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Fair value (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities that are measured at fair value on a recurring basis

The following tables provide our assets and liabilities that are measured at fair value on a recurring basis as of June 30, 2016 and December 31, 2015 (in thousands):

Description	Balance as of June 30, 2016				Level 1				Level 2				Level 3
Assets:
Cash and money market funds	$	95,894			$	95,894			$	—			$	—
Corporate debt securities (including commercial paper)	51,759				—				51,759				—
Total assets	$	147,653			$	95,894			$	51,759			$	—

Description	Balance as of December 31,  2015				Level 1				Level 2				Level 3
Assets:
Cash and money market funds	$	43,224			$	43,224			$	—			$	—
Corporate debt securities (including commercial paper)	83,438				—				83,438				—
Total assets	$	126,662			$	43,224			$	83,438			$	—

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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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