Debt (Tables)

3 Months Ended

Mar. 31, 2022

Debt

Schedule of outstanding Convertible Notes

	March 31,		December 31,
	2022		2021
	(in thousands)
Long-Term Debt
Outstanding Principal	$	287,500	$	287,500
Unamortized debt discount and issuance cost		(6,794)		(7,106)
Net carrying amount	$	280,706	$	280,394

Summary of interest expense

	Three months ended
	March 31,		March 31,
	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		304
Total interest expense	$	1,929	$	1,921