Cash, Cash Equivalents and Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2016

Investments in Marketable Securities

Investments in marketable securities consisted of the following at September 30, 2016 (in thousands):

	September 30, 2016
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Marketable securities:
U.S. Government and agency securities	$	2,016	$	1	$	—		$	2,017
Corporate and other debt securities		18,966		78		(1	)		19,043
Total	$	20,982	$	79	$	(1	)	$	21,060

Investments in marketable securities consisted of the following at December 31, 2015 (in thousands):

	December 31, 2015
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Marketable securities:
U.S. Government and agency securities	$	7,029	$	—	$	(6	)	$	7,023
Corporate and other debt securities		10,659		7		(7	)		10,659
		17,688		7		(13	)		17,682
Long-term marketable securities:
U.S. Government and agency securities		838		—		(2	)		836
Corporate and other debt securities		800		—		(3	)		797
		1,638		—		(5	)		1,633
Total	$	19,326	$	7	$	(18	)	$	19,315