Debt (Tables)

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Debt

Debt at June 30, 2019, consisted of the following (in thousands):

	June 30, 2019
	Principal		Unamortized Discount			Total
Term Loan Credit Agreement	$	40,000	$	(673	)	$	39,327
Less: debt – current		—		—			—
Debt – non-current	$	40,000	$	(673	)	$	39,327

Debt at December 31, 2018, consisted of the following (in thousands):

	December 31, 2018
	Principal			Unamortized Discount			Net Carrying Value
Oxford Term Loan Agreement	$	30,000		$	(130	)	$	29,870
Less: debt – current		(7,857	)		—			(7,857	)
Debt – non-current	$	22,143		$	(130	)	$	22,013

Expected Principal, Interest and Fee Payments on Term Loan Credit Agreement

Principal, interest and fee payments on Term Loan Credit Agreement at June 30, 2019, are expected to be as follows (in thousands):

Year ended December 31,	Principal		Interest and Fees		Total
2019	$	—	$	1,648	$	1,648
2020		—		3,294		3,294
2021		—		3,285		3,285
2022		15,000		2,873		17,873
2023		20,000		1,300		21,300
2024		5,000		1,269		6,269
Total	$	40,000	$	13,669	$	53,669