Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt

Debt at December 31, 2014, consisted of the following (in thousands):

	December 31, 2014
	Principal		Unamortized Discount			Net Carrying Value
Loan and Security Agreement	$	10,000	$	(128	)	$	9,872
Less: debt—current		0		0			0
Debt—non-current	$	10,000	$	(128	)	$	9,872

Expected Principal and Interest Payments on Debt

Principal and interest payments on debt at December 31, 2014, are expected to be as follows*:

Year ended December 31,	Principal		Interest		Total
2015	$	—	$	695	$	695
2016		2,614		613		3,227
2017		2,802		425		3,227
2018		3,003		224		3,227
2019		1,581		733		2,314
Total	$	10,000	$	2,690	$	12,690

* Unless interest only period extends to December 31, 2016, as described below.