(2) Short-term Investments

Marketable securities, classified as available‑for‑sale, are stated at fair value. There were no other-than-temporary losses during any of the periods presented.

As of June 30, 2014, the Company’s short-term investments were $107.9 million, consisting of certificates of deposit of $3.0 million and marketable securities measured at fair value as follows (in thousands):


	June 30, 2014
	Amortized cost		Unrealized gains		Unrealized loss		Fair value
	(unaudited)
U.S. agency notes	$	22,535	$	1	$	(4)	$	22,532
Corporate bonds		43,148		2		(9)		43,141
Commercial paper		39,177		1		—		39,178
Total Marketable Securities	$	104,860	$	4	$	(13)	$	104,851

As of December 31, 2013, the Company’s short-term investments were $104.7 million, consisting of certificates of deposit of $2.0 million and marketable securities measured at fair value as follows (in thousands):


		December 31, 2013
	Amortized cost		Unrealized gains		Unrealized loss		Fair value
U.S. agency notes	$	23,298	$	1	$	(2)	$	23,297
Corporate bonds		42,766		7		(5)		42,768
Commercial paper		36,614		—		(1)		36,613
Total Marketable Securities	$	102,678	$	8	$	(8)	$	102,678

As of June 30, 2014 and December 31, 2013, there were no short-term investments with maturity dates greater than one year.