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Debt (Tables)

3 Months Ended

Mar. 31, 2015

Debt at March 31, 2015, consisted of the following (in thousands):


		March 31, 2015
		Principal				Unamortized Discount				Total
Loan and Security Agreement		$	10,000			$	(117	)		$	9,883
Less: debt - current			(637	)			46				(591	)

Debt - non-current		$	9,363			$	(71	)		$	9,292

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


		December 31, 2014
		Principal				Unamortized Discount				Total
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 March 31, 2015, are expected to be as follows * (in thousands):


Year ended December 31,		Principal				Interest				Total
2015		$	0			$	522			$	522
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			$	2,517			$	12,517

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