Convertible Senior Notes and Capped Call Transactions (Tables)

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Summary of Net Carrying Amount of Liability and Equity Components of Notes

The net carrying amount of the liability and equity components of the Notes for the periods presented is as follows:

	As of
	March 31, 2020			December 31, 2019
	(In thousands)
Liability component
Principal	$	400,000		$	400,000
Unamortized discount		(80,553	)		(84,542	)
Unamortized issuance costs		(6,070	)		(6,407	)
Net carrying amount	$	313,377		$	309,051
Equity component, net of issuance costs	$	86,764		$	86,764

Summary of Interest Expense Recognized Related to Notes

The interest expense recognized related to the Notes for the period presented is as follows:

	Three Months Ended
	March 31, 2020
	(In thousands)
Contractual interest expense	$	125
Amortization of debt discount		3,989
Amortization of debt issuance costs		337
Total	$	4,451