Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2017

Investments, Debt and Equity Securities [Abstract]

arketable securities consisted of the following as of December 31, 2017 and 2016:



December 31, 2017	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Money market mutual funds	$	7,318	$	—	$	—		$	7,318
United States treasuries	1,002		—		(1		)	1,001
Total marketable securities designated as available-for-sale	$	8,320	$	—	$	(1	)	$	8,319



December 31, 2016	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Money market mutual funds	$	21,848	$	—	$	—	$	21,848
Certificates of deposit	3,864		—		—		3,864
Total marketable securities designated as available-for-sale	$	25,712	$	—	$	—	$	25,712

Available-for-sale securities, debt maturities, amortized cost and fair value basis



December 31, 2017	Amortized Cost		Fair Value
Due in less than one year	$	1,002	$	1,001
Due after one year and within two years	—		—
	$	1,002	$	1,001
December 31, 2016	Amortized Cost		Fair Value
Due in less than one year	$	3,864	$	3,864
Due after one year and within two years	—		—
	$	3,864	$	3,864

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References + Details