Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2019

The Convertible Notes consisted of the following as of December 31, 2019:

	Amount
	(in thousands)
Liability:
Principal	$	1,265,000
Unamortized debt discount and issuance costs		(373,224	)
Net carrying amount	$	891,776
Carrying amount of the equity component	$	377,432

The following table details interest expense recognized related to the Convertible Notes for the year ended December 31, 2019:

	Amount
	(in thousands)
Contractual interest expense	$	3,723
Amortization of debt issuance costs		433
Amortization of debt discount		17,364
Total	$	21,520