Debt (Tables)

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Schedule of Carrying Value of Debt

The carrying value of debt was as follows (in thousands):

	September 30,		December 31,
	2021		2020
Convertible senior notes	$	230,000	$	230,000
Revolving credit facility		—		30,000
Total debt		230,000		260,000
Less: unamortized debt discount		29,616		37,190
Less: unamortized debt issuance costs		3,588		4,548
Less: current portion of convertible senior notes, net		196,796		188,300
Less: current portion of other long-term debt		—		29,962
Long-term debt, net of current portion	$	—	$	—

Schedule of Net Carrying Value of Liability Component of Convertible Notes

The net carrying value of the liability component of the Convertible Notes was as follows (in thousands):

	September 30,		December 31,
	2021		2020
Principal	$	230,000	$	230,000
Less: unamortized debt discount		29,616		37,190
Less: unamortized debt issuance costs		3,588		4,510
Net carrying amount	$	196,796	$	188,300

Schedule of Interest Expense Related to Convertible Notes

The interest expense recognized related to the Convertible Notes was as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Contractual interest expense	$	143	$	143	$	431	$	431
Amortization of debt issuance costs and discount		2,871		2,720		8,496		8,050
Total	$	3,014	$	2,863	$	8,927	$	8,481