Debt (Tables)

12 Months Ended

Dec. 31, 2018

Debt Disclosure [Abstract]

Convertible debt

At December 31, 2018 and December 31, 2017, the net carrying amount of the debt and the remaining unamortized debt discounts and debt issuance costs were as follows (in thousands):  

	December 31, 2018		December 31, 2017
	(Current)		(Non-current)
Face amount of the 2019 Notes (due December 2019)	$	15,702	$	143,750
Less unamortized discounts and debt issuance costs	1,291		22,773
Total net carrying value	$	14,411	$	120,977
	December 31, 2018		December 31, 2017
Face amount of the 2023 Notes (due May 2023)	$	75,090	$	—
Face amount of the Revolver Credit Facility (due December 2022)	15,000		—
Face amount of the 2023 Loan (due February 2023)	70,000		—
Total carrying value, non-current	$	160,090	$	—
Less unamortized discounts and debt issuance costs	20,519		—
Total net carrying value, non-current	$	139,571	$	—

Debt maturities schedule

Aggregate maturities of the Company’s debt are presented below (in thousands):

Year Ending December 31,
2019	$	15,702
2020	—
2021	—
2022	15,000
2023	145,090
Total	$	175,792