADSs and $1,470, respectively.

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