Debt (Tables)

6 Months Ended

Jun. 30, 2022

Debt

Schedule of outstanding Convertible Notes

	June 30,		December 31,
	2022		2021
	(in thousands)
Long-Term Debt
Outstanding Principal	$	287,500	$	287,500
Unamortized debt discount and issuance cost		(6,480)		(7,106)
Net carrying amount	$	281,020	$	280,394

Summary of interest expense

	Three months ended
	June 30,		June 30,
	2022		2021
	(in thousands)
Cash interest expense
Contractual interest expense	$	1,617	$	1,617
Non-cash interest expense
Amortization of debt discount and debt issuance cost		312		306
Total interest expense	$	1,929	$	1,923

	Six months ended
	June 30,		June 30,
	2022		2021
	(in thousands)
Cash interest expense
Contractual interest expense	$	3,234	$	3,234
Non-cash interest expense
Amortization of debt discount and debt issuance cost		625		610
Total interest expense	$	3,860	$	3,844