Debt (Tables)

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Debt

Debt consisted of the following (in thousands):

	September 30, 2016
	Principal			Unamortized Discount			Total
Loan and Security Agreement	$	19,499		$	(148	)	$	19,351
Less: debt - current		(5,056	)		87			(4,969	)
Debt - non-current	$	14,443		$	(61	)	$	14,382

	December 31, 2015
	Principal			Unamortized Discount			Net Carrying Value
Loan and Security Agreement	$	20,000		$	(196	)	$	19,804
Less: debt - current		(3,050	)		94			(2,956	)
Debt - non-current	$	16,950		$	(102	)	$	16,848

Expected Principal and Interest Payments on Debt

Principal and interest payments on debt at September 30, 2016, are expected to be as follows (in thousands):

Year ended December 31,	Principal		Interest		Total
2016	$	-	$	340	$	340
2017		7,013		1,160		8,173
2018		8,178		613		8,791
2019		4,308		1,488		5,796
Total	$	19,499	$	3,601	$	23,100