Convertible Senior Notes

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Convertible Senior Notes

Convertible Senior Notes

In December 2017, the Company closed a private placement of $125.0 million aggregate principal amount of convertible senior notes due 2022. In January 2018, an additional $18.8 million in notes were issued by the Company in connection with the exercise of the initial purchaser’s option. The net proceeds from the offering were approximately $139.5 million after deducting underwriting discounts and expenses. The notes are unsecured, pay interest semiannually at a rate of 5.625% per annum and are convertible at the option of the holder into shares of the Company’s common stock. The notes will mature in December 2022, unless earlier converted or repurchased in accordance with their terms. The Company does not have the right to redeem the notes prior to maturity, but may be required to repurchase the notes from holders under certain circumstances. As of December 31, 2020, the notes had a conversion rate of 50.7073 shares of common stock per $1,000 principal amount of the notes.

In October 2018, the Company closed an underwritten public offering of $131.6 million aggregate principal amount of convertible senior notes due 2023. The net proceeds from the offering were approximately $127.7 million after deducting underwriting discounts and expenses. The notes are unsecured, pay interest semiannually at a rate of 6.375% per annum and are convertible at the option of the holder into shares of the Company’s common stock. The notes will mature in October 2023, unless earlier converted or repurchased in accordance with their terms. The Company does not have the right to redeem the notes prior to maturity, but may be required to repurchase the notes from holders under certain circumstances. As of December 31, 2020, the notes had a conversion rate of 48.8496 shares of common stock per $1,000 principal amount of the notes.

The consolidated amount outstanding due on convertible senior notes as of December 31, 2020 and December 31, 2019 was $271.3 million and $269.6 million, respectively, net of deferred issuance costs.