Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2014

Marketable Securities

Schedule of available-for-sale marketable securities and cash and cash equivalents

Available-for-sale marketable securities and cash and cash equivalents consist of the following (in thousands):

	September 30, 2014
	Amortized Cost Value		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash and cash equivalents:
Cash	$	2,135	$	—	$	—		$	2,135
Money market funds	14,331		—		—			14,331
Total	$	16,466	$	—	$	—		$	16,466
Marketable securities:
Domestic corporate debt securities	43,561		—		(13		)	43,548
Domestic corporate commercial paper	8,497		3		—			8,500
Total	$	52,058	$	3	$	(13	)	$	52,048

	December 31, 2013
	Amortized Cost Value		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Cash and cash equivalents:
Cash	$	2,710	$	—	$	—	$	2,710
Money market fund	9,593		—		—		9,593
Total	$	12,303	$	—	$	—	$	12,303