Cash, cash equivalents and marketable securities

3 Months Ended

Mar. 31, 2013

Cash, cash equivalents and marketable securities

Cash, cash equivalents and marketable securities

4. Cash, cash equivalents and marketable securities

The following tables summarize the Company’s cash, cash equivalents and marketable securities at March 31, 2013 and December 31, 2012 (in thousands):

As of March 31, 2013	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash and money market funds	$	43,188	$	—	$	—		$	43,188
Corporate debt securities
Due in one year or less	9,368		4		—			9,372
Due in two years or less	7,146		—		(3		)	7,143
Total	$	59,702	$	4	$	(3	)	$	59,703
Reported as:
Cash and cash equivalents	$	43,188	$	—	$	—		$	43,188
Marketable securities	16,514		4		(3		)	16,515
Total	$	59,702	$	4	$	(3	)	$	59,703

As of December 31, 2012	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Cash and money market funds	$	14,776	$	—	$	—		$	14,776
Corporate debt securities
Due in one year or less	5,754		2		(1		)	5,755
Due in two years or less	10,867		3		(10		)	10,860
Total	$	31,397	$	5	$	(11	)	$	31,391
Reported as:
Cash and cash equivalents	$	14,776	$	—	$	—		$	14,776
Marketable securities	16,621		5		(11		)	16,615
Total	$	31,397	$	5	$	(11	)	$	31,391