Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2015

Cash and Cash Equivalents [Abstract]

Marketable Securities Classified as Available-for-Sale

Marketable securities classified as available-for-sale consisted of the following (in thousands):

	December 31, 2015
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Corporate bonds	$	25,608	$	122	$	(73	)	$	25,657
Asset-backed securities	12,424		—		(31		)	12,393
Mortgage-backed securities	4,800		2		(23		)	4,779
Government and agency securities	5,705		16		(9		)	5,712
Municipal bonds	2,470		—		(2		)	2,468
Total	$	51,007	$	140	$	(138	)	$	51,009

	December 31, 2014
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Corporate bonds	$	62,208	$	16	$	(134	)	$	62,090
Asset-backed securities	49,343		5		(38		)	49,310
Mortgage-backed securities	19,280		25		(114		)	19,191
Commercial paper	18,698		2		—			18,700
Government and agency securities	11,868		14		(4		)	11,878
Municipal bonds	3,448		3		(1		)	3,450
Total	$	164,845	$	65	$	(291	)	$	164,619

Amortized Cost and Fair Value of Marketable Securities Classified by Stated Maturity

The following table summarizes the amortized cost and fair value of the Company’s marketable securities, classified by maturity as of December 31, 2015 and 2014 (in thousands):

	December 31, 2015				December 31, 2014
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Marketable securities
Due in 1 year or less	$	17,783	$	17,870	$	46,759	$	46,754
Due in 1-2 years	15,900		15,858		53,698		53,639
Due in 2-3 years	7,959		7,934		30,558		30,505
Due in 3-4 years	2,399		2,408		11,277		11,275
Due in 4-9 years	2,844		2,843		7,280		7,275
Due in 9-20 years	1,397		1,394		1,257		1,266
Due in 20-35 years	2,725		2,702		14,016		13,905
	$	51,007	$	51,009	$	164,845	$	164,619