Cash, Cash Equivalents and Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2015

Investments in Marketable Securities

Investments in marketable securities consisted of the following at September 30, 2015 (in thousands):

	September 30, 2015
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Marketable securities:
U.S. Government and agency securities	$	11,053	$	4	$	—		$	11,057
Corporate and other debt securities		9,729		5		(1	)		9,733
		20,782		9		(1	)		20,790
Long-term marketable securities:
U.S. Government and agency securities		1,649		2		—			1,651
Corporate and other debt securities		—		—		—			—
		1,649		2		—			1,651
Total	$	22,431	$	11	$	(1	)	$	22,441

Investments in marketable securities consisted of the following at December 31, 2014 (in thousands):

	December 31, 2014
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Marketable securities:
U.S. Government and agency securities	$	12,716	$	2	$	(2	)	$	12,716
Corporate and other debt securities		10,373		4		(3	)		10,374
		23,089		6		(5	)		23,090
Long-term marketable securities:
U.S. Government and agency securities		1,228		—		—			1,228
Corporate and other debt securities		2,326		—		(4	)		2,322
		3,554		—		(4	)		3,550
Total	$	26,643	$	6	$	(9	)	$	26,640

Contractual Maturities of Marketable Securities

The contractual maturities of marketable securities at September 30, 2015 were as follows (in thousands):

	Amortized Cost		Fair Value
Due in 1 year or less	$	20,782	$	20,790
Due in 1 to 2 years		1,649		1,651
	$	22,431	$	22,441