Debt (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of Convertible Debt

The following table summarizes the carrying value of the Convertible Notes:

	DECEMBER 31,
(in thousands)	2021		2020
Gross proceeds	$	316,250	$	316,250
Unamortized debt discount	(78,395)		(101,565)
Unamortized issuance costs	(3,328)		(4,312)
Carrying value	$	234,527	$	210,373

Schedule of Interest Expense of Convertible Debt

The following table summarizes the interest expense recognized related to the Convertible Notes:

	DECEMBER 31,
(in thousands)	2021		2020		2019
Stated interest	$	4,744	$	4,751	$	1,476
Amortized debt discount	23,170		20,837		5,989
Amortized issuance costs	983		885		254
Interest Expense	$	28,897	$	26,473	$	7,719