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Convertible Senior Notes, Net
12 Months Ended
Dec. 31, 2024
Debt Disclosure [Abstract]  
Convertible Senior Notes, Net

Note 10 – Convertible Senior Notes, Net

During the fourth quarter of 2018, we issued $230.0 million of the 5.375% Convertible Senior Notes due 2023 (the "2023 Notes" or "Convertible Notes"), for which we received $223.7 million after deducting the underwriting discount and offering expenses.

During the year ended December 31, 2023, we repurchased $53.9 million of aggregate principal amount of the 2023 Notes at a weighted-average price of 99.1%. These transactions happened in the open market as a result of reverse inquiries from investors with no solicitation by us. As a result of these transactions, during the year ended December 31, 2023, we recorded a gain of $0.5 million, within realized gain on extinguishment of debt in our December 31, 2023 consolidated statement of operations. The gain represents the difference between the repurchase price and the carrying amount of the 2023 Notes, net of the proportionate amount of unamortized debt issuance costs. During the fourth quarter of 2023, we repaid the remaining $176.1 million outstanding principal of the 2023 Notes in cash at par.

The aggregate contractual interest expense was approximately $8.6 million and $22.9 million for the years ended December 31, 2023 and 2022, respectively. With respect to the amortization of the discount on the liability component of the Convertible Notes as well as the amortization of deferred financing costs, we reported additional non-cash interest expense of approximately $1.2 million and $2.5 million for the year ended December 31, 2023 and 2022, respectively.