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Marketable Securities

3 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

Marketable Securities

Available-for-sale marketable securities as of March 31, 2019 and December 31, 2018 were as follows (in thousands):

			March 31, 2019
			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
U.S. Treasury securities			$	—					$	—					$	—					$	—
Government-sponsored enterprises			17,389						1						—						17,390
Corporate debt securities			64,361						5						(6)						64,360
Total			$	81,750					$	6					$	(6)					$	81,750

			December 31, 2018
			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
Corporate debt securities			$	12,738					$	—					$	(3)					$	12,735

All available-for-sale marketable securities held as of March 31, 2019 and December 31, 2018 had contractual maturities of less than one year. All of the Company's available-for-sale marketable securities in an unrealized loss position as of March 31, 2019 and December 31, 2018 were in a loss position for less than 12 months.  There were no unrealized losses at March 31, 2019 or December 31, 2018 that the Company determined to be other-than-temporary.

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- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-URI http://asc.fasb.org/subtopic&trid=2209399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-URI http://asc.fasb.org/subtopic&trid=2324412

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://asc.fasb.org/topic&trid=2196928

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 320
-URI http://asc.fasb.org/subtopic&trid=2176304

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