Cash, Cash Equivalents and Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2016

Investments in Marketable Securities

Investments in marketable securities consisted of the following at March 31, 2016 (in thousands):

	March 31, 2016
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Marketable securities:
U.S. Government and agency securities	$	5,778	$	—	$	—		$	5,778
Corporate and other debt securities		10,700		7		(3	)		10,704
		16,478		7		(3	)		16,482
Long-term marketable securities:
U.S. Government and agency securities		417		—		—			417
Corporate and other debt securities		800		—		—			800
		1,217		—		—			1,217
Total	$	17,695	$	7	$	(3	)	$	17,699

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

Contractual Maturities of Marketable Securities

The contractual maturities of money market funds and marketable securities at March 31, 2016 were as follows:

	Amortized Cost		Fair Value
Due in 1 year or less	$	16,478	$	16,482
Due in 1 to 2 years		1,217		1,217
	$	17,695	$	17,699