Debt (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Schedule of Convertible Debt

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

	DECEMBER 31,
(in thousands)	2020		2019
Gross proceeds	$	316,250	$	316,250
Unamortized debt discount	(101,565)		(122,402)
Unamortized issuance costs	(4,312)		(5,197)
Carrying value	$	210,373	$	188,651

Schedule of Interest Expense of Convertible Debt

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

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