Convertible Notes

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Convertible Notes

Convertible Notes

The Company’s convertible notes are shown in the following table:

	As of
(In thousands)	June 30, 2020		December 31, 2019
2023 Notes	$	172,500	$	172,500
Unamortized discount - 2023 Notes	(18,841)		(22,163)
Unamortized debt issuance costs - 2023 Notes	(1,300)		(1,549)
Total convertible notes	152,359		148,788
Less current portion	—		—
Total long-term convertible notes	$	152,359	$	148,788

Interest expense related to the notes for the three and six months ended June 30, 2020 and 2019 was as follows:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(In thousands)	2020		2019		2020		2019
2023 Notes coupon interest at a rate of 1.375%	$	593	$	593	$	1,186	$	1,186
2023 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 4.9%	1,798		1,701		3,571		3,379
Total interest expense on convertible notes	$	2,391	$	2,294	$	4,757	$	4,565