Debt (Tables)

9 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

Schedule of outstanding debt obligations

Our outstanding debt obligations as of September 30, 2020 and December 31, 2019 consisted of the following (in thousands):

	September 30, 2020		December 31, 2019
2022 Convertible Notes	$	289,334	$	277,034
Total long-term debt	289,334		277,034
Less: current maturities	—		—
Long-term debt, net of current maturities	$	289,334	$	277,034

Schedule of outstanding convertible debt

The outstanding balance of our 2022 Convertible Notes as of September 30, 2020 consisted of the following (in thousands):

	2022 Convertible Notes
Liability component:
Principal	$	320,000
Less: debt discount and issuance costs, net	30,666
Net carrying amount	$	289,334
Gross equity component	$	72,576

Schedule of total interest expense recognized related to the convertible debt

The following table sets forth total interest expense recognized related to the Convertible Notes during the three and nine months ended September 30, 2020 and 2019 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Contractual interest expense	$	2,600	$	2,600	$	7,800	$	7,867
Amortization of debt issuance costs	388		353		1,137		1,051
Amortization of debt discount	3,810		3,466		11,164		10,281
Total interest expense	$	6,798	$	6,419	$	20,101	$	19,199