Debt (Tables)

6 Months Ended

Jun. 30, 2021

Debt

Schedule of outstanding Convertible Notes

	June 30,
	2021
	(in thousands)
Long-Term Debt
Outstanding Principal	$	287,500
Unamortized debt discount and issuance cost		(7,723)
Net carrying amount	$	279,777

Summary of interest expense

	Three months ended		Six months ended
	June 30,		June 30,
	2021		2021
	(in thousands)
Cash interest expense
Contractual interest expense	$	1,617	$	3,234
Non-cash interest expense
Amortization of debt discount and debt issuance cost		306		610
Total interest expense	$	1,923	$	3,844