Debt (Tables)

9 Months Ended

Sep. 30, 2021

Debt

Schedule of outstanding Convertible Notes

	September 30,
	2021
	(in thousands)
Long-Term Debt
Outstanding Principal	$	287,500
Unamortized debt discount and issuance cost		(7,415)
Net carrying amount	$	280,085

Summary of interest expense

	Three months ended		Nine months ended
	September 30,		September 30,
	2021		2021
	(in thousands)
Cash interest expense
Contractual interest expense	$	1,617	$	4,852
Non-cash interest expense
Amortization of debt discount and debt issuance cost		308		917
Total interest expense	$	1,925	$	5,769