Convertible Senior Notes (Tables)

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Schedule of Liability and Equity Components

The liability and equity components of the Notes consisted of the following (in thousands) at June 30, 2021 and December 31, 2020:

	June 30, 2021		December 31, 2020
Liability:
Principal amount	$	287,500	$	287,500
Unamortized debt issuance costs	(6,901)		(5,446)
Unamortized debt discount	—		(79,070)
Net carrying amount	$	280,599	$	202,984
Carrying amount of the equity component	$	—	$	85,803

Schedule of Interest Expense Recognized

The following table details interest expense recognized related to the Notes for the three and six months ended June 30, 2021 and 2020 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Contractual interest expense	$	1,078	$	719	$	2,156	$	719
Amortization of debt issuance costs	431		159		859		159
Amortization of debt discount	N/A		2,298		N/A		2,298
Total interest expense	$	1,509	$	3,176	$	3,015	$	3,176