Debt (Tables)

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Schedule of outstanding debt obligations

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

	June 30, 2020		December 31, 2019
2022 Convertible Notes	$	285,137	$	277,034
Total long-term debt	285,137		277,034
Less: current maturities	—		—
Long-term debt, net of current maturities	$	285,137	$	277,034

Schedule of outstanding convertible debt

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

	2022 Convertible Notes
Liability component:
Principal	$	320,000
Less: debt discount and issuance costs, net	34,863
Net carrying amount	$	285,137
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 six months ended June 30, 2020 and 2019 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Contractual interest expense	$	2,600	$	2,600	$	5,200	$	5,267
Amortization of debt issuance costs	379		345		749		699
Amortization of debt discount	3,721		3,385		7,354		6,814
Total interest expense	$	6,700	$	6,330	$	13,303	$	12,780