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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Measurements

Schedule of assets measured on a recurring basis at fair value

		Level 1			Level 2			Level 3			Total
		(in thousands)
December 31, 2017
Cash equivalents
Corporate debt		$	12,490		$	—		$	—		$	12,490
Total		$	12,490		$	—		$	—		$	12,490
Short-term investments
U.S. treasuries		$	33,895		$	—		$	—		$	33,895
Corporate debt		—			10,886			—			10,886
Commercial paper		—			2,999			—			2,999
Total		$	33,895		$	13,885		$	—		$	47,780
December 31, 2016
Cash equivalents
Corporate debt		$	—		$	1,501		$	—		$	1,501
Total		$	—		$	1,501		$	—		$	1,501
Short-term investments
U.S. treasuries		$	40,008		$	—		$	—		$	40,008
Government agency securities		—			10,012			—			10,012
Corporate debt		—			13,773			—			13,773
Commercial paper		—			2,994			—			2,994
Total		$	40,008		$	26,779		$	—		$	66,787

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- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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X

- References

No definition available.

+ Details

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