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Investments and Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of Marketable Investments

The Company’s marketable investments have been classified and accounted for as available-for-sale. The Company’s marketable investments as of June 30, 2018 were as follows (in thousands):

		June 30, 2018
		Cost				Gross Unrealized Gains				Gross Unrealized Losses				Fair Value
Certificates of deposit		$	4,156			$	1			$	0			$	4,157
U.S. treasury		989				—				—				989
U.S. agency securities and government sponsored securities		94,879				7				(16		)		94,870
Commercial paper		3,131				—				—				3,131
Corporate bonds		4,994				—				(1		)		4,993
Total		$	108,149			$	8			$	(17	)		$	108,140

Schedule of Gross Unrealized Losses and Fair Value of Marketable Investments

The following table presents the gross unrealized losses and the fair value for those marketable investments that were in an unrealized loss position as of June 30, 2018 (in thousands):

		June 30, 2018
		Less than 12 months
		Gross Unrealized Losses				Fair Value
Certificates of deposit		$	0			$	249
U.S. agency securities and government sponsored securities		(16		)		32,767
Corporate bonds		(1		)		4,993
Total		$	(17	)		$	38,009

Schedule of Assets Carried at Fair Value

The following table sets forth the Company’s assets measured at fair value by level within the fair value hierarchy (in thousands):

	June 30, 2018
	Level 1				Level 2				Level 3				Total
Assets
Cash equivalents
Commercial paper	$	—			$	500			$	—			$	500
Money market funds	75,765				—				—				75,765
Certificates of deposit	—				498				—				498
U.S. agency securities	—				35,157				—				35,157
Total cash equivalents	$	75,765			$	36,155			$	—			$	111,920
Marketable investments
Certificates of deposit	—				4,157				—				4,157
U.S. treasury	989				—				—				989
U.S. agency securities and government sponsored securities	—				94,870				—				94,870
Commercial paper	—				3,131				—				3,131
Corporate bonds	—				4,993				—				4,993
Total marketable investments	$	989			$	107,151			$	—			$	108,140
	December 31, 2017
	Level 1				Level 2				Level 3				Total
Assets
Cash equivalents
Money market funds	$	20,092			$	—			$	—			$	20,092
Other Assets
Embedded conversion option held for investment	—				—				984				984

X

- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://asc.fasb.org/topic&trid=2196928

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Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13467-108611

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-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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Tabular disclosure of unrealized gains and losses on investments.

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