Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2016

Investments Debt And Equity Securities [Abstract]

Schedule of Cash Equivalents and Marketable Securities

Cash equivalents and marketable securities as of June 30, 2016 consisted of the following:

	June 30, 2016
(in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Cash equivalents:
Money market funds	$	8,476	$	—	$	—		$	8,476
Corporate debt securities		2,504		—		(1	)		2,503
Total cash equivalents	$	10,980	$	—	$	(1	)	$	10,979
Marketable securities:
Commercial paper	$	20,980	$	4	$	(5	)	$	20,979
Corporate debt securities		21,200		1		(1	)		21,200
U.S. government agency securities		18,994		3		—			18,997
Total marketable securities	$	61,174	$	8	$	(6	)	$	61,176