Convertible Senior Notes (Tables)

3 Months Ended

Mar. 31, 2021

Debt Disclosure [Abstract]

Schedule of Net Carrying Amount of Liability and Equity Component of Convertible Senior Notes

As of March 31, 2021, the net carrying value of the Notes was classified as a long-term liability in the “Convertible senior notes, net” line item in the Company’s Consolidated Balance Sheet. The following is a summary of the Company’s convertible debt instruments as of March 31, 2021 (in thousands):

	Principal		Unamortized			Net Carrying		Fair Value
	Amount		Issuance Costs			Amount		Amount		Leveling
2025 Notes	$	650,000	$	(14,349	)	$	635,651	$	1,258,654	Level 2
2027 Notes		1,050,000		(23,737	)		1,026,263		877,979	Level 2
Total	$	1,700,000	$	(38,086	)	$	1,661,914	$	2,136,633

Schedule of Interest Expense Related to Notes

For the three months ended March 31, 2021, interest expense related to the Notes was as follows (in thousands):

	Contractual		Amortization of
	Interest Expense		Issuance Costs		Total
2025 Notes	$	1,219	$	739	$	1,958
2027 Notes		0		433		433
Total	$	1,219	$	1,172	$	2,391

Schedule of Future Contractual Payments of Notes

The following table shows the future contractual payments related to the Notes (semi-annual interest payments and principal upon maturity), based on the expected due dates of the various installments as of March 31, 2021 (in thousands):

Payments due by period ended March 31,	2025 Notes		2027 Notes		Total
2022	$	4,740	$	0	$	4,740
2023		4,875		0		4,875
2024		4,875		0		4,875
2025		4,875		0		4,875
2026		655,078		0		655,078
Thereafter		0		1,050,000		1,050,000
Total	$	674,443	$	1,050,000	$	1,724,443