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Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Debt

Debt at December 31, 2017, consisted of the following (in thousands):

		December 31, 2017
		Principal				Unamortized Discount				Net Carrying Value
Loan and Security Agreement		$	30,000			$	(202	)		$	29,798
Less: debt - current			—				—				—
Debt - non-current		$	30,000			$	(202	)		$	29,798

Debt at December 31, 2016, consisted of the following (in thousands):

		December 31, 2016
		Principal				Unamortized Discount				Total
Loan and Security Agreement		$	19,499			$	(124	)		$	19,375
Less: debt - current			(7,013	)			79				(6,934	)
Debt - non-current		$	12,486			$	(45	)		$	12,441

Expected Future Principal and Interest Payments Based on Debt Balances

Expected future principal and interest payments based on debt balances at December 31, 2017, are expected to be as follows:

Year ended December 31,		Principal				Interest				Total
2018		$	—			$	2,554				2,554
2019			7,857				2,280				10,137
2020			8,571				1,558				10,129
2021			8,572				822				9,394
2022			5,000				2,542				7,542
Total		$	30,000			$	9,756			$	39,756

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- References

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- Definition

Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation.

+ References

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- Definition

Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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