Convertible Senior Notes and Capped Call Transactions (Tables)

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Schedule of Net Carrying Amount of Liability and Equity Components of Convertible Notes

The net carrying amount of the liability and equity components of the 2025 Notes as of June 30, 2020 was as follows:

	As of
	June 30, 2020
	(in thousands)
Liability component
Principal	$	253,000
Unamortized discount	(31,138)
Unamortized issuance costs	(6,718)
Net carrying amount	$	215,144
Equity component, net of discount and issuance costs	$	30,794

Schedule of Interest Expense

The interest expense recognized related to the 2025 Notes for the three and six months ended June 30, 2020 was as follows:

	Three Months Ended		Six Months Ended
	June 30, 2020		June 30, 2020
	(in thousands)
Contractual interest expense	$	430	$	430
Amortization of debt discount	641		641
Amortization of debt issuance costs	138		138
Total	$	1,209	$	1,209